Capital Delivery
Project Number 80023696
Version: See BC Version
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Hazard (Put References in Column B, using
next in sequence after that in appropriate coloured cells in rows 1 to 4))
Perceived consequences Actions to be considered "Structure"/ location considered to be
At Risk,
Section A: Ground Conditions * Section B: Hazardous Environment * Section C: Existing Working Environment * Section D: Existing Services * Section E: Proximity of other structure
Assessment Stage with
reference info:Blank = not yet considered,
Otherwise insert originator's initials
and date
Use tick box if N/A
Hazard
Refs. (If
hazard N/A, tick
box)
12 November 2015
Man Trunk UIDs - SAL0018 Project Name:
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Hazard and Risk Management System (HARMS) Workbook -- Hazard Identification Checklist
Date:
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Section A.
GROUND CONDITIONS
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Running sand Trench collapse, injury Further SI, include piezometers, sheet piling All excavations
A1
1 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Unstable strata formations - excavations within made ground, water logged sands/gavels and made ground
Trench/excavation collapse, stability of structures
Properly specified and designed TBM, ground support, de-watering and application of appropriate site controls.
All excavations. High Risk - all tunnels and shafts. SAL 0018 CSO, Peel Green Road
A2
2 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Unstable slopes on the land Failure of embankments Carry out appropriate GI, properly designed permanated and temporary works to limit movements of embankments and surcharge loads imposed on new structures. Design pipe away from sludge lagoon
Tunnels S01 to S02, and S02 to S03, Shaft 01, Shaft 02, new 2m diameter sewer next to former sludge lagoon, new outfall to MSC.
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Unstable rock outcrops
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Seismic activity
A3
3 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Sub- artesian conditions identified in BHs at Shaft 01
Flooding of excavations, failure of excavations, structural failures, flotation of structures
Ground investigation, appropriate construction methods, groundwater monitoring, appropriate design of temporary and permanent works
Shaft 01, 02 and Tunnel S1 - S2
A4
4 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Potential to contaminate existing aquifer, public or private water supplies
Pollution of water supply Carry out testing of groundwater and employ appropriate methods for disposal of water arising from the works. Design GI and permanent works to prevent introduction of pathways for pollutants.
All tunnels, works within WwTW, Shaft 04 and outfall to MSC
A5
5 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Contaminated ground water Pollution of aquifer and surface watercourses including Salteye Brook and Manchester ship Canal . Contact with hazardous substances by construction operatives. Pollution risk from WwTW if contaminated groundwater disposed of through sewers.
Carry out hydrogeological investigation and employ appropriate methods for disposal of pumped water
All excavations and tunnels within areas of made ground or adjacent to/below areas of made ground in particular landfill site and former sludge lagoon
0
DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Deep or shallow mine workings Deep Mine Workings only, instability of
structuresObtain information from Coal Authority
A6
6 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Steep / Slippery Slopes Falls, including falls into deep and potential fast flowing water
Put in place a comprehensive method statements and mitigation measures such as barriers and signage
Works at Sallteye Brook crossing, MSC outfall and access to ex SAL0018 subway
0
DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Wells / air raid shelters or other voids Excavation collapse, rapid inundation of liquids
or gasesIdentify potential locations as part of desk study (Enviorcheck, site visit)
All locations
A7
7 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Asbestos Contact/inhalation by operatives Carry out appropriate GI and asbestos surveys
All excavations in made groundEx electrical installations
A8
8 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Contaminated land Contact with hazardous substances, fire or explosion,
Carry out testing of ground for contaminates. Use of robust method statements and following current guidance on dealing with contaminated land
All excavations and tunnels within areas of made ground or in close proximity to areas of made ground in particular landfill site and former sludge lagoon
A9
9 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Highly permeable ground Rapid Inundation of excavations, instability of excavations and structures. Risk of flotation
Desk top studies and on-site testing to determine permeability. Design for flotation in both temporary and permanent conditions
All shafts and tunnels; pipelines, CSO chambers
A10
10 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 23/06/15
Existing abandoned underground structures Stability of structure and surrounding ground. Existing structure may contain groundwater/sludge/pockets of gas.
Desk top studies to identify structures and available records.Trial holes. Control through method statements. Existing buried pipes to be broken out to allow construction
Abandoned 2300 and 1770x1150 sewers within WwTW. Abandoned trunk sewer in Peel Green Rd (entrance to WwTW).
A11
11 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Uncharted test piles for Barton HLB Test piles encountered by TBM below Barton HLB leading to over excavation and increased risk of ground movement. Intervention required below bridge to remove piles.
Obtain records from HA. Undertake non-intrusive SI to confirm route free of piles.Consider TH below BHLB if non-intrusive methods prove inconclusive.If piles are found then inform HA and enter into process to obtain agreement to method for pile removal.
Tunnel S3 to S4
A12
12 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Piles to bases of former o/h electricity pylon. Piles encountered by TBM leading to over excavation and increased risk of ground movement. Intervention required to remove piles.
Obtain historical records from Statutory undertakers. Undertake TH to confirm pile location sand undertake tests to confirm length of pile and whether it affects tunnel.If piles are found to affect the tunnel then agree methodology for removal with relevant authorities.
Tunnel S2 to S3 at Shaft 02 working area.
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Section B
HAZARDOUS ENVIRONMENT
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
0 Underground storage facilities0 Industrial or Manufacturing processes
B1
1 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Petrol station or fuel storage site Explosion Confirm location of fuel storage areas and petrol stations that in the event of a spillage can discharge to sewer network.
Sewer network, WwTW
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Tannery or Animal processing
B2
2 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Refuse Tipping (Industrial or Domestic) Exposure to harmful substances, sharps etc Desk study to identify formal tips and site visit to asses any fly tipping issues
WwTW due to filling and disposal of material, area to west of M60 known landfill site
B3
3 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Military Firing Range or area of WW2 bombing – Unexploded Ordnance (UXO)
Explosion Desk study to confirm risk of UXO. Non-intrusive site investigation sif considered feasible. UXO Safety awareness talks
All construction areas to west of M60 including tunnels
B4
4 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Stored chemicals in tanks Explosion, burns, inhalation of toxic fumes Obtain O&M and H&S files for site. Ensure all visitors and operatives receive site induction and follow site rules. Design new works, accesses and working areas to avoid contact with storage areas. Liaison with landowners.
Works within WwTW site. 3rd party land.
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Insulation or lagging
B5
5 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
COSHH issues Burns, skin irritation, inhalation of toxic fumes Obtain O&M and H&S files for site. Liaison with landowners.
Works within WwTW site. 3rd party land.
B6
6 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Vermin – rats / pigeons / seagulls – poisons Leptospirosis and other diseases and infections
Training and PPE. Obtaining information on known problem areas from UU Ops
Sewer networks, watercourses
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Radon
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Sources of radiation
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Sharps/Syringes
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Existing COMAH site
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Fragile roofs or skylights
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Legionella
B7
7 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Contact with live sewage, high flows, flooding and surcharge
Entrapment, explosion, fire, inhalation, disease, infection.
PPE, forced ventilation, gas tests, emergency exit. Control through method statement sand training. Provide the flow data
All existing and proposed structures. High risk - all new sewer and tunnels and ex. SAL0018 CSO and access subway
B8
8 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Discharges to or re-suspension of contamination within silt at base of MSC channel.
Toxic conditions within MSC Liaison with MSC operations team. New outfallto MSC.
B9
9 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Unauthorised discharges from UID works to sewers and WwTW treatment process
Chemical overloading of works leading to failure of treatment process or WwTW operatives coming into contact with hazardous substances
All discharges from UID works to be controlled via WwTW permit system.
All works areas.
B10
10 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Rapid changes in water pressure or flows within MSC due to operation of sluices at locks.
Differential pressures or strong currents immediately downstream of locks
Liaison with MSC operations team New outfall to MSC.
B11
11 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Exhaust gases and spray from motor vehicles, significant volumes of traffic that will be stationary during peak times. Debris thrown from vehicles
Operatives sprayed with surface water runoff from carriageway that may contain chlorides or other substances. Carbon monoxide build up from stationary traffic. Operatives struck with debris from vehicles.
Gas detection equipment in excavations. Appropriate PPE. Adequate fencing of working areas.
High risk - Shafts 01, 02 and tunnel S1 - S2. Other areas, A57 access and Peel Green Rd works.
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Section C
EXISTING WORKING ENVIRONMENT
Perceived consequences Actions to be considered "Structure"/ location considered to be
At Risk.
C1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Trade Effluent Explosion, fire, inhalation of toxic fumes, surges in flow
Obtain list of known trade effluent discharge consents
All existing and proposed structures.
C2
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Noise, ground movement and vibration from construction activities in close proximity to residential properties.
Disturbance to residents and potential for structural damage to properties.
Impose noise, ground movement and vibration limits on works. Limit night and weekend working. Impliment ground minitoring techniques. Liaison with local residents.
Shafts 01, 02 and tunnel S1 - S2; Peel Green Road Shaft
C3
3
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Restricted access to residential properties due to working areas.
Unsafe and limited access/egress for residents. Potential for injury or distress.
Provide adequate access to properties acceptable alternative parking arrangements. Ensure access/parking caters for young/old/disabled residents and are properly lit. Working areas to be adequately fenced. Provided temporary footpath diversions. Continued engagement with local residents.
Shafts 01, 02 and tunnel S1 - S2
C4
4
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Asbestos Contact/inhalation by operatives Carryout asbestos survey and removal ahead of the works
Existing electrical panels within WwTW and potentially within areas of made ground. Shaft 04 Working area and access road from A57
C5
5
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Extremes of temperature Failure of plant and equipment, adverse effects of operatives
Consider providing forced ventilation during the works and O&M
New shafts and tunnels and existing sewer network .
C6
6
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Extremes of humidity Failure of plant and equipment, adverse effects of operatives
Consider providing forced ventilation during the works and O&M
New shafts and tunnels and existing sewer network .
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Version 2.0 July 2011
Capital Delivery
C7
7
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Working adjacent/below/on motorway main carriageway and slip roads
Accidents, queuing traffic, operatives being struck by vehicles
Agreeing lane closures etc and working procedures with Highways Agency ASC. Obtain necessary approvals from HA/ASC. Consider off peak period delivery/removal. Consider access and egress points. Use approved HA TM contractor.
Shafts 01, 02 and tunnel S1 - S2
C8
8
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Working adjacent to or within 'live' carriageways
Accidents, queuing traffic, operatives being struck by vehicles or debris
Agreeing lane closures etc and working procedures with Highway Authority. Obtain necessary approvals from Highway Authority. Use approved HA TM contractor. Signage/coning to Chapter 8. Appropriate fencing of works.
A57 access works. Works within Peel Green Rd.
C9
9
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Using residential streets to access working areas. Roads designated as play streets. Significant on-street parking.
Accidents, damage to 3rd party vehicles Agreeing access route with local authority and consult with residents on access route.Engage with residents over managing on-street parking.Manage vehicle movements to working areas to avoid conflicts with construction/3rd party vehicles.Use works access of M60 slip roads for delivery of large items of plant/materials
Shaft 02 working area
C10
10
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Limited space within working areas for storage of spoil, materials, plant, vehicles etc and vehicle movements.
Accidents, injuries, unstable stockpiling of spoil or storage of materials.
Consider offsite (Eccles WwTW) storage.Maximise available working area (UU has purchased No.09 Laburnum Ave).Detailed planning of site layout, vehicle movements and construction sequence.
Shaft 01 and Shaft 02 working areas
C11
11
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Wastewater Treatment Hydraulical overloading of the works, failure of works to meet regulatory consents
Discharge pumped groundwater following quality assessments and obtain permits to discharge form UU Network and WwTW permitting teams.
All works on sewerage network and Eccles WwTW.
C12
12
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 23/06/15
Existing underground chambers and sewers Entrapment, confined space, inhalation of gases, explosions
Forced ventilation All existing underground structures.High risk - existing SAL0018 subway and CSO chamber and new shaft sand tunnels. Peel Green Road. Entrance to Eccles WwTW
C13
13
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Eccles Archery Club adjacent to northern boundary of Eccles WwTW working area. Club to remain in use throughout works
Injury from stray arrows Engagement with Eccles Archery Club.Implementation of mitigation measures, procedures and method statements to prevent injury.
Spoil bund formation area on Eccles WwTW
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Section D
Existing Services
Perceived consequences Actions to be considered "Structure"/ location considered to be
At Risk.
D1
1 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Making alterations to existing 1980mm NB brick sewer that conveys combined flows. Excavating immediately adjacent to 1980 NB sewer.
Significant flows, flooding, surcharging or collapse resulting in injury or drowning
Plan works to take into account weather conditions. Undertake internal surveys to confirm structural condition. Provide flow data
1980mm dia brick sewer, MH01, and MH02, existing SAL 0018 CSO chamber, New SAL 0018 CSO
D2
2 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Tunnelling below 1980NB brick sewer with cracks visible in soffit
Potential for new or worsening of existing structural defects leading to a potential collapse below the M60.
Design tunnel vertical and horizontal alignments to minimise risk of damage to sewer. Undertake appropriate GI. Select and design tunnelling works to minimise risk of ground settlement and subsequent damage to sewer. Undertake CCTV surveys to determine structural condition. Undertake appropriate monitoring during tunnelling works. Set allowable settlement and vibration limits.
1980mm NB brick sewer above tunnel S1 - S2
B3
3 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Traversing plant/storing spoil & materials above ex 1980NB sewer.
Potential for structural failure leading to collapse. Risk of injury, drowning, flooding, erosion of ground.
Obtain records. Undertake surveys to determine existing condition. Undertake TH to determine sewer construction (concrete surround?).Assess structural capacity. If appropriate provide protection to sewer or limit weight of plant/spoil/materials over or adjacent to sewer.Monitor condition during construction.
Shaft 01 working area.
D4
4 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Major Accident Hazard Pipelines (see in-cell comment)
Fire, explosion, disruption to services Undertake Linesearch - no MAHP within proximity of works. No further action proposed.
D3
3 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
24" steel trunk water mainConstructing shaft in immediate vicinity of main and tunnelling in close proximity and below main.Main known to be in poor condition with reported bursts in recent years.
Bursts, rapid inundation of excavations, erosion of banks of MSC, loss of service, injuries, work stoppage
Liaison with UU water networks team.Diversion/replacement of section sof main considered to be at unacceptable levels of risk.Undertake TH to confirm exact location/depth/condition.
Shaft 04 and tunnel S3 - S4.
D4
4 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
BT overhead cables Plant movements and undertaking works below cables. Striking services, disruption to services, delays
Seek undertaker's opinion and carry out diversions ahead of the works where necessary.
Shaft 01 working area and Peel Green Rd WwPS working area
D5
5 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Virgin media fibre optic cables Undertaking excavations in close proximity to cables or traversing over the cables with plant. Striking services, disruption to services, delays
Seek undertaker's opinion and carry out diversions ahead of the works where necessary.
Shaft 04/New MSC outfall. Shaft 01 working area (footpaths).
D6
6 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
High Voltage Electricity (incusing sub-stations) Fire, explosion, electrocution, disruption to services
Obtain service records. Undertake service scan as part of topo survey. Undertake THs at critical locations or at critical services. Engage the suppliers. Provide protection slab over services. Consider construction method.Identify and order diversions where required. Liaise with services undertakers.
Shaft 01 and Shaft 02 working areas, Tunnel S3 to S4.Temporary construction accesses crossing servicesSub-station immediately adjacent to Shaft02 working area and immediately above tunnel S2 - S3.Peel Green Rd working areas
D7
7 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Low Voltage Electricity Fire, explosion, electrocution, disruption to services
Seek undertaker's opinion and carry out diversions ahead of the works where necessary. Provide protection slab for services; Consider construction method
Shaft 01 , Eccles WwTW and Peel Green Road working areas
D8
8 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Low pressure gas mains Fire, explosion, disruption to services Seek undertaker's opinion and carry out diversions ahead of the works where necessary. Consider construction method
Peel Green Road working areas
D9
9 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Low pressure water mains Bursts, inundation of excavations, erosion of ground, loss of service, injuries, work stoppage
Seek undertaker's opinion and carry out diversions ahead of the works where necessary. Consider construction method
Peel Green Road working areas
D10
10 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
BT overhead cables Loss of service, work stoppage Seek undertaker's opinion and carry out diversions ahead of the works where necessary. Design pipeline to avoid telegraph poles
Peel Green Road working areas
D11
11 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
3 x 1050NB cast iron trunk water mains - THIRLMERE AQUEDUCTCrossing below aqueduct with new 1200NB ewer.
Bursts, rapid inundation of excavations, erosion of ground, flooding of homes, loss of service, injuries, work stoppage
Liaison with UU team responsible for aqueduct.Undertake TH to confirm exact location/depth/condition.Develop method statements in conjunction with UU asset team for undertaking aqueduct crossing. Consider construction method. Consider micro-tunnelling
New 1200NB sewer u/s of Eccles WwTW inlet CSO. Temporary access road to Eccles WwTW site compound.
D12
12 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Redundant 165NB cast iron Naptha main Fire, explosion Obtain records and agree methodology for removal with asset owner
Tunnel S3 to S4 and Shaft04/Outfall.
D13
13 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Motorway communications and lighting cables Fire, explosion, electrocution, disruption to services
Obtain records from HA and agree methodology for protection with asset owner. Undertake trial pits. Provide services protection slab
Access to Shaft 01 and Shaft02 working areas
D14
14 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Motorway main carriageway and slip road drainage
Inundation of working areas or excavation, flooding of highways with the potential to cause accidents
Obtain records from HA and agree methodology for protection with asset owner
Access to Shaft 01 and Shaft02 working areas, Tunnel S1 - S2, Tunnel S3 - S4 (Barton HLV low level carrier drains)
D15
15 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
UU sewers - Existing 1200 NB surface water sewer and 1000NB combined sewer.New 2000NB sewer if construction sequence results in tunnel crossing following installation
Potential for new or worsening of existing structural defects leading to a potential collapse or loss of structural integrity/watertightness. Ingress of fines into sewer leading to ground movement and potential failure of earthworks above sewers.
Design tunnel vertical and horizontal alignments to minimise risk of damage to sewers. Undertake appropriate GI. Select and design tunnelling works to minimise risk of ground settlement and subsequent damage to sewer. Undertake CCTV surveys to determine structural condition. Undertake appropriate monitoring during tunnelling works. Set allowable settlement and vibration limits.
Existing assets during tunnelled crossing below assets - Tunnel drive S2 - S3
D16
16 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
HA Assets - 2 no. 2400 x 3000 culverts - SALTEYE BROOK CULVERTS
Potential for new or worsening of existing structural defects leading to a potential collapse or loss of structural integrity/watertightness. Ingress of fines into sewer leading to ground movement and potential failure culverts or M60 embankment above sewers.
Design tunnel vertical and horizontal alignments to minimise risk of damage to culverts. Undertake appropriate GI. Select and design tunnelling works to minimise risk of ground settlement and subsequent damage to culverts. Undertake man-entry surveys to determine structural condition. Undertake appropriate monitoring during tunnelling works. Set allowable settlement and vibration limits.
Existing assets during tunnelled crossing below assets - Tunnel drive S2 - S3
D17
17 DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Service pipes and tanks Fire, explosion, disruption to services, inundation of excavations, drowning, excavation collapse
Obtain service records. Underatke service scan as part of top survey. Undertake THs at critical locations or at critical services. Identify and order diversions where required
All new pipelines, manholes, shafts, tunnels and structures
D1818 LC 31/01/13 LC 14/02/14 Existing 250mm sludge main which operates
at pressures up to 25 barsDamage from construction plant and vehicles for proposed temporary car park
Provide protection at crossing points and below temporary car park
Eccles WwTW temporary access road; 2m diameter pipeline; temporary car park
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Ductwork e.g. Air conditioning or ventilation)
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Cathodic Protection
19 LC 31/01/13 LC 14/02/14 Existing 980x900 Brick Sewer Collapse of structure Undertake trial pits to confirm cover depth and sewer details
Peel Green Road working areas
Ref
Des
k S
tudy
Site
vis
it
Des
ign
Section E
PROXIMITY TO OTHER STRUCTURE(S)
potentially affected by the works
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Pipe bridges and supports
E1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
ZM
06/09/2012
LC 14/02/14
Residential buildings in close proximity to large plan area, deep excavations.
Ground movement or vibration resulting in instability, structural defects, partial or full structural failure
Undertake pre- and post- construction structural assessments as appropriate. Undertake GI and other SI to obtain relevant information to be able to design and undertake works in a manner to minimise vibration and ground movement. Avoid structures by design if possible. Provide sufficient working space around structures to avoid impact damage or undermining. Undertake appropriate monitoring during the works. Set allowable settlement and vibration limits.
Residential properties at the Shaft 01, Shaft 02 and Peel Green Road working areas.
C
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Version 2.0 July 2011
Capital Delivery
E2
2
DRS
29/10/13
LC
31/01/13
ZM
06/09/2012
LC 14/02/14
Pre-fabricated garages, garden walls in close proximity to deep excavations or located above tunnelling works.
Ground movement or vibration resulting in instability, structural defects, partial or full structural failure
Undertake pre- and post- construction structural assessments as appropriate. Undertake GI and other SI to obtain relevant information to be able to design and undertake works in a manner to minimise vibration and ground movement. Avoid structures by design if possible. Provide sufficient working space around structures to avoid impact damage or undermining. Undertake appropriate monitoring during the works. Set allowable settlement and vibration limits.
Garden walls to residential properties in close proximity to the Shaft 01, Shaft 02 and Peel Green Rd working areas and garages above the line of the tunnel S2 - S3
E2
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Shaft construction and tunnelling affecting M60 Embankment, M60 JN11 Bridge abutments, M60 Jn11 slip road retaining walls, Salteye Brook access points retaining walls
Ground movement or vibration resulting in instability, structural defects, partial or full structural failure
Undertake pre- and post- construction structural assessments as appropriate. Undertake GI and other SI to obtain relevant information to be able to design and undertake works in a manner to minimise vibration and ground movement. Avoid structures by design if possible. Provide sufficient working space around structures to avoid impact damage or undermining. Undertake appropriate monitoring during the works. Set allowable settlement and vibration limits.Follow HA DMRB procedures for managing geotechnical risks and obtain AIP from HA for works affecting these HA assets prior to works commencing.
M60 Embankment, M60 JN11 Bridge abutments, M60 Jn11 slip road retaining walls, Salteye Brook access points retaining walls. Tunnel S1 - S2 and S2 - S3
E2
2
DRS
01/11/2011
LC 31/01/13 ZM
06/09/2012
LC 14/02/14
Tunnelling affecting M60 Barton High Level Bridge
Ground movement or vibration resulting in instability, structural defects, partial or full structural failure
Undertake pre- and post- construction structural assessments as appropriate. Undertake GI and other SI to obtain relevant information to be able to design and undertake shaft construction and tunnelling works in a manner to minimise vibration and ground movement. Avoid affecting structures by design if possible. Provide sufficient working space around structures to avoid impact damage or undermining. Undertake appropriate monitoring during the works. Set allowable settlement and vibration limits.Follow HA DMRB procedures for managing geotechnical risks and obtain AIP from HA for works affecting these HA assets prior to works commencing.
M60 Barton High Level Bridge - Tunnel S3 - S4
E2
2
DRS
01/11/2011
LC 31/01/13 ZM
06/09/2012
LC 14/02/14
UU asset - 3300 x 2180 storm water box culvert founded on piles. Tunnel crossing below culvert.
Piled foundation within S2 - S3 tunnel alignment. Piles will prevent progress of tunnelling requiring surface intervention. Inevitable damage to culvert.Storm flows within culvert may result in rapid inundation of excavations or working areas if flows not dealt with effectively during pile removal. Inadequate measures to deal with flows will result in severe flooding from the sewer network upstream of the Eccles WwTW Inlet CSO.
Undertake site investigation to determine, location, size and length of piles. Remove piles prior to tunnel commencing. Install suitable measures to deal with flows during pile removal.
3300 x 2180 r.c. storm water box culvert in Eccles WwTW.
E3
3
DRS
29/10/13
LC 31/01/13 ZM
06/09/2012
LC 14/02/14
UU asset - 3300 x 2180 storm water box culvert founded on piles. Removal of section to form new surcharge relief chamber
Section of culvert requires removal to form new chamber.Storm flows within culvert may result in rapid inundation of excavations or working areas if flows not dealt with effectively during pile removal. Inadequate measures to deal with flows will result in severe flooding from the sewer network upstream of the Eccles WwTW Inlet CSO.
Obtain record information for structure. Undertake surveys to confirm condition of culvert. Install suitable measures to deal with flows during culvert removal.
3300 x 2180 r.c. storm water box culvert in Eccles WwTW.
E4
4
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
UU assets - 1240 x 1240 final effluent culvert and 3000 x 2000 storm water box culvert located within working area for Shaft 03.
Structural capacity of culverts unknown. Area above the culverts potentially subject to plant movements, material storage, spoil treatment and stockpiling. Potential for structural failure/collapse leading to rapid inundation of excavations or working areas and severe flooding from the sewer network upstream of the Eccles WwTW Inlet CSO.
Obtain record information for structures. Undertake surveys to confirm condition of culverts, wall thickness rebar etc. Determine structural capacity of culverts. Limit plant movements, storage and stockpiling to suit structural capacity.
1240 x 1240 final effluent culvert and 3000 x 2000 r.c. storm water box culvert in Eccles WwTW.
E5
5
DRS
01/11/2011
LC 31/01/13 ZM
06/09/2012
LC 14/02/14
UU asset - 1240 x 1240 final effluent box culvert. Removal of section to form new chamber
Section of culvert requires removal to form new chamber.Continuous final effluent flows within culvert may result in rapid inundation of excavations or working areas if flows not dealt with effectively during removal of culvert. Inadequate measures to deal with flows will result in failure of the treatment process and potential for flooding of the WwTW.
Obtain record information for structure. Undertake surveys to confirm condition of culvert. Install suitable measures to deal with flows during culvert removal.
1240 x 1240 r.c. final effluent box culvert in Eccles WwTW.
E6
6
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
UU asset - 1240 x 1240 FE and 3 x 2 storm water box culvert founded on piles. Tunnel S2 - S3 crossing below culvert
Tunnelling below will result in ground movement or vibration potentially resulting in instability, structural defects, partial or full structural failure.Continuous final effluent flows within culvert may result in rapid inundation of excavations or working areas if flows not constrained within culvert due to structural failure. Inadequate measures to deal with flows will result in failure of the treatment process and potential for flooding of the WwTW. Flows escaping from culvert may result in erosion of ground above tunnel.
Obtain record information for structure. Undertake surveys to confirm condition of culverts, wall thickness rebar etc. Determine structural capacity of culverts and ability to resist ground movement. Install appropriate support during tunnelling to maintain integrity of culvert during tunnelling.
1240 x 1240 r.c. final effluent box culvert and 3 x 2 storm culvert in Eccles WwTW.
E7
7
DRS
01/11/2011
LC 31/01/13 ZM
06/09/2012
LC 14/02/14
FTFT culvert below main access road (linking inlet channel to primary settlement tanks).
Structural capacity of culverts unknown. If main access is used for alternative construction access then structural failure may occur is structural capacity of culvert is exceeded. Failure of culvert would lead to flooding, injury.
Obtain record information for structure. Confirm structural capacity prior to use as a construction access route.
Alternative construction access (along main WwTW access road) to Shaft 03.
E8
8
DRS
01/11/2011
LC 31/01/13 ZM
06/09/2012
LC 14/02/14
Eccles WwTW - Ex Filter beds (northern bank) and final settlement tanks - deep excavations for pipelines and shafts in close proximity to these structures.
Failure of excavation support or impact from construction plant may result in structural damage or damage/entanglement to mechanical equipment. Damage may result in failure of treatment process, flooding, injury.
Obtain record information for structures. Design and implement robust ground support to excavations. Install adequate fencing to working area boundaries.
Eccles WwTW - Ex Filter beds (northern bank) and final settlement tanks
E9
9
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Tunnelling in close proximity to Salford City Community Stadium - South Stand
Ground movement or vibration resulting in instability, structural defects, partial or full structural failure.Note: South stand founded on ground bearing slab. Only north stand is founded on piles.
Obtain records. Undertake pre- and post- construction structural assessments as appropriate. Undertake GI and other SI to obtain relevant information to be able to design and undertake tunnelling works in a manner to minimise vibration and ground movement. Avoid affecting structures by design if possible. Provide sufficient working space around structures to avoid impact damage or undermining and provide sufficient space in case surface intervention to TBM is required. Undertake appropriate monitoring during the works. Set allowable settlement and vibration limits.
Salford City Community Stadium - South Stand
E10
10
DRS
01/11/2011
LC 31/01/13 ZM
06/09/2012
LC 14/02/14
Tunnelling in close proximity to Barton Locks Ground movement or vibration resulting in instability, structural defects, partial or full structural failure.
Obtain records. Undertake pre- and post- construction structural assessments as appropriate. Undertake GI and other SI to obtain relevant information to be able to design and undertake shaft construction and tunnelling works in a manner to minimise vibration and ground movement. Avoid affecting structures by design if possible. Provide sufficient working space around structures to avoid impact damage or undermining and provide sufficient space in case surface intervention to TBM is required. Undertake appropriate monitoring during the works. Set allowable settlement and vibration limits.
Barton Locks
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Version 2.0 July 2011
Capital Delivery
E11
11
DRS
01/11/2011
LC 31/01/13 ZM
06/09/2012
LC 14/02/14
Tunnelling in close proximity ex. Salteye Brook Outfall Structure. Traversing plant across Salteye Brook Outfall Structure. (note the outfall structure forms a bridge across the brook).
Ground movement or vibration resulting in instability, structural defects, partial or full structural failure.Instability, structural defects, partial or full structural failure resulting from exceeding safe weight limit for vehicles crossing the bridge.Failure of assets fixed to or laid across bridge - 24" trunk water main and Virgin Media cables (see Services section above)
Obtain records. Undertake pre- and post- construction structural assessments as appropriate. Undertake GI and other SI to obtain relevant information to be able to design and undertake tunnelling works in a manner to minimise vibration and ground movement. Avoid affecting structures by design if possible. Provide sufficient working space around structures to avoid impact damage or undermining and provide sufficient space in case surface intervention to TBM is required. Undertake appropriate monitoring during the works. Set allowable settlement and vibration limits.Obtain SWL of bridge from MSC Operations Team. If this information is not available then undertake assessment of SWL of bridge. Where appropriate, instigate procedures to limit weight of vehicles crossing bridge.
Salteye Brook Outfall structure and associated services.
E12
12
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Tunnelling in close proximity to earth bank of MSC . Shaft and outfall construction next to and within the bank of the MSC .
Ground movement or vibration resulting in instability, defects, partial or full slope failure.Failure of assets fixed to or laid across bridge - 24" trunk water main and Virgin Media cables (see Services section above)
Obtain records. Undertake pre- and post- construction condition assessments as appropriate. Undertake GI and other SI to obtain relevant information to be able to design and undertake shaft construction, tunnelling works, outfall wall and outfall channel formation in a manner to minimise vibration and ground movement. Avoid affecting structures by design if possible. Provide sufficient working space around structures to avoid impact damage or undermining and provide sufficient space in case surface intervention to TBM is required. Undertake appropriate monitoring during the works. Set allowable settlement and vibration limits.
Banks of MSC
0
DRS
01/11/2011Is structure a Workplace? No No further action proposed unless design
changes to incorporate workplaces
0
LC
12/11/2015Construction adjacent to existing 1980 brick sewer
Possibilty of ground settlements and damage to existing brick sewer
Review the temporary works required for tconstruction of the CSO
SAL 0018 CSO
Ref
Des
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Site
vi
sit
Des
ign Section F
WORKING NEAR BODY OF WATERPerceived consequences Actions to be considered "Structure"/ location considered to be
At Risk.
F1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
History of flooding from watercourses and potential flooding from MSC
Inundation, injury, drowning. Implications on flotation of pipelines and structures. Pollution and contamination of floodwaters by construction materials, fuels etc.
Obtain flood risk data from EA. Include data in PCI and design criteria
All working areas and structures within defined floodplain
F2
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
History of flooding from sewer network Inundation, injury, drowning. Implications on flotation of pipelines and structures. Disease/infection from sewage contaminated floodwater
Obtain flooding records. Obtain flooding and surcharge data from UU network modelling team. Include data in PCI, SSB and design criteria.Provide data on flood defences (Note Peel Green Rd DG5 properties protected by earth flood bund and NRV).
Properties on DG5 register on Peel Green Road.
F3
3
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Watercourses, reservoirs, rivers, canals, lakes, lagoons
Injury, drowning. Inundation of excavations. Unstable excavations. Rapid variations in water table.
Avoid working immediately adjacent to, or within, water bodies. Provide adequate space within working areas next to water bodies. Provide information on water bodies within PCI. Avoid works that will affect stability of banks or retaining structures. If this is not practicable ensure works do not adversely affect stability of banks or retaining structures.Monitor weather and water levels on a regular basis.Provide appropriate rescue and working apparatus.
MSC - tunnelling, shaft and outfall constructionSalteye Brook - tunnel constructionFormer sludge lagoon - excavations at toe of bund and surveying
F4
4
LC 31/01/13 LC 14/02/14 Strong underwater currents and differential pressures
Injury, drowning. Strong currents may be present downstream of Barton Locks due to operation of locks and sluices and flows entering MSC from Salteye Brook.Differential pressures may be present downstream of Barton Locks due to operation of locks and sluices
Engagement with MSC Operations Team.Monitor weather and water levels.Monitor operation of locks and sluices
Tunnel crossing of Salteye BrookFormation of outfall to MSC (diving operations)
F55
LC 31/01/13 LC 14/02/14 Open storage tanks Falls into tanks, injury, drowning Provide info in PCI and design working areas to avoid open tanks. Provide adequate fencing to working areas adjacent to tanks.
Final tanks and storm tanks
Ref
Des
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Site
vis
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Des
ign Section G
Sequence of Construction
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
G1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Removal of existing 3300x2200 culvert and supporting piles to allow tunnel S2 - S3 to be constructed. Measures for dealing with storm flows must be in place.Culvert cannot be abandoned until flows can be turned into outfall tunnel.
Inundation of excavations, existing WwTW and flooding upstream.Injury, drowning.TBM becoming 'stuck' if piles not removed potentially resulting in over-excavation and settlement/collapse of culvert structure above.Unplanned surface intervention required to remove piles.
Temporary diversions, construction of d/s sections of new outfall first. Constraint in SSB
WwtW and upstream properties
G2
2
DRS
01/11/2011
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Restricted working space at Shaft 01 working area - insufficient space to construct shaft and CSO/pipework concurrently
Injury due to confined working area, damage to adjacent properties or M'way slip road.
Programme the work sto take into account restricted working area.
New SAL0018 CSO structure and Shaft 01
G3
3
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Connections of existing sewer network to new sewers, pipelines, shaft sand tunnels
Flooding, injury, drowning and pollution. SAL0018 CSO - flows at new SAL008 shall not be able to discharge to new tunnels and shafts until all tunnels and shafts complete.Eccles WwTW - storm and final effluent flows shall not be able to discharge to new tunnels and shafts until all tunnels and shafts complete.Peel Green Rd (1200NB) - flows shall not be able to discharge to new pipework until all downstream, pipework, tunnels and shafts complete.Peel Green Rd WwPS - discharge bellmouths set at design levels. Connection of discharge pipework to ex sewers shall not be made until all downstream, pipework, tunnels and shafts complete.
All new assets.WwTWUpstream properties
G4
4
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Installation of new screens Increase in water levels leading to flooding, injury drowning.Damage to new screensPollution
New SAL0018 - flows can only be turned into new chamber (c/w new screens) once all outfall tunnels etc that convey spill flows are completed Ex WwTW Inlet CSO - screens can only be installed once all downstream pipelines, culverts, shafts, tunnels, etc are completed.
New SAL0018Eccles WwTW Inlet CSO
G5
5
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Formation of outfall channel and connection of new outfall tunnel to MSC.
Rapid inundation, injury drowning. Upstream flooding. Pollution.
All tunnelling works and shaft fit shall be completed prior to forming connection to MSC. Shaft 04 stop gates shall be fully tested and commissioned prior to forming connection to MSC.
All new tunnels and shafts.Upstream properties and WwTW
G6
6
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Access off M60 JN11 roundabout not available until all WGIS JN11 improvement works have been completed.
Increased risk of collisions, injury without roundabout improvements.
Programme works to take into account completion date for WGIS Jn11 works.
Shaft 01 working area
Ref
Des
k S
tudy
Site
vis
it
Des
ign Section H
Access
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
H1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Rights of Way Conflict with PROW users resulting in injury. If practicable use alternative routes/working areas avoiding PROW.Provide PROW diversion.Manage interface between vehicles and PROW users.
Shaft 04/Outfall access.
H2
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Common access - Shaft 01 Alleyway Collision with pedestrians or residents using alley for pedestrian or vehicular access. Injury or damage to property/vehicles.
Provide more suitable alternative access.Limit number of construction vehicles using access.Instigate vehicle control measures as appropriate.
Access to Shaft 01 working area
H3
3
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Common access - Shaft 04 access Access may be shared with MSC operatives accessing Barton Locks and 3rd party contractors engaged in Port Salford development.Collision, injury.
Liaise with MSC operations team.Liaise with Port Salford development team and contractors.Instigate vehicle control measures as appropriate.
Shaft 04/Outfall access.
H4
4
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Common access - Eccles WwTW Access shared with UU operatives and staff with increased risk of collision, injury.Crossing of existing culverts and structures with WwTW - possible weight restrictions (see Adjacent Structures section above).
Liaise with WwTW management.Instigate vehicle control measures as appropriate.
Eccles WwTW
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Version 2.0 July 2011
Capital Delivery
H5
5
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Access limiting conditions - Shaft 01 working area.
Residential roads/alleyway not suitable for construction access.Collision, injury, damage to roads and 3rd party property.Alleyway not suitable for large maintenance access vehicles (ie Disab).
Agree access of M60 slip road, Jn11 roundabout and egress to A57 with HA/BBMM (ASC)/SCC/UV.Comply with requirements of 3rd parties. Develop construction traffic routing/management plansDevelop and implement proposals for safely diverting or managing pedestrians at interfaces with construction traffic
Shaft 01 working area
H6
6
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Access limiting conditions - Shaft 02 working area.
Residential roads linking Peel Green Rd and Liverpool Rd with the working area are relatively narrow with restricted turning space at junctions. Significant on-street parking and roads designated as 'Play Streets'.Risk of collision, injury, damage to roads and 3rd party property.Deliveries of large items of plant/materials will not be feasible through the residential streets
Autotrack plant movements around streets to confirm whether access possible. Consider access of M60 slip road or through WwTW for construction accessInstigate appropriate construction vehicle management/routing plans.
Shaft 02 working area
H7
7
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 23/06/15
Exceptional loads. Some plant required to construct the works may be considered to be exceptional (eg cranes, TBM etc).Some materials required for the works may be considered to be exceptional (eg shaft roof slabs).Access through the residential streets serving the working areas will be feasible.Risk of collision, injury, damage to roads and 3rd party property.
Select/design plant and design works to take into account restricted access.Identify alternative access to working areas for exceptional items (eg M60 slip roads). Consider precast panels for the CSO roof slab
Shaft 01 and Shaft 02 working areas. Salteye Brook Culverts. SAL0018 CSO
H8
8
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Poor sight lines Increased risk of accidents, injuries. Design site access to provide adequate sight lines.Engage specialist highways/traffic engineering consultants in the design of accessesLiaise with local highway authority and comply with their requirementsConsider whether risk can be mitigated through traffic management measures.
Shaft 01 working area (M60 JN11) and Shaft 04 working area (A57) accesses.
H9
9
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Permanent or temporary lifting arrangements / hooks etc.
Insufficient space for plant required for pump removal.Insufficient space for plant required for man rider basket use.Insufficient space for maintenance vehicles to manoeuvre.Unsuitable surfaces for setting up lifting equipment.Risk of collision, injury, damage to roads and 3rd party property. Unable to maintain assets regularly and safely.
Determine weights of pumps, screens, stop gates, man riding baskets, valves etc and confirm craneage requirements. Determine whether mobile cranes etc can access assets - Autotrack vehiclesConfirm with UU Ops lifting requirements. Consider man access requirements and whether 2 no. man rider access is required.Consider planning implications for access arrangements.
Shaft 01, Shaft 02, Shaft 03, Surcharge relief chamber (WwTW), Eccles Inlet CSO, New SAL0018, Peel Gn Rd WwPS, Shaft 04/MSC outfall
H10
10
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Traffic flows and speed - M60 Shaft 01/Shaft 02 working areas sited next to M60 JN11.Access to working areas required off M60 Slip roads.Tunnelling under M60 will require monitoring of carriageway settlement and access to assets with access points on slip roadsAccess to M60 may only be possible during nightimeRisk of collisions, accidents, injuries.
Consultation with HA/BBMM re access off slip roads and access to M60 for surveying. Comply with HA/BBMM requirements and obtain necessary approvals.Appropriate traffic management and use of Sch 12 TM contractors for TM on M60.
Shaft 01 and Shaft 02 working areas
H11
11
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Traffic flows and speed - A57 (Barton) Shaft 04 access off 50mph limit dual carriageway is existing access to Barton Locks.Construction vehicles slowing down to enter access and slow vehicles turning out of access onto carriageway. No dedicated lanes for speeding up/slowing down.Restricted sight lines.Risk of collision, injury.
Consultation with highway authority. Comply with highway authority requirements and obtain necessary approvals.Use of appropriate traffic management.Obtain temporary order to restrict speed limit on road.Undertake improvements to access and improve sight lines.
Shaft 04 working area access
H12
12
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Parking facilities or restrictions Limited available parking space for construction operatives vehicles within working areas or on adjacent residential streets.Parking vehicles may reduce visibility, access etc with an increase risk of collision, injury or damage to 3rd party property.
Impose no parking restrictions on operatives vehicles within residential streetsProvide adequate parking at main WwTW compoundInvestigate 'bussing' operatives to satellite work areas from main WwTW site compound
WwtW, Shaft 01, Shaft 02, Peel Green Rd
H13
13
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Restricted access to Residential Properties Residents unable to access properties on foot or with wheelchairs etc.Residents unable to access properties to park vehicles etcResidents unable to access properties to undertake maintenance, refuse removal etcEmergency services unable to access residential properties.Risks of injury, accidents, public health issues, damage to 3rd party property.
Design working areas maintain pedestrian and vehicular access to front and rear of properties.Where this is not practicable maintain pedestrian access and make appropriate alternative arrangements for parking and refuse collections.Liaise with residents to understand their requirements (disabilities, elderly, young children etc).Ensure access is suitable (ie for disabled, push chairs etc).
Shaft 01, Shaft 02, Peel Green Rd
0
DRS
29/10/13Access into filters requires removal of edge protection
0 Dimensional Restrictions
Ref
Des
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Site
vis
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Des
ign
Section J
Interfaces
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
0
DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Are special arrangements needed for the removal / control of livestock
J1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Events:Rugby matches at Salford City StadiumFootball matches and other events at Etihad Stadium and Old TraffordEvents at MENChristmas shopping at Trafford Centre
Significant increase in pedestrian and vehicle flows.Embargoes imposed on closures or roadworks on M60 and A57.Increase in on-street parking.Increased risk of accidents, injuries, delays to construction vehicles accessing the sites.Access arrangements to sites may not be available.
Obtain details of events and embargoes from relevant authorities/organisations.Ensure working areas adequately fenced/secure.
All working areas.
J2
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Operation & Maintenance of existing assets Restricting on-going UU Ops activities on WwTW resulting in failure of equipment and failing to meet WQ standards. Increased risk of flooding and pollution.Restricting access for UU Operations to existing sewer network for maintenance/inspection resulting in increased risk of flooding and pollution.Restricting access for MSC operatives to Barton Locks resulting in disruption to shipping and increased risk of floodingRestricting access for motorway maintenance operatives resulting in failure of communication/lighting systems with associated increased risk of accidents.
Liaise with affected 3rd parties to understand requirements.Design working areas to allow access.Include for access provision with contract documents.
Eccles WwTW, M60 and local road network, existing sewer network, Barton Locks
J3
3
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Inter-dependence with others Access to working Shaft 01 working area will not be available until M60 JN11 WGIS works are complete. Possible delays to works.
Liaison with WGIS contractor and highways authority.
Shaft 01 working area
J4
4
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13Inter-dependence with others Diversion of services in order to construct
works.Liaison with statutory undertakers Shaft 01 working area, Shaft 04 working area
and Peel Green Rd
J5
5
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13Neighbouring properties Residential properties immediately adjacent to
Shaft 01, Shaft 02 and Peel Gn Rd working areas. Properties are at risk of noise, dust, vibration, ground movement, night-time working, impact from plant, restricted access and restricted parking.Refer to other specific items covering these hazards.
Refer to other specific items covering these hazards.
Shaft 01, Shaft 02 and Peel Green Rd working areas
J6
6
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Works Authorisations / Isolation interfaces / restricted operations - WwTW FE
Flows in FE culvert can be temporarily stopped using storm tanks and re-circ PS. This facility may be required to undertake works on FE culvert. If not controlled by UU Ops then there is a risk of the failure of the treatment process, increased risk of flooding, risk of pollution and risk of inundation of excavations.
Agree procedure with UU Ops and include in SSB
Eccles WwTW FE culvert
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Version 2.0 July 2011
Capital Delivery
J7
7
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Works Authorisations / Isolation interfaces / restricted operations - access to sewerage network
UU procedure for accessing UU assets should be followed with authorisations signed off by relevant UU Ops representative. Failure to following procedure could lead to injury, drowning, electrocution, entanglement in mech plant.
Agree procedure with UU Ops and include in SSB
Eccles WwTW and all sewer network assets
J8
8
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Other Contracts: Potentially other contracts on going in close proximity:Peel Holdings - WGIS road west of WwTW boundary and at JN11 M60 Peel Holdings/Salford development of site to west of M60 Highways Agency - M60 Managed M'way Service diversion contracts for the UID scheme, Port Salford and WGIS
All will involve works being undertaken concurrently, and in close proximity to the UID scheme works. Increased risk of injuries or damage to works due to loading or impacts from 3rd party construction plant.
Liaison with 3rd parties.Effective programming where possible to avoid conflict with other schemesInclude constraints within SSB
WwTW, Shaft 01 working area, tunnel S3 - S4, Shaft 04/Outfall, new 2000NB sewer below WGIS rd
J9
9
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Aeroplanes or flight paths Barton aerodrome to west of site - all sites potentially on flight path.Risk of planes/helicopters colliding with jibs on cranes.
Liaison with Aerodrome re any specific requirements or restrictions.Under Civil Aviation law, companies and contractors who need to operate cranes and lifting equipment within 6 km of an aerodrome boundary, at heights of more than 10 metres above ground level (AGL) or that of surrounding structures or trees, if higher, must receive prior permission from the aerodrome operator.
All work areas.
DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Network Rail
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Chemical deliveries once weekly
J10
10
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Delivery of materials to site; lack of turning space
Limited space at SAL0018 and Rooke St - accidents, injury damage to property
Design, where possible to allow deliveries to enter and exit sites without turning. If turning required make sure there is sufficient space for safe turning.
SAL0018, Rooke St
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Smoking Pursue purchase of No 9 Laburnum Road
Ref
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Site
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Des
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Section K
CONFINED SPACE WORKING
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
K1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Existing confined spaces? Entrapment, suffocation, explosions, fire,
drowning
provide exiting means during an emergency,
ventilation, adequate lighting and PPE
Existing incoming 1980mm brick barrel sewer,
spill structure and CSO chamber
Ex sewers and chambers on WwTW and within
Peel Green Rd
Internal column access in piers on Barton HLB
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRG
29/10/13
LC 14/02/14
LC
12/10/2015
Are there proposed confined spaces? Entrapment, suffocation, explosions, fire,
drowning
Design out where possible.
Provide access ladders, intermediate landing,
signage, grilles, safety chains, handrailing as
per UU signature Designs and Standards
Undertake HAZOPs for all new assets and
alterations to ex assets
Prepare maintenance strategy f
New shafts, tunnels, manholes , sewers, CSO
chambers. New 1800 sleeve pipe at Peel
Green Road
K3
3
LC 31/01/13 LC 14/02/14 Access to remove Brick Stank within existing
2300 NB Brick Sewer connecting into Existing
Eccles WwTW Outfall Chamber
Entrapment, suffocation, explosions, fire,
drowning
The existing Brick Stank is to be removed on
completion of the upstream works to install the
2m dimater sewer from Eccles WwTW CSO.
Provide suitable access on Outfall Chamber
roof slab
2300 NB Brick Sewer upstream of Eccles
WwTW Outfall Chamber
Ref
Des
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Site
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Des
ign Section L
Working at heights
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Work near cliff top
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Pipe bridges
L1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Ex and new deep shafts and chambers Falls, injuries Follow approved access procedures for ex assets Design out where possible.Design to UU 'Designing for Safety' for barriers, access etcHAZOPsProvide maintenance plan for non-standard deep shafts
Shafts, CSO chamber, manholes
0
DRS
29/10/13
DRS
29/10/13
DRS
29/10/13
LC
12/11/2015
Roof work; intallation of access upstands, grilles, access covers
Falls, injuries Consider precast upstands to avoid working over large opening. Site to review the temporary works required
Shafts, CSO chamber, manholes
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Filter units when empty
L2
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Barton High Level Viaduct Falls, injuries Follow approved HA & BBMM access procedures access to bridge for inspections and installing monitoring instrumentation.Manage access through RAMS
Barton High Level Viaduct - Installing and Maintaining Monitoring. Bridge Assessment inspections.
Ref
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Site
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Des
ign Section M
Demolition, refurbishment, repair
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Prestressed structures or elements
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Instability issues
Ref
Des
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Site
vis
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Des
ign
Section N
Welfare /Security / Emergency
Arrangements
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
N1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Security system /existing security concerns Unauthorised entry onto the site, potential for injuries, damage and theft
Review of ex security arrangements, gates and fencing appropriate for level of risk of unauthorised entry
Eccles WwTW, Shaft 01, Shaft 02, Shaft 04 and Peel Green Rd
N2
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Vandalism Potential for injuries, damage and delays to programme
Review of ex security arrangements, gates and fencing appropriate for level of risk of vandalism
Eccles WwTW, Shaft 01, Shaft 02, Shaft 04 and Peel Green Rd
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Temporary emergency procedures Entrapment, suffocation, explosions, fire, drowning
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Does the contract affect partitioned fire emergency exit routes
0DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Are fire assembly areas disrupted
0
DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Have fire assembly access routes been accommodated
N3
3
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Are services available for use by the contractor? (e.g. Sewer, power, water connections
Injury, Diseases Contact service providers and make arrangements for provision of connections.
All work areas.
N4
4
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Have fire assembly access routes been accommodated
Injury, closure of facilities Ensure that working arrangements accommodate all known emergency access routes
Eccles WwTW and Salford City Stadium emergency access/egress to rear of stadium (across tunnel line)
Ref
Des
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Site
vis
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Des
ign Section P
Occupational Health
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
P1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Biological Hazard Working in live sewers - leptospirosis Avoid working in live sewers where possibleUse appropriate PPE.
All work areas.
P2
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Burning or cutting Injury Consider use of non-manual methodsUse appropriate PPE
All work areas.
P3
3
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Manual Handling - heavy building elements Muscular skeletal injury Consider use of non-manual methodsDesign out manual handling issues where possible both in construction and operation of permanent works
All work areas.
P4
4
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Noise Diseases - long term hearing impairment Consider use of low noise methods (eg Giken piling)Use appropriate PPE
All work areas.
P5
5
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Vibration Diseases - vibrosis Consider use of low vibration methods (eg Giken piling, mechanised breaking equipment)Use appropriate PPE
All work areas.
P6
6
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Dust and fibres Diseases - lung infection Use appropriate PPE All work areas.
P7
7
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Fumes Diseases -eye and lung infection Use appropriate PPEConsider alternatives to equipment that produce fumes (eg fixed power supply)
All work areas.
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Difficult working position / ergonomics possible depending on method of media removal
Ref
Des
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Site
vis
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Des
ign
Section Q
Environmental issues affecting H &S or
Welfare
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Giant hogweed and or Wild Parsnip
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Adders
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Version 2.0 July 2011
Capital Delivery
Q1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Insects Diseases Appropriate PPE and welfare procedures Eccles WwTW - Flies on filter beds
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Wildlife risks
0
Ref
Des
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tudy
Site
vis
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Des
ign Section R
Other significant hazards not identified
elsewhere
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
R1
1
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Foamed concrete production of explosive gasses Assess use prior incorporation within works All works area - chambers and sewers to be abandoned
R2
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Diving Operations Drowning, muscular skeletal injuries from impacts or differential pressures
Avoid diving operations where possible through design.Plan dives correctly and follow UU standard guidance on diving ops.Obtain relevant information on hazards within water bodies - ie sluices, underwater currents, vessels
Outfall structure
R3
3
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Hot works Injury, fire Avoid hot works where possible.Plan works and use appropriate PPE
All work areas.
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
NDT (including X-rays)
R4
4
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Projecting elements e.g.fish tail anchors Injury Appropriate PPE and warning/demarcation of projecting elements
All work areas.
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Explosives
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Highly flammable substances
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Removal of media from the filters
R5
5
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Waste removal Land contamination ,pollution of watercourses and groundwaters.Contact with hazardous substances, ingestion, inhalation, absorption leading to infections
Appropriate GI, assessment of materials to be excavated.Put in place SWMP, MMP and ECP.Use of appropriate excavation methods and use of appropriate PPE
All work areas.
NNDRS 29/10/13NDRS 29/10/13DRS
29/10/13
DRS
29/10/13
DRS
29/10/13Change of use of equipment
Ref
Des
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Site
vis
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Des
ign
Section S
Review of existing documentation and & of
facilities on site
Comment on suitability or perceived
consequences of missing information
Actions to be considered "Structure"/ location considered to be At
Risk.
S1 1DRS
29/10/13
DRS
29/10/13
DRS
29/10/13 H&S File information No available H&S File information Obtain available records and Eccles WwTW
S2
2
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
DSEAR and PEAZ PEAZ study undertaken for project Review and update PEAZ as required. All work areas.
S3
3
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Existing Emergency arrangements - e.g. Fire risk / evacuation plan, site emergency rules.
Injury, death, damage Obtain existing site procedures and include in site inductions and in planning of work activities and site set-up.
Eccles WwTW, works within 3rd party construction sites
S4
4
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Existing site traffic management plan Injury, death, damage Obtain existing site procedures and include in site inductions and in planning of work activities and site set-up.
Eccles WwTW, works within 3rd party construction sites
S5
5
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Asbestos survey reports Limited asbestos report for WwTW available Review report, identify limitations and undertake any further surveys as required. Include reports in PCI
Eccles WwTW
0
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Existing welfare facilities
S6
6
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Existing ALM reviews Injury Undertake ALM as part of design process All structures
S7
7
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Existing HAZID Study ReportExisting SIF (Safety Instrumented Functions) and SIL (Safety Integrity Level) Reviews
Injury, incorrect operation Undertake HAZID, SIF, SIL as part of design process
All structures
S8
8
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Existing Fire Risk review Injury, operational issues Undertake Fire Risk review as part of design processReview any ex facilities where temporary connections to be made (eg TBM power supply)
All structures with M&E installations
S9
9
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Existing HAZOP reports Injury, operational issues No ex Hazop. Undertake HAZOP as part of design process and update and review as appropriate through detailed design and construction.
S10
10
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Drawings Unable to design and plan works effectively Review scanned archive and investigate other sources (incl 3rd parties) to obtain available record dwgs. Review "as built drawings" for existing structures CSO and sewers and carry out asset surveys to confirm their configuration and condition. Include relevant information of design dwgs and PCI.
All existing sewers and structures (UU assets)All relevant 3rd party assets (eg HA structures)
S11
11
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
O & M manuals Unable to design and plan works effectively Obtain any available O&M manuals. Confirm O&M of ex equipment with operational staff
Eccles WwTW.MSCM60
S12
12
DRS
29/10/13
DRS
29/10/13
LC 31/01/13
DRS
29/10/13
LC 14/02/14
Existing SI reports or Asset surveys Unable to design and plan works effectively Obtain all relevant available records including 3rd party records.Review available information and identify any further surveys required to effectively design and construct works.
All works areas.
Ref
Des
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Site
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Des
ign
Section T
Hazards identified during Specific
Functional Reviews on project (See cell
comment)
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
0
LC
04/06/2014 Discharge Chamber at Peel Green Road Potential H & S issue if flow is not isolated
prior to entryWarning signs to be fitted to chamber access shaft wall or safety grille if fitted immediately below access cover
Peel Green Road PS Discharge chamber
0
LC
04/06/2014 Access to manhole PGR 7 when penstock operation or removal is required
Potentially muddy/slippy areas/dangerous access
Manhole PGR 7 relocated close to an existing footpath and 1m hardstanding provided around the access cover
Peel Green Road PS
0
LC
04/06/2014 Removal of pumps from PS to a vehicle parked in the lay-by
Potential H & S issue trolleying pumps weighing approx. 200kg each
Extend vehicle access to the edge of the pumping station
Peel Green Road PS
0
LC
04/06/2014 Pressure build up within the PS discharge chamber
Potential damage from pressure build No action required. There is enough ventilation within the chamber via non sealed access cover and sewer and upstream chambers.
Peel Green Road PS Discharge chamber
0
LC
04/06/2014 Unacceptable noise levels within the discharge chamber
Noise levels could potentially cause complaints from local residents
No action required. The permanent solution will have up-turned bellmouths discharging via sloped benching down to the invert. The 'mushroom' flow out of the bellmouths will ensure that the noise levels are kept to a minimum
Peel Green Road PS Discharge chamber
0000000000
Ref
Des
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Site
vis
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Des
ign
Section Z
Hazards identified at late stages of Project
Perceived consequences Actions to be considered "Structure"/ location considered to be At
Risk.
Z11
LC
12/11/2015 Installation of concrete upstands, grilles, access covers over large openings
Falls, injuries Consider precast upstands to avoid working over large opening. Site to review the temporary works required
SAL 0018 CSO
Z22
LC
12/11/2015 Confined Spaces Working in 1800 sleeve pipe during tunelling works
Entrapment, suffocation, explosions, fire,
drowning
Entry procedures and gas monitoring Peel Green Road (1200 sewer)
Z33
LC
12/11/2015 Possibilty of 'cathing' edge of existing 1980 brick sewer due to sheet pile tolerances; Possibility of ground settlements
Damage to existing structure; unsuccessful installation of sheet piles to design levels
Review the temporary works required for tconstruction of the CSO. Consider moving the CSO away from the existing brick sewer
SAL 0018 CSO
000000
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Version 2.0 July 2011
Capital Delivery
Hazard and Risk Management System (HARMS) Workbook -- Review Sheet
Date: 12 November 2015
R5 S12 T0 Z3
Click to sort sheet Click to adjust row height for text Click to add row
Risk
Ref
Location affected and Identified Hazard Perceived consequences
+ Actions to be considered
Mitigation Measures and Design
Assumptions at time of assessment
Revised Risk Risk status:
S if
Significant
Date of this
assessment
Designer (Name &
Discipline)
Person(s)
affected
Description of Residual Issues, Hazards or Risks
(including details of any Hazardous Materials assumed
to be included in the design)
Information to be provided about the
residual hazards - include drawing or
document references.
Detailed design
to include SHE
box on
drawings?
Potentially
include this
item in H&S
File? (Y/N)
A1 Area: All excavations. High Risk - all tunnels and shafts.
SAL 0018 CSO, Peel Green Road
Hazard: Unstable strata formations - excavations within
made ground, water logged sands/gavels and made
ground
Risk: Trench/excavation collapse, stability of
structures.
Action: Properly specified and designed TBM,
ground support, de-watering and application of
appropriate site controls.
Appropriate GI undertaken along line of tunnels
and scope confirmed with specialist consultants
and contractors.
GBR prepared on basis of GI.
All available historical GI obtained and relevant
GI from 3rd parties
Contract docs prepared to reflect GI findings.
PCI includes all relevant GI. Procurement
process included rigorous assessment that
appropriate TBMs and methodologies selected
for tunnelling and appropriate methodologies
adopted for shaft construction.
Risk and constructability workshops and reviews
undertaken. Site to review the temporary works
and provide a safe system of work. Monitor and
control rate of excavation/ground movement and
sufface settlement
Significant
S
29/10/2013
23/06/2015
12/11/2015
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
Visitors
Public
Risk of tunnel collapse and/or excessive settlement
leading to damage to 3rd party assets.
Possibility of damage to existing 1980 brick sewer or
undermining the structure
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
G5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
SAL0018/80023696/01/12/21030
SAL0018/80023696/01/12/21040
SAL0018/80023696/01/12/21041
SAL0018/80023696/01/12/21042
Y N
A10 Area: Abandoned 2300 and 1770x1150 sewers within
WwTW. Abandoned trunk sewer in Peel Green Rd
(entrance to WwTW).
Hazard: Existing abandoned underground structures
Risk: Stability of structure and surrounding
ground. Existing structure may contain
groundwater/sludge/pockets of gas..
Action: Desk top studies to identify structures
and available records.Trial holes. Control
through method statements. Existing buried
pipes to be broken out to allow construction
Available records obtained.
TH undertaken to confirm location and
size/construction. Existing abndoned sewers will
be broken out to enable construction
Significant
S
29/10/2013
23/06/2015
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors Unstable existing structures leading to collapse of
excavation.
Abandoned sewer/structures/pipes not filled/grouted up
and filled with groundwater leading to rapid inundation of
excavations.
Unknown materials with ex structures etc that may be
hazardous
Buried obstructions if trenchless techniques used. May
contain sludge/pockets of gas. Unexpected obstructions.
Restricted working space due to buried structures
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/01/17/20002
7570/80023696/01/17/20003
7570/80023696/01/17/20004
7570/80023696/01/17/20005
7570/80023696/01/17/20007
7570/80023696/01/17/20008
7570/80023696/01/14/20009
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
A11 Area: Tunnel S3 to S4
Hazard: Uncharted test piles for Barton HLB
Risk: Test piles encountered by TBM below
Barton HLB leading to over excavation and
increased risk of ground movement.
Intervention required below bridge to remove
piles..
Action: Obtain records from HA.
Undertake non-intrusive SI to confirm route free
of piles.
Consider TH below BHLB if non-intrusive
methods prove inconclusive.
If piles are found then inform HA and enter into
process to obtain agreement to method for pile
removal.
Available records obtained.
Non-intrusive SI undertaken.
Intrusive TH to be carried out (to be agreed with
HA) and any piles removed prior to tunnelling
commencing (pile removal to be agreed with HA)
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Risk of TBM striking uncharted piles resulting in excessive
ground movement and excavation from surface to TBM
face to remove piles.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
A12 Area: Tunnel S2 to S3 at Shaft 02 working area.
Hazard: Piles to bases of former o/h electricity pylon.
Risk: Piles encountered by TBM leading to over
excavation and increased risk of ground
movement. Intervention required to remove
piles..
Action: Obtain historical records from Statutory
undertakers.
Undertake TH to confirm pile location sand
undertake tests to confirm length of pile and
whether it affects tunnel.
If piles are found to affect the tunnel then
agree methodology for removal with relevant
authorities.
Obtain available records.
TH and testing to confirm length of pile
undertaken
Low 29/10/13 D Sephton - Civil Engineering Contractors
Piles
Visitors
If pile is longer than testing data suggests then obstruction
to tunnel potentially leading to over-excavation and
associated increased ground movement. Surface
intervention required to remove pile.
SSB, PCI
A2 Area: Tunnels S01 to S02, and S02 to S03, Shaft 01,
Shaft 02, new 2m diameter sewer next to former sludge
lagoon, new outfall to MSC.
Hazard: Unstable slopes on the land
Risk: Failure of embankments.
Action: Carry out appropriate GI, properly
designed permanated and temporary works to
limit movements of embankments and
surcharge loads imposed on new structures.
Design pipe away from sludge lagoon
Appropriate GI undertaken along line of tunnels
and pipelines and scope confirmed with
specialist consultants and contractors.
GBR prepared on basis of GI.
All available historical GI obtained and relevant
GI from 3rd parties
Contract docs prepared to reflect GI findings.
PCI includes all relevant GI.
Procurement process included rigorous
assessment that appropriate TBMs and
methodologies selected for tunnelling and
appropriate methodologies adopted for shaft
construction and pipeline construction.
Risk and constructability workshops and reviews
undertaken.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
UU Operatives
Risk of failure of former sludge lagoon embankment. SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1002
For each section, insert numbers in column A, to the maximum value as noted above and right
(The next two columns will auto fill with data from the HIC sheet)If risk is considered as Significant
(Status S), click arrow and add
information to cells as headings
Project Name: Man Trunk UIDs - SAL0018 Project number: 80023696Version: See BC Version
Last section numbers: A12 B11 C13 D19 E12 F5 G6 H13 J10 K3 L2 M0 N4 P7 Q1
return to main sheet
Guidance
The ACOP requires information to be included in the PCI, about the following aspects of a Significant Risk:(a) significant design assumptions and suggested work methods, sequences orother control measures;(b) arrangements for co-ordination of on-going design work and handling designchanges;(c) information on significant risks identified during design;(d) materials requiring particular precautions.
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
A3 Area: Shaft 01, 02 and Tunnel S1 - S2
Hazard: Sub- artesian conditions identified in BHs at
Shaft 01
Risk: Flooding of excavations, failure of
excavations, structural failures, flotation of
structures.
Action: Ground investigation, appropriate
construction methods, groundwater monitoring,
appropriate design of temporary and permanent
works
GI undertaken to confirm levels at which sub-
artesian conditions occur.
SSB design of shaft formation at a level where
sub-artesian conditions not considered an issue.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
UU Operatives
Sub-artesian conditions may become an issue if tunnel
levels or shaft formation levels lowered.
PCI, SSB, GBR, GI reports
A4 Area: All tunnels, works within WwTW, Shaft 04 and
outfall to MSC
Hazard: Potential to contaminate existing aquifer, public
or private water supplies
Risk: Pollution of water supply.
Action: Carry out testing of groundwater and
employ appropriate methods for disposal of
water arising from the works. Design GI and
permanent works to prevent introduction of
pathways for pollutants.
Appropriate GI undertaken.
Tunnel designed to be substantially watertight to
prevent egress of fluids into the surrounding
groundwater.
Tunnelling methodology to ensure that fluids
from tunnelling cannot contaminate
groundwater.
SSB docs highlight presence of aquifer and
requirements not to contaminate groundwater.
Low 29/10/13 D Sephton - Civil Engineering Public Contamination may become an issue if appropriate
tunnelling methodology is not adopted or tunnel not
constructed to be watertightness requirements.
PCI, SSB, GBR, GI reports
A5 Area: All excavations and tunnels within areas of made
ground or adjacent to/below areas of made ground in
particular landfill site and former sludge lagoon
Hazard: Contaminated ground water
Risk: Pollution of aquifer and surface
watercourses including Salteye Brook and
Manchester ship Canal . Contact with
hazardous substances by construction
operatives. Pollution risk from WwTW if
contaminated groundwater disposed of through
sewers..
Action: Carry out hydrogeological investigation
and employ appropriate methods for disposal of
pumped water
Appropriate GI undertaken along line of tunnels
and pipelines and scope confirmed with
specialist consultants and contractors.
GBR prepared on basis of GI.
All available historical GI obtained and relevant
GI from 3rd parties
Contract docs prepared to reflect GI findings.
PCI includes all relevant GI.
DQRA undertaken and agreed with EA/LPA for
re-use of materials affected by contaminated
groundwater.
Appropriate control of hazard through MMP,
ECP and RAMS.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
UU Operatives
Contaminated groundwater may become a significant risk if
appropriate tunnelling methodologies and treatment not
adopted.
PCI, SSB, GBR, GI reports
A6 Area: Works at Sallteye Brook crossing, MSC outfall and
access to ex SAL0018 subway
Hazard: Steep / Slippery Slopes
Risk: Falls, including falls into deep and
potential fast flowing water.
Action: Put in place a comprehensive method
statements and mitigation measures such as
barriers and signage
Advise of hazard through PCI. Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Falls, slips, drowning SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
A7 Area: All excavations in made ground
Ex electrical installations
Hazard: Asbestos
Risk: Contact/inhalation by operatives.
Action: Carry out appropriate GI and asbestos
surveys
GI undertaken and interpreted.
Some asbestos found made ground in GI along
tunnel S3 - S4
Contractor made aware through PCI and GI.
Contractor to develop procedures if excavtions
within made ground known to possibly contain
asbestos.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
Lung infection, disease SSB, PCI
A8 Area: All excavations and tunnels within areas of made
ground or in close proximity to areas of made ground in
particular landfill site and former sludge lagoon
Hazard: Contaminated land
Risk: Contact with hazardous substances, fire
or explosion, .
Action: Carry out testing of ground for
contaminates. Use of robust method
statements and following current guidance on
dealing with contaminated land
Appropriate GI undertaken along line of tunnels
and scope confirmed with specialist consultants
and contractors.
GBR prepared on basis of GI.
All available historical GI obtained and relevant
GI from 3rd parties
Contract docs prepared to reflect GI findings.
PCI includes all relevant GI. Procurement
process included rigorous assessment that
appropriate TBMs and methodologies selected
for tunnelling and appropriate methodologies
adopted for shaft construction.
Risk and constructability workshops and reviews
undertaken.
Significant
S
29/10/2013
10/06/2014
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
Public
Visitors
UU Operatives
Explosion from methane in solution within groundwater
contaminated by overlying landfill/made ground.
Infections/diseases from coming into contact with
contaminated material either through excavation or
transportation (including through residential areas).
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
7570/80023696/01/17/20002
7570/80023696/01/17/20003
7570/80023696/01/17/20004
7570/80023696/01/17/20005
7570/80023696/01/17/20007
7570/80023696/01/17/20008
7570/80023696/01/14/20009
A9 Area: All shafts and tunnels; pipelines, CSO chambers
Hazard: Highly permeable ground
Risk: Rapid Inundation of excavations,
instability of excavations and structures. Risk of
flotation .
Action: Desk top studies and on-site testing to
determine permeability. Design for flotation in
both temporary and permanent conditions
Appropriate GI undertaken along line of tunnels
and scope confirmed with specialist consultants
and contractors.
GBR prepared on basis of GI.
All available historical GI obtained and relevant
GI from 3rd parties
Contract docs prepared to reflect GI findings.
PCI includes all relevant GI.
Pump test to be undertaken where permeability
of material critical to design (shaft 04 and outfall)
TBM selection and shaft sinking methodology to
be appropriate for encountering highly
permeable ground. Site to manage/control any
water egress in working areas
Significant
S
29/10/2013
23/06/2015
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
Public
Visitors
Risk of tunnel/shaft collapse and/or excessive settlement
leading to damage to 3rd party assets
Rapid inundation of excavations/tunnels/shafts
Structural failure of shafts/tunnels and other u/g structures.
Risk of flotation of structures and pipelines
SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1002
DG5053/80023696/01/09/20103
DG5053/80023696/01/09/20104
DG5053/80023696/01/14/20107
7570/80023696/01/14/20009
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
B1 Area: Sewer network, WwTW
Hazard: Petrol station or fuel storage site
Risk: Explosion.
Action: Confirm location of fuel storage areas
and petrol stations that in the event of a spillage
can discharge to sewer network.
No DSEAR report available
PEAZ report prepared
Contrcator to manage through site procedures
for construction
Follow UU PEAZ and DSEAR guidance.
Appropriate zoning and rating of elec equipment.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Fire, explosion, injury HARMS
B10 Area: New outfall to MSC.
Hazard: Rapid changes in water pressure or flows within
MSC due to operation of sluices at locks.
Risk: Differential pressures or strong currents
immediately downstream of locks.
Action: Liaison with MSC operations team
Records of MSC structures and water levels
obtained.
Continued liaison with MSC over operation of
MSC and obtaining approvals for works in MSC.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors Risk of injury drowning to divers from underwater currents
and differential pressures.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
B11 Area: High risk - Shafts 01, 02 and tunnel S1 - S2. Other
areas, A57 access and Peel Green Rd works.
Hazard: Exhaust gases and spray from motor vehicles,
significant volumes of traffic that will be stationary during
peak times. Debris thrown from vehicles
Risk: Operatives sprayed with surface water
runoff from carriageway that may contain
chlorides or other substances. Carbon
monoxide build up from stationary traffic.
Operatives struck with debris from vehicles..
Action: Gas detection equipment in
excavations. Appropriate PPE. Adequate
fencing of working areas.
Make contractor aware through SSB/PCI.
Sufficient space allowed to provide adequate
fencing to protect workforce
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Exhaust gases and spray from motor vehicles. Debris
thrown from vehicles
SSB and PCI
B2 Area: WwTW due to filling and disposal of material, area
to west of M60 known landfill site
Hazard: Refuse Tipping (Industrial or Domestic)
Risk: Exposure to harmful substances, sharps
etc.
Action: Desk study to identify formal tips and
site visit to asses any fly tipping issues
Former landfill sites identified through available
records.
Areas of tipping on WwTW identified from
available records.
Appropriate GI undertaken and data made
available SSB, GSR, PCI.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
UU Operatives
Contact with hazardous substances during excavation or
transportation.
Contact with contaminated groundwater.
Presence of hazardous substances not identified in GI.
SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1002
SAL0018/80023696/01/01/11006
SAL0018/80023696/01/01/11007
Y Y
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
B3 Area: All construction areas to west of M60 including
tunnels
Hazard: Military Firing Range or area of WW2 bombing –
Unexploded Ordnance (UXO)
Risk: Explosion.
Action: Desk study to confirm risk of UXO. Non-
intrusive site investigation sif considered
feasible. UXO Safety awareness talks
Desk study report of UXO risk obtained from
specialist consultant.
Magnetometer survey to be undertaken within
MSC.
Non-intrusive surveys for UXO along S3-S4 if
feasible.
Significant
S
29/10/2013
10/06/2014
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
Public
Visitors
UXO encountered in tunnel or shaft excavation. SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
B4 Area: Works within WwTW site.
3rd party land.
Hazard: Stored chemicals in tanks
Risk: Explosion, burns, inhalation of toxic
fumes.
Action: Obtain O&M and H&S files for site.
Ensure all visitors and operatives receive site
induction and follow site rules. Design new
works, accesses and working areas to avoid
contact with storage areas. Liaison with
landowners.
Include in SSB, PCI that ex site WwTW site
procedures to be followed.
Liaise with 3rd party landowners re hazardous
substances stored or used on 3rd party land.
Low 29/10/13 D Sephton - Civil Engineering Contractors
Public
UU Operatives
Visitors
Explosion, burns, inhalation of toxic fumes if correct
procedures are not adopted
SSB, PCI
B5 Area: Works within WwTW site.
3rd party land.
Hazard: COSHH issues
Risk: Burns, skin irritation, inhalation of toxic
fumes.
Action: Obtain O&M and H&S files for site.
Liaison with landowners.
Include in SSB, PCI that ex site WwTW site
procedures to be followed.
Liaise with 3rd party landowners re hazardous
substances stored or used on 3rd party land.
Low 29/10/13 D Sephton - Civil Engineering Contractors
Public
UU Operatives
Visitors
Explosion, burns, inhalation of toxic fumes if correct
procedures are not adopted
SSB, PCI
B6 Area: Sewer networks, watercourses
Hazard: Vermin – rats / pigeons / seagulls – poisons
Risk: Leptospirosis and other diseases and
infections.
Action: Training and PPE. Obtaining information
on known problem areas from UU Ops
Include within PCI, SSB Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Disease, infections SSB/PCI
B7 Area: All existing and proposed structures. High risk - all
new sewer and tunnels and ex. SAL0018 CSO and
access subway
Hazard: Contact with live sewage, high flows, flooding
and surcharge
Risk: Entrapment, explosion, fire, inhalation,
disease, infection..
Action: PPE, forced ventilation, gas tests,
emergency exit. Control through method
statement sand training. Provide the flow data
Obtained water level and flow data from
hydraulic models.
Obtained sewer flood data.
Obtained flow and flood level data from EA.
Obtained MSC water level data.
Plan works to mitigate risks of inundation, high
flows, high water levels.
Design works not to result in additional flooding
and to be able to cope with anticipated design
flows and water levels.
Significant
S
29/10/2013
10/06/2014
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
Public
Visitors
UU Operatives
Injury, drowning, flooding, damage to assets and 3rd party
property
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
Y N
B8 Area: New outfallto MSC.
Hazard: Discharges to or re-suspension of contamination
within silt at base of MSC channel.
Risk: Toxic conditions within MSC.
Action: Liaison with MSC operations team.
Plan works to avoid periods where re-
suspension has occurred. May be particular
issue for diving operations.
Undertake tasting of water within the canal to
confirm that water is not toxic to those having to
work in MSC
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors Operatives (particularly divers) coming into contact with
toxic substances with canal.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
B9 Area: All works areas.
Hazard: Unauthorised discharges from UID works to
sewers and WwTW treatment process
Risk: Chemical overloading of works leading to
failure of treatment process or WwTW
operatives coming into contact with hazardous
substances.
Action: All discharges from UID works to be
controlled via WwTW permit system.
Confirm procedures with WwTW Ops and make
contractor aware of procedures in SSB.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Chemical overloading of works leading to failure of
treatment process or WwTW operatives coming into
contact with hazardous substances
SSB, PCI
C1 Area: All existing and proposed structures.
Hazard: Trade Effluent
Risk: Explosion, fire, inhalation of toxic fumes,
surges in flow.
Action: Obtain list of known trade effluent
discharge consents
Details of trade effluent discharges obtained and
included in PCI
Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Contact with hazardous substances, explosion SSB and PCI
C10 Area: Shaft 01 and Shaft 02 working areas
Hazard: Limited space within working areas for storage
of spoil, materials, plant, vehicles etc and vehicle
movements.
Risk: Accidents, injuries, unstable stockpiling of
spoil or storage of materials..
Action: Consider offsite (Eccles WwTW)
storage.
Maximise available working area (UU has
purchased No.09 Laburnum Ave).
Detailed planning of site layout, vehicle
movements and construction sequence.
Maximum available working area provided.
Constructability reviews undertaken with GCA
and specialist tunnelling consultants to confirm
there is sufficient space to construct works
safely.
S/C site layouts reviewed and s/c confirmed that
working areas sufficient.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Limited working space
Impact with 3rd party property/assets or public
SSB, PCI
C11 Area: All works on sewerage network and Eccles
WwTW.
Hazard: Wastewater Treatment
Risk: Hydraulical overloading of the works,
failure of works to meet regulatory consents.
Action: Discharge pumped groundwater
following quality assessments and obtain
permits to discharge form UU Network and
WwTW permitting teams.
Obtained water level and flow data from
hydraulic models.
Obtained sewer flood data.
Obtained flow and flood level data from EA.
Plan works to mitigate risks of inundation, high
flows, high water levels.
Design works not to result in additional flooding
and to be able to cope with anticipated design
flows and water levels.
Requirements for permits to discharge
groundwater etc highlighted in SSB.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Malfunction of WwTW leading to consent failure.
Flooding from WwTW
SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1001
C12 Area: All existing underground structures.
High risk - existing SAL0018 subway and CSO chamber
and new shaft sand tunnels. Peel Green Road. Entrance
to Eccles WwTW
Hazard: Existing underground chambers and sewers
Risk: Entrapment, confined space, inhalation of
gases, explosions.
Action: Forced ventilation
Obtain records of structure and access.
Known problematic access.
Modification works kept to a minimum and
components can be moved/placed safely via
manual handling.
Potential for toxic atmospheres and flooding
from sewers and culverted watercourses.
Contractor to consider forced ventilation and
monitoring of weather and flows/levels. Site to
consider monitoring conditions including the
atmosphere, water, slurry, contaminated land,
grouts, chemical additives
Significant
S
29/10/2013
23/06/2015
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Visitors
Limited working space - manual handling issues
Confined space toxic atmospheres
Inundation from sewers and culverts - injury, drowning
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1003
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
C13 Area: Spoil bund formation area on Eccles WwTW
Hazard: Eccles Archery Club adjacent to northern
boundary of Eccles WwTW working area. Club to remain
in use throughout works
Risk: Injury from stray arrows.
Action: Engagement with Eccles Archery Club.
Implementation of mitigation measures,
procedures and method statements to prevent
injury.
Archery club unable to be re-loacted or temp
closed due to designated international venue.
Continuous liaison with Archery club required.
Full safety zone cannnot be maintained.
Installation of mitigation along edge of working
area to provide suitable barrier to stray arrows
and to keep workforce away from barrier.
Ensure no archery taking place during
installation of mitigation.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Injury SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1001
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
C2 Area: Shafts 01, 02 and tunnel S1 - S2; Peel Green
Road Shaft
Hazard: Noise, ground movement and vibration from
construction activities in close proximity to residential
properties.
Risk: Disturbance to residents and potential for
structural damage to properties..
Action: Impose noise, ground movement and
vibration limits on works. Limit night and
weekend working. Impliment ground minitoring
techniques. Liaison with local residents.
Obtained appropriate GI and ground conditions
advised in SSB, PCI.
Limits on vibration, ground movement and noise
stated in SSB.
Requirement to use low noise/vibration piling
techniques at S1 and S2.
Daytime only working at S1 and S2 working
areas.
medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Damage to properties and 3rd party assists.
Adverse publicity
Breach of planning consent conditions
SSB and PCI
C3 Area: Shafts 01, 02 and tunnel S1 - S2
Hazard: Restricted access to residential properties due
to working areas.
Risk: Unsafe and limited access/egress for
residents. Potential for injury or distress..
Action: Provide adequate access to properties
acceptable alternative parking arrangements.
Ensure access/parking caters for
young/old/disabled residents and are properly
lit. Working areas to be adequately fenced.
Provided temporary footpath diversions.
Continued engagement with local residents.
Provision of alternative parking space for each
of the 8 no. houses affected.
Additional parking includes disabled provision.
Parking designed to meet current minimum
standards and vehicle movements auto tracked.
Consultation with residents over parking
requirements.
1.60m wide pedestrian/wheelchair access to
rear of properties incorporated into working
areas at S1 and S2.
medium 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
Adverse publicity
Damage to vehicles parked away from properties
No space provided for additional vehicles or visitors
Damage to vehicles whilst manoeuvring in restricted
parking area
SSB and PCI
C4 Area: Existing electrical panels within WwTW and
potentially within areas of made ground. Shaft 04
Working area and access road from A57
Hazard: Asbestos
Risk: Contact/inhalation by operatives.
Action: Carryout asbestos survey and removal
ahead of the works
WwTW site asbestos survey obtained and
included in PCI.
Any further surveys required to be undertaken.
Significant
S
29/10/13 D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Ex Asbestos survey not comprehensive.
Asbestos present in panels where electrical connections to
be made. Asbestos found in the Shaft 04 working area
SSB and PCI Y Y
C5 Area: New shafts and tunnels and existing sewer
network .
Hazard: Extremes of temperature
Risk: Failure of plant and equipment, adverse
effects of operatives.
Action: Consider providing forced ventilation
during the works and O&M
New tunnels and shafts - access to install
ventilation dusting for future maintenance of
shafts and tunnels incorporated into design of
shafts.
Maintenance Philosophy includes for use of
forced ventilation for inspection /maintenance of
shafts and tunnels
MS from contractors reviewed for ventilation
provision during construction.
significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Malfunction of plant is not designed for temperature range.
Injury to operatives if forced ventilation not provided.
SSB, PCI, Maintenance Philosophy
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
C6 Area: New shafts and tunnels and existing sewer
network .
Hazard: Extremes of humidity
Risk: Failure of plant and equipment, adverse
effects of operatives.
Action: Consider providing forced ventilation
during the works and O&M
MS from contractors reviewed for ventilation
provision during construction.
Through review process ensure plant is
designed to operate when exposed to
anticipated temp range.
New tunnels and shafts - access to install
ventilation dusting for future maintenance of
shafts and tunnels incorporated into design of
shafts.
Maintenance Philosophy includes for use of
forced ventilation for inspection /maintenance of
shafts and tunnels
significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Malfunction of plant is not designed for humidity range.
Injury to operatives if forced ventilation not provided.
SSB, PCI, Maintenance Philosophy
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
C7 Area: Shafts 01, 02 and tunnel S1 - S2
Hazard: Working adjacent/below/on motorway main
carriageway and slip roads
Risk: Accidents, queuing traffic, operatives
being struck by vehicles.
Action: Agreeing lane closures etc and working
procedures with Highways Agency ASC. Obtain
necessary approvals from HA/ASC. Consider
off peak period delivery/removal. Consider
access and egress points. Use approved HA
TM contractor.
Working areas separated from slip roads. Ex
VRS to be replaced with demountable VRS if
required for access.
Access to motorway to be agreed with ASC.
Restrictions on access to motorway agreed with
ASC and included in SSB/PCI.
Access to S1 during daytime now not off slip
road making it safer.
Use of Section 12 TM contractor for TM on
motorway.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Impact with vehicles using the main carriageway or slip
roads.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1003
C8 Area: A57 access works. Works within Peel Green Rd.
Hazard: Working adjacent to or within 'live' carriageways
Risk: Accidents, queuing traffic, operatives
being struck by vehicles or debris.
Action: Agreeing lane closures etc and working
procedures with Highway Authority. Obtain
necessary approvals from Highway Authority.
Use approved HA TM contractor.
Signage/coning to Chapter 8. Appropriate
fencing of works.
Liaison with local HA to agree access, road
closure and TM measures.
Undertake detailed risk assessments for access
and egress to/from Shaft 01 site
Agreed reduced speed limit on A57 at Shaft 04
site access.
Shaft 04 access - design access so that
vehicles and enter/leave site without queuing or
slewing into outside lane and gives required
sightline for vehicles exiting the site.
Significant
S
29/10/2013
23/06/2015
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Visitors
Public
Managing pedestrians crossing site accesses and working
areas
Vehicles exceeding temp speed limits. Man/machine
interface
SSB and PCI
SAL0018/80023696/00/98/1002
SAL0018/80023696/01/01/11006
SAL0018/80023696/01/01/11007
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
C9 Area: Shaft 02 working area
Hazard: Using residential streets to access working
areas. Roads designated as play streets. Significant on-
street parking.
Risk: Accidents, damage to 3rd party vehicles.
Action: Agreeing access route with local
authority and consult with residents on access
route.
Engage with residents over managing on-street
parking.
Manage vehicle movements to working areas to
avoid conflicts with construction/3rd party
vehicles.
Use works access of M60 slip roads for delivery
of large items of plant/materials
Undertaken an assessment of alternative
accesses in conjunction with SCC/UV.
Confirmed local roads the only viable access.
Agreed access route TM proposals with
SCC/UV to ensure construction vehicles can
access site safely.
Undertaken consultation with local residents re
TM and construction access
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Adverse publicity
Impact from vehicles ignoring TM regime
Damage to 3rd party vehicles due to restricted highway
widths and on-street parking.
SSB, PCI
D1 Area: 1980mm dia brick sewer, MH01, and MH02,
existing SAL 0018 CSO chamber, New SAL 0018 CSO
Hazard: Making alterations to existing 1980mm NB brick
sewer that conveys combined flows. Excavating
immediately adjacent to 1980 NB sewer.
Risk: Significant flows, flooding, surcharging or
collapse resulting in injury or drowning.
Action: Plan works to take into account weather
conditions. Undertake internal surveys to
confirm structural condition. Provide flow data
Obtained existing records
Obtained flow, level and flooding data from
hydraulic model
Sheet piling to be installed to construct CSO off-
line without damaging ex sewer. Site to review
the temporary works requirement and provide a
safe sytem of work
Significant
S
29/10/2013
23/06/15
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Visitors
Public
Collapse of ex sewer leading to flooding and possible
inundation of excavations. Deep Excavations adjacent to
existing sewer. Construction of chambers over existing
sewer
SSB/PCI SAL0018/80023696/01/12/21030
SAL0018/80023696/01/12/21040
SAL0018/80023696/01/12/21041
SAL0018/80023696/01/12/21042
Y N
D10 Area: Peel Green Road working areas
Hazard: BT overhead cables
Risk: Loss of service, work stoppage.
Action: Seek undertaker's opinion and carry out
diversions ahead of the works where
necessary. Design pipeline to avoid telegraph
poles
Statutory undertakers records obtained.
Statutory undertakers consulted re works at
affected area.
Diversion of service ordered to meet
programme.
low 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Diversion not undertaken to meet programme. SSB/PCI
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
D11 Area: New 1200NB sewer u/s of Eccles WwTW inlet
CSO. Temporary access road to Eccles WwTW site
compound.
Hazard: 3 x 1050NB cast iron trunk water mains -
THIRLMERE AQUEDUCT
Crossing below aqueduct with new 1200NB ewer.
Risk: Bursts, rapid inundation of excavations,
erosion of ground, flooding of homes, loss of
service, injuries, work stoppage.
Action: Liaison with UU team responsible for
aqueduct.
Undertake TH to confirm exact
location/depth/condition.
Develop method statements in conjunction with
UU asset team for undertaking aqueduct
crossing. Consider construction method.
Consider micro-tunnelling
TH undertaken to confirm location and level of
pipes.
UU Aqueduct Ops contacted.
Contractor to submit method statements to UU
Ops. Method for crossing aqueduct to be agreed
with UU Ops.
Limits on ground movement below aqueduct
stated in SSB.
Significant
S
29/10/2013
14/04/2014
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Visitors
Public
Unable to meet requirements of UU water ops on asset
movement criteria.
Risk to asset considered to great.
Movement of mains resulting in burst, inundation od=f
excavations, injury, drowning, damage to 3rd party property
and flooding.
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1001
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20103
DG5053/80023696/01/14/20107
Y Y
D12 Area: Tunnel S3 to S4 and Shaft04/Outfall.
Hazard: Redundant 165NB cast iron Naptha main
Risk: Fire, explosion.
Action: Obtain records and agree methodology
for removal with asset owner
NGG contacted to confirm main is redundant
TH undertaken to confirm location of main.
NGG procedures to be obtained to remove
sections of redundant main.
Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Redundant main still contains residual gases or fluids that
could result in explosion during removal or damage from
ground movements.
SSB/PCI
D13 Area: Access to Shaft 01 and Shaft02 working areas
Hazard: Motorway communications and lighting cables
Risk: Fire, explosion, electrocution, disruption to
services.
Action: Obtain records from HA and agree
methodology for protection with asset owner.
Undertake trial pits. Provide services protection
slab
Comms and power cable records obtained from
HA/BBMM.
HA/BBMM contacted re works at each affected
area.
Temporary protection to services at access to
be provided in accordance with HA/BBMM
requirements
TH undertaken to confirm locations, depths and
nature of services
Ground movement/damage assessment to be
undertaken by tunnelling s/c where services with
ZOI of tunnels/shafts
Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Uncharted services.
Services in poor condition.
SSB/PCI
D14 Area: Access to Shaft 01 and Shaft02 working areas,
Tunnel S1 - S2, Tunnel S3 - S4 (Barton HLV low level
carrier drains)
Hazard: Motorway main carriageway and slip road
drainage
Risk: Inundation of working areas or
excavation, flooding of highways with the
potential to cause accidents.
Action: Obtain records from HA and agree
methodology for protection with asset owner
Records of drainage obtained.
Drainage to be CCTV surveyed to determine
condition pre- and post- tunnelling
Ground movement/damage assessment to be
undertaken by tunnelling s/c where services with
ZOI of tunnels/shafts.
Protective measures to be undertaken by
tunnelling s/c
low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Uncharted services.
Services in poor condition.
SSB/PCI
D15 Area: Existing assets during tunnelled crossing below
assets - Tunnel drive S2 - S3
Hazard: UU sewers - Existing 1200 NB surface water
sewer and 1000NB combined sewer.
New 2000NB sewer if construction sequence results in
tunnel crossing following installation
Risk: Potential for new or worsening of existing
structural defects leading to a potential collapse
or loss of structural integrity/watertightness.
Ingress of fines into sewer leading to ground
movement and potential failure of earthworks
above sewers..
Action: Design tunnel vertical and horizontal
alignments to minimise risk of damage to
sewers. Undertake appropriate GI. Select and
design tunnelling works to minimise risk of
ground settlement and subsequent damage to
sewer. Undertake CCTV surveys to determine
structural condition. Undertake appropriate
monitoring during tunnelling works. Set
allowable settlement and vibration limits.
Surveys undertaken to accurately located
assets.
Internal surveys (CCTV and walkthrough) to
determine existing condition.
Limits on ground movement and vibration and
assets set in SSB.
Preliminary Ground movement/damage analysis
undertaken to confirm whether protective
measures required.
Tunnel vert alignment set to minimise ground
movement at asset
S/c submissions reviewed to ensure protection
to assets addressed in submission
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Greater than expected ground movements leading to
damage to assets and associated consequences.
SSB, PCI, Maintenance Philosophy and
Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
D16 Area: Existing assets during tunnelled crossing below
assets - Tunnel drive S2 - S3
Hazard: HA Assets - 2 no. 2400 x 3000 culverts -
SALTEYE BROOK CULVERTS
Risk: Potential for new or worsening of existing
structural defects leading to a potential collapse
or loss of structural integrity/watertightness.
Ingress of fines into sewer leading to ground
movement and potential failure culverts or M60
embankment above sewers..
Action: Design tunnel vertical and horizontal
alignments to minimise risk of damage to
culverts. Undertake appropriate GI. Select and
design tunnelling works to minimise risk of
ground settlement and subsequent damage to
culverts. Undertake man-entry surveys to
determine structural condition. Undertake
appropriate monitoring during tunnelling works.
Set allowable settlement and vibration limits.
GI obtained to be able to determine ground
movements from tunnelling.
Available HA records reviewed to determine ex
condition
Limits on ground movement and vibration and
assets set in SSB.
Preliminary Ground movement/damage analysis
undertaken to confirm whether protective
measures required.
Tunnel vert alignment set to minimise ground
movement at asset
S/c submissions reviewed to ensure protection
to assets addressed in submission
Included within AIP for M60 crossing (to be
accepted by HA)
Pre & post condition inspection and monitoring
requirements stipulated in SSB and AIP
significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Greater than expected ground movements leading to
damage to assets and associated consequences.
Asset condition has deteriorated since last inspection
SSB, PCI, Maintenance Philosophy and
Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
D17 Area: All new pipelines, manholes, shafts, tunnels and
structures
Hazard: Service pipes and tanks
Risk: Fire, explosion, disruption to services,
inundation of excavations, drowning, excavation
collapse.
Action: Obtain service records. Underatke
service scan as part of top survey. Undertake
THs at critical locations or at critical services.
Identify and order diversions where required
Available records of WwTW services obtained
and plotted on dwgs.
Service scan undertaken as part of topo survey.
Diversions or affected services determined.
low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Uncharted services.
Services in poor condition.
SSB/PCI
D18 Area: Eccles WwTW temporary access road; 2m
diameter pipeline; temporary car park
Hazard: Existing 250mm sludge main which operates at
pressures up to 25 bars
Risk: Damage from construction plant and
vehicles for proposed temporary car park.
Action: Provide protection at crossing points
and below temporary car park
Contractor to follow United Utilities Guidance
and advice to protect the pipe during
construction of the new pipeline and temporary
car park. Contractor to provide designated
crossing points during construction. Cover depth
of the sludge main to be confirmed on site
Significant
S
14/04/14 Lloyd Chapeyama-Civil
Engineering
Contractors
UU Operatives
Pressurised sludge main over the new 2m diameter sewer
and below the temporary car park
7570/80023696/01/17/20005 Y N
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
D2 Area: 1980mm NB brick sewer above tunnel S1 - S2
Hazard: Tunnelling below 1980NB brick sewer with
cracks visible in soffit
Risk: Potential for new or worsening of existing
structural defects leading to a potential collapse
below the M60..
Action: Design tunnel vertical and horizontal
alignments to minimise risk of damage to
sewer. Undertake appropriate GI. Select and
design tunnelling works to minimise risk of
ground settlement and subsequent damage to
sewer. Undertake CCTV surveys to determine
structural condition. Undertake appropriate
monitoring during tunnelling works. Set
allowable settlement and vibration limits.
Proposed tunnel alignment kept as far away
from cracked section given site constraints for
shafts.
6 monthly monitoring of defect undertaken prior
to tunnelling. Any changes in cracking to be
notified and taken account of in the design.
GI undertaken and interpreted
Ground movement and damage assessment
undertakne to confirm ground movement should
not damage sewer
Crossing of sewer included in AIP for JN11
TBM selection to minimise risk of excessive
ground loss/settlment
Appropraite pre- and post-construction
monitoring
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Damage to sewer from excessive ground loss/settlement.
Collapse of M60 carriageway.
Injury/vehicle impact
Flooding
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
D3 Area: Shaft 04 and tunnel S3 - S4.
Hazard: 24" steel trunk water main
Constructing shaft in immediate vicinity of main and
tunnelling in close proximity and below main.
Main known to be in poor condition with reported bursts
in recent years.
Risk: Bursts, rapid inundation of excavations,
erosion of banks of MSC, loss of service,
injuries, work stoppage.
Action: Liaison with UU water networks team.
Diversion/replacement of section sof main
considered to be at unacceptable levels of risk.
Undertake TH to confirm exact
location/depth/condition.
TH undertaken to confirm location
Ground movement assessment undertaken for
tunnel and shaft
Liaised with UU Water Ops re ground
movement. Confirmed main in poor condition
(previously suffered bursts in this area) and no
settlement of main permitted.
Engaged NCA to design and replace affected
sections of main.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Diversion/replacement works will be undertaken within UID
working areas. Liaison between NCA and GCA required.
Damage to main during diversions.
Damage to replaced main during Shaft04/outfall
construction
SSB/PCI
D4 Area:
Hazard: Major Accident Hazard Pipelines (see in-cell
comment)
Risk: Fire, explosion, disruption to services.
Action: Undertake Linesearch - no MAHP within
proximity of works. No further action proposed.
Undertaken further MAHP check prior to letting
contract (ensure MAHP check is no more than 6
months old).
Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Out of date MAHP data.
Uncharted services.
SSB/PCI
D5 Area: Shaft 04/New MSC outfall. Shaft 01 working area
(footpaths).
Hazard: Virgin media fibre optic cables
Risk: Undertaking excavations in close
proximity to cables or traversing over the cables
with plant. Striking services, disruption to
services, delays.
Action: Seek undertaker's opinion and carry out
diversions ahead of the works where
necessary.
Obtained Virgin media records.
Site meeting held and location of cables
confirmed with TH.
Outfall designed to avoid diversion.
VM requirements to protect cables included in
SSB/PCI.
VM confirmed that cables to be OCC by Nov 14.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Cables not OCC by Nov 14.
Protection requirements not adhered to.
Any re-design of outfall affects cables.
SSB/PCI
D6 Area: Shaft 01 and Shaft 02 working areas, Tunnel S3 to
S4.
Temporary construction accesses crossing services
Sub-station immediately adjacent to Shaft02 working
area and immediately above tunnel S2 - S3.
Peel Green Rd working areas
Hazard: High Voltage Electricity (incusing sub-stations)
Risk: Fire, explosion, electrocution, disruption to
services.
Action: Obtain service records. Undertake
service scan as part of topo survey. Undertake
THs at critical locations or at critical services.
Engage the suppliers. Provide protection slab
over services. Consider construction method.
Identify and order diversions where required.
Liaise with services undertakers.
Statutory undertakers records obtained.
Statutory undertakers contacted re works at
each affected area.
Temporary protection to services at access to
be provided in accordance with SA requirements
TH undertaken to confirm locations, depths and
nature of services
Ground movement assessments undertaken for
tunnels and shafts to confirm whether SA assets
at risk. Damage assessment undertaken.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Uncharted services.
Services in poor condition.
PCI, SSB
D7 Area: Shaft 01 , Eccles WwTW and Peel Green Road
working areas
Hazard: Low Voltage Electricity
Risk: Fire, explosion, electrocution, disruption to
services.
Action: Seek undertaker's opinion and carry out
diversions ahead of the works where
necessary. Provide protection slab for services;
Consider construction method
Statutory undertakers records obtained.
Statutory undertakers consulted re works at
each affected area.
Diversion of service ordered to meet
programme.
Low 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Uncharted or poorly charted services. PCI, SSB
D8 Area: Peel Green Road working areas
Hazard: Low pressure gas mains
Risk: Fire, explosion, disruption to services.
Action: Seek undertaker's opinion and carry out
diversions ahead of the works where
necessary. Consider construction method
Statutory undertakers records obtained.
Statutory undertakers consulted re works at
affected area.
NGG Guidance on working adjacent/around
asset to be followed.
low 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Uncharted or poorly charted services.
Service in poor condition
Working procedures not followed.
PCI, SSB
D9 Area: Peel Green Road working areas
Hazard: Low pressure water mains
Risk: Bursts, inundation of excavations,
erosion of ground, loss of service, injuries, work
stoppage.
Action: Seek undertaker's opinion and carry out
diversions ahead of the works where
necessary. Consider construction method
Statutory undertakers records obtained.
Statutory undertakers consulted re works at
affected area.
UU Water Ops Guidance on working
adjacent/around asset to be followed.
low 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Uncharted or poorly charted services.
Service in poor condition
Working procedures not followed.
PCI, SSB
E1 Area: Residential properties at the Shaft 01, Shaft 02
and Peel Green Road working areas.
Hazard: Residential buildings in close proximity to large
plan area, deep excavations.
Risk: Ground movement or vibration resulting in
instability, structural defects, partial or full
structural failure.
Action: Undertake pre- and post- construction
structural assessments as appropriate.
Undertake GI and other SI to obtain relevant
information to be able to design and undertake
works in a manner to minimise vibration and
ground movement. Avoid structures by design if
possible. Provide sufficient working space
around structures to avoid impact damage or
undermining. Undertake appropriate monitoring
during the works. Set allowable settlement and
vibration limits.
Appropriate GI undertaken.
Excavations located as far away from properties
that site restrictions will allow.
Sufficient working space provided to construct
works without inevitable damage to properties.
Preliminary ground movement analysis
undertaken to determine impact of tunnel/shaft
works on properties.
Pre construction condition surveys of properties
undertaken.
Ground movement and vibration limits for works
adjacent to properties stated in SSB.
Low vibration piling techniques specified in SSB.
Appropriate ground movement and vibration
monitoring specified requirement in SSB. Site to
monitor and control rate of
advance/excavation/ground movement and
sufface settlement. Periodic Inspection regime
Significant
S
29/10/2013
23/06/2015
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Visitors
Public
Greater than expected ground movements and vibration
leading to damage to properties and associated
consequences.
SSB, PCI, Maintenance Philosophy and
Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1003
DG5053/80023696/00/98/1003
DG5053/80023696/01/01/20102
DG5053/80023696/01/09/20103
DG5053/80023696/01/09/20104
DG5053/80023696/01/11/20111
DG5053/80023696/01/14/20107
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
SAL0018/80023696/01/12/21030
SAL0018/80023696/01/12/21040
SAL0018/80023696/01/12/21041
SAL0018/80023696/01/12/21042
Y N
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
E10 Area: Barton Locks
Hazard: Tunnelling in close proximity to Barton Locks
Risk: Ground movement or vibration resulting in
instability, structural defects, partial or full
structural failure.
.
Action: Obtain records. Undertake pre- and
post- construction structural assessments as
appropriate. Undertake GI and other SI to
obtain relevant information to be able to design
and undertake shaft construction and tunnelling
works in a manner to minimise vibration and
ground movement. Avoid affecting structures by
design if possible. Provide sufficient working
space around structures to avoid impact
damage or undermining and provide sufficient
space in case surface intervention to TBM is
required. Undertake appropriate monitoring
during the works. Set allowable settlement and
vibration limits.
Available records obtained and included in SSB
and PCI.
Appropriate GI undertaken.
Tunnel located as far away from locks that site
restrictions will allow.
Sufficient space provided to construct works
without inevitable damage to locks.
Preliminary ground movement analysis
undertaken to determine impact of tunnel/shaft
works on locks.
Pre construction condition surveys of locks to be
undertaken.
Ground movement and vibration limits for works
adjacent to locks stated in SSB.
Appropriate ground movement and vibration
monitoring specified requirement in SSB.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Greater than expected ground movements and vibration
leading to damage to locks and associated consequences.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
E11 Area: Salteye Brook Outfall structure and associated
services.
Hazard: Tunnelling in close proximity ex. Salteye Brook
Outfall Structure. Traversing plant across Salteye Brook
Outfall Structure. (note the outfall structure forms a
bridge across the brook).
Risk: Ground movement or vibration resulting in
instability, structural defects, partial or full
structural failure.
Instability, structural defects, partial or full
structural failure resulting from exceeding safe
weight limit for vehicles crossing the bridge.
Failure of assets fixed to or laid across bridge -
24" trunk water main and Virgin Media cables
(see Services section above).
Action: Obtain records. Undertake pre- and
post- construction structural assessments as
appropriate. Undertake GI and other SI to
obtain relevant information to be able to design
and undertake tunnelling works in a manner to
minimise vibration and ground movement.
Avoid affecting structures by design if possible.
Provide sufficient working space around
structures to avoid impact damage or
undermining and provide sufficient space in
case surface intervention to TBM is required.
Undertake appropriate monitoring during the
works. Set allowable settlement and vibration
limits.
Obtain SWL of bridge from MSC Operations
Team. If this information is not available then
undertake assessment of SWL of bridge.
Where appropriate, instigate procedures to limit
weight of vehicles crossing bridge.
Available records obtained and included in SSB
and PCI.
Appropriate GI undertaken.
Tunnel located as far away from outfall structure
that site restrictions will allow.
Sufficient space provided to construct works
without inevitable damage to outfall structure.
Preliminary ground movement analysis
undertaken to determine impact of tunnel/shaft
works on outfall structure.
Pre construction condition surveys of outfall
structure to be undertaken.
Ground movement and vibration limits for works
adjacent to outfall structures stated in SSB.
Appropriate ground movement and vibration
monitoring specified requirement in SSB.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Greater than expected ground movements and vibration
leading to damage to outfall structure and associated
consequences.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
E12 Area: Banks of MSC
Hazard: Tunnelling in close proximity to earth bank of
MSC . Shaft and outfall construction next to and within
the bank of the MSC .
Risk: Ground movement or vibration resulting in
instability, defects, partial or full slope failure.
Failure of assets fixed to or laid across bridge -
24" trunk water main and Virgin Media cables
(see Services section above).
Action: Obtain records. Undertake pre- and
post- construction condition assessments as
appropriate. Undertake GI and other SI to
obtain relevant information to be able to design
and undertake shaft construction, tunnelling
works, outfall wall and outfall channel formation
in a manner to minimise vibration and ground
movement. Avoid affecting structures by design
if possible. Provide sufficient working space
around structures to avoid impact damage or
undermining and provide sufficient space in
case surface intervention to TBM is required.
Undertake appropriate monitoring during the
works. Set allowable settlement and vibration
limits.
Available records obtained and included in SSB
and PCI.
Appropriate GI undertaken.
Tunnel located as far away from MSC banks
that site restrictions will allow.
Sufficient space provided to construct works
without inevitable damage to MSC banks.
Preliminary ground movement analysis
undertaken to determine impact of tunnel/shaft
works on MSC banks.
Pre construction condition surveys of MSC
banks to be undertaken.
Ground movement and vibration limits for works
adjacent to MSC banks stated in SSB.
Appropriate ground movement and vibration
monitoring specified requirement in SSB.
Bathymetric survey of canal banks at outfall
structure to be undertaken prior to outfall
construction commencing.
Design of outfall incorporates features to
maintain integrity of MSC bank from channel
excavation and erosion from outfall flows.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Greater than expected ground movements and vibration
leading to damage to MSC banks and associated
consequences.
Detailed design of outfall does not incorporate appropriate
measures to ensure integrity of MSC banks.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
E2 Area: Garden walls to residential properties in close
proximity to the Shaft 01, Shaft 02 and Peel Green Rd
working areas and garages above the line of the tunnel
S2 - S3
Hazard: Pre-fabricated garages, garden walls in close
proximity to deep excavations or located above tunnelling
works.
Risk: Ground movement or vibration resulting in
instability, structural defects, partial or full
structural failure.
Action: Undertake pre- and post- construction
structural assessments as appropriate.
Undertake GI and other SI to obtain relevant
information to be able to design and undertake
works in a manner to minimise vibration and
ground movement. Avoid structures by design if
possible. Provide sufficient working space
around structures to avoid impact damage or
undermining. Undertake appropriate monitoring
during the works. Set allowable settlement and
vibration limits.
Appropriate GI undertaken.
Excavations located as far away from garden
walls etc that site restrictions will allow.
Sufficient working space provided to construct
works without inevitable damage to properties.
Preliminary ground movement analysis
undertaken to determine impact of tunnel/shaft
works on walls & garages.
Pre construction condition of walls & garages
undertaken.
Ground movement and vibration limits for works
adjacent to walls & garages stated in SSB.
Low vibration piling techniques specified in SSB.
Appropriate ground movement and vibration
monitoring specified requirement in SSB.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
Greater than expected ground movements and vibration
leading to damage to garages & walls
SSB/PCI
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
E3 Area: 3300 x 2180 r.c. storm water box culvert in Eccles
WwTW.
Hazard: UU asset - 3300 x 2180 storm water box culvert
founded on piles. Removal of section to form new
surcharge relief chamber
Risk: Section of culvert requires removal to
form new chamber.
Storm flows within culvert may result in rapid
inundation of excavations or working areas if
flows not dealt with effectively during pile
removal. Inadequate measures to deal with
flows will result in severe flooding from the
sewer network upstream of the Eccles WwTW
Inlet CSO..
Action: Obtain record information for structure.
Undertake surveys to confirm condition of
culvert. Install suitable measures to deal with
flows during culvert removal.
Appropriate GI undertaken.
Ground movement and vibration limits for works
adjacent to properties stated in SSB.
Survey to confirm asset condition undertaken
TH and pile test undertaken to confirm location
and length of piles. Piles within tunnel vert
horizon
Hydraulic modelling undertaken to confirm that
flows can be temp diverted into new 2000NB
without increase in u/s flooding. Consequently,
culvert can be broken out and piles removed
prior to tunnelling commencing.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Unable to remove piles
Unable to divert flows to new 2000NB if installation of
2000NB delayed.
SSB/PCI
E4 Area: 1240 x 1240 final effluent culvert and 3000 x 2000
r.c. storm water box culvert in Eccles WwTW.
Hazard: UU assets - 1240 x 1240 final effluent culvert
and 3000 x 2000 storm water box culvert located within
working area for Shaft 03.
Risk: Structural capacity of culverts unknown.
Area above the culverts potentially subject to
plant movements, material storage, spoil
treatment and stockpiling. Potential for
structural failure/collapse leading to rapid
inundation of excavations or working areas and
severe flooding from the sewer network
upstream of the Eccles WwTW Inlet CSO..
Action: Obtain record information for structures.
Undertake surveys to confirm condition of
culverts, wall thickness rebar etc. Determine
structural capacity of culverts. Limit plant
movements, storage and stockpiling to suit
structural capacity.
Available records obtained and surveys
undertaken to confirm location and existing
condition.
Location of assets plotted on dwgs.
Requirement to protect assets included within
SSB.
Significant
S
29/10/2013
10/06/2014
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Visitors
Public
Assets not protected or movements over assets not
controlled leading to structural failure, injury, rapid
inundation, WwTW consent failure and WwtW and network
flooding
SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1002
7570/80023696/01/17/20002
7570/80023696/01/17/20003
7570/80023696/01/17/20004
7570/80023696/01/17/20005
7570/80023696/01/17/20007
7570/80023696/01/17/20008
7570/80023696/01/17/20006
7570/80023696/01/14/20009
7570/80023696/01/14/20012
7570/80023696/01/14/20013
7570/80023696/01/14/20014
7570/80023696/01/14/20015
7570/80023696/01/14/20016
7570/80023696/01/14/20017
7570/80023696/01/14/20018
Y N
E5 Area: 1240 x 1240 r.c. final effluent box culvert in Eccles
WwTW.
Hazard: UU asset - 1240 x 1240 final effluent box culvert.
Removal of section to form new chamber
Risk: Section of culvert requires removal to
form new chamber.
Continuous final effluent flows within culvert
may result in rapid inundation of excavations or
working areas if flows not dealt with effectively
during removal of culvert. Inadequate measures
to deal with flows will result in failure of the
treatment process and potential for flooding of
the WwTW..
Action: Obtain record information for structure.
Undertake surveys to confirm condition of
culvert. Install suitable measures to deal with
flows during culvert removal.
Available records obtained and surveys
undertaken to confirm location and existing
condition.
Location of assets plotted on dwgs.
Requirement to protect maintain flows included
within SSB.
Flow and level data obtained from hydraulic
modelling and included in SSB.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Flows not maintained resulting in WwTW consent failure
and WwtW and network flooding
SSB and PCI
E6 Area: 1240 x 1240 r.c. final effluent box culvert and 3 x 2
storm culvert in Eccles WwTW.
Hazard: UU asset - 1240 x 1240 FE and 3 x 2 storm
water box culvert founded on piles. Tunnel S2 - S3
crossing below culvert
Risk: Tunnelling below will result in ground
movement or vibration potentially resulting in
instability, structural defects, partial or full
structural failure.
Continuous final effluent flows within culvert
may result in rapid inundation of excavations or
working areas if flows not constrained within
culvert due to structural failure. Inadequate
measures to deal with flows will result in failure
of the treatment process and potential for
flooding of the WwTW. Flows escaping from
culvert may result in erosion of ground above
tunnel..
Action: Obtain record information for structure.
Undertake surveys to confirm condition of
culverts, wall thickness rebar etc. Determine
structural capacity of culverts and ability to
resist ground movement. Install appropriate
support during tunnelling to maintain integrity of
culvert during tunnelling.
Surveys undertaken to accurately located
assets.
Internal surveys (CCTV) to determine existing
condition.
Limits on ground movement and vibration and
assets set in SSB.
Preliminary Ground movement/damage analysis
undertaken confirming that protective measures
required
S/c submissions reviewed to ensure protection
to assets addressed in submission
Significant
S
29/10/2013
10/06/2014
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Visitors
Public
Inadequate asset protection measures resulting in FE flows
and storm flows not maintained resulting in structural
failure, rapid inundation of excavations, injury, drowning,
WwTW consent failure and WwtW and network flooding.
SSB, PCI and Significant Hazard Dwgs:
SAl0018/80023696/00/98/1002
7570/80023696/01/17/20002
7570/80023696/01/17/20003
7570/80023696/01/17/20004
7570/80023696/01/17/20005
7570/80023696/01/17/20007
7570/80023696/01/17/20008
7570/80023696/01/17/20006
7570/80023696/01/14/20009
7570/80023696/01/14/20012
7570/80023696/01/14/20013
7570/80023696/01/14/20014
7570/80023696/01/14/20015
7570/80023696/01/14/20016
7570/80023696/01/14/20017
7570/80023696/01/14/20018
Y N
E7 Area: Alternative construction access (along main
WwTW access road) to Shaft 03.
Hazard: FTFT culvert below main access road (linking
inlet channel to primary settlement tanks).
Risk: Structural capacity of culverts unknown. If
main access is used for alternative construction
access then structural failure may occur is
structural capacity of culvert is exceeded.
Failure of culvert would lead to flooding, injury..
Action: Obtain record information for structure.
Confirm structural capacity prior to use as a
construction access route.
Load capacity of culvert determined and advised
within SSB and PCI.
Vehicle loadings to be limited to safe limit.
low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Structural failure resulting in flows not maintained resulting
in WwTW consent failure and WwtW and network flooding.
Structural failure resulting in injury.
SSB and PCI
E8 Area: Eccles WwTW - Ex Filter beds (northern bank) and
final settlement tanks
Hazard: Eccles WwTW - Ex Filter beds (northern bank)
and final settlement tanks - deep excavations for
pipelines and shafts in close proximity to these
structures.
Risk: Failure of excavation support or impact
from construction plant may result in structural
damage or damage/entanglement to
mechanical equipment. Damage may result in
failure of treatment process, flooding, injury..
Action: Obtain record information for structures.
Design and implement robust ground support to
excavations. Install adequate fencing to
working area boundaries.
Available records of assets obtained and
included in SSB and PCI.
Excavations kept an appropriate distance away
from structures.
Ground movement and vibration limits stated in
SSB.
Requirements for condition surveys and
monitoring stated in SSB.
low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Structural failure resulting in flows not maintained resulting
in WwTW consent failure and WwtW and network flooding.
Structural failure resulting in injury.
SSB and PCI
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
E9 Area: Salford City Community Stadium - South Stand
Hazard: Tunnelling in close proximity to Salford City
Community Stadium - South Stand
Risk: Ground movement or vibration resulting in
instability, structural defects, partial or full
structural failure.
Note: South stand founded on ground bearing
slab. Only north stand is founded on piles..
Action: Obtain records. Undertake pre- and
post- construction structural assessments as
appropriate. Undertake GI and other SI to
obtain relevant information to be able to design
and undertake tunnelling works in a manner to
minimise vibration and ground movement.
Avoid affecting structures by design if possible.
Provide sufficient working space around
structures to avoid impact damage or
undermining and provide sufficient space in
case surface intervention to TBM is required.
Undertake appropriate monitoring during the
works. Set allowable settlement and vibration
limits.
Available records obtained and included in SSB
and PCI.
Appropriate GI undertaken.
Tunnel located as far away from stadium that
site restrictions will allow.
Sufficient space provided to construct works
without inevitable damage to stadium.
Preliminary ground movement analysis
undertaken to determine impact of tunnel/shaft
works on stadium.
Pre construction condition surveys of stadium to
be undertaken.
Ground movement and vibration limits for works
adjacent to properties stated in SSB.
Appropriate ground movement and vibration
monitoring specified requirement in SSB.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
Greater than expected ground movements and vibration
leading to damage to stadium and associated
consequences.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
F1 Area: All working areas and structures within defined
floodplain
Hazard: History of flooding from watercourses and
potential flooding from MSC
Risk: Inundation, injury, drowning. Implications
on flotation of pipelines and structures. Pollution
and contamination of floodwaters by
construction materials, fuels etc..
Action: Obtain flood risk data from EA. Include
data in PCI and design criteria
Flood mapping and level data obtained from EA
for Salteye Bk and MSC and included in PCI and
SSB.
Flotation design requirements included in PSD.
Site to manage and control water egress into
working areas
Significant
S
29/10/2013
23/06/2015
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Visitors
Public
Inundation of excavations and working areas. Unexpected
groundwater during construction/tunneling
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
DG5053/80023696/01/01/20102
DG5053/80023696/01/11/20111
DG5053/80023696/01/09/20103
DG5053/80023696/01/09/20104
DG5053/80023696/01/14/20107
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
F2 Area: Properties on DG5 register on Peel Green Road.
Hazard: History of flooding from sewer network
Risk: Inundation, injury, drowning. Implications
on flotation of pipelines and structures.
Disease/infection from sewage contaminated
floodwater.
Action: Obtain flooding records. Obtain flooding
and surcharge data from UU network modelling
team. Include data in PCI, SSB and design
criteria.
Provide data on flood defences (Note Peel
Green Rd DG5 properties protected by earth
flood bund and NRV).
Water level and flow data obtained from
hydraulic modelling.
DG5 flood risk data obtained and mechanism of
flooding confirmed.
Ex Flood bund to remain in place until all
downstream improvements made or maintain an
equivalent form of mitigation crest of existing
bund at 19.35m AOD
Design to include 1:30 yr event emergency
storage in the event of total power failure as no
e/o.
FRA undertaken as combined flows discharge to
WwPS confirming requirement for emergency
storage.
Significant
S
29/10/2013
10/06/2014
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Visitors
Public
Inundation of excavations and working areas.
Flooding of properties and carriageway. Unexpected
groundwater during construction/tunnelling
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
DG5053/80023696/01/01/20102
DG5053/80023696/01/11/20111
DG5053/80023696/01/09/20103
DG5053/80023696/01/09/20104
DG5053/80023696/01/14/20107
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
F3 Area: MSC - tunnelling, shaft and outfall construction
Salteye Brook - tunnel construction
Former sludge lagoon - excavations at toe of bund and
surveying
Hazard: Watercourses, reservoirs, rivers, canals, lakes,
lagoons
Risk: Injury, drowning. Inundation of
excavations. Unstable excavations. Rapid
variations in water table. .
Action: Avoid working immediately adjacent to,
or within, water bodies. Provide adequate
space within working areas next to water
bodies. Provide information on water bodies
within PCI. Avoid works that will affect stability
of banks or retaining structures. If this is not
practicable ensure works do not adversely
affect stability of banks or retaining structures.
Monitor weather and water levels on a regular
basis.
Provide appropriate rescue and working
apparatus.
Water bodies noted on dwgs.
Sufficient working space provided to avoid
immediately adjacent to water bodies (except
where crossing or connection to water body
required).
Flow and level data obtained from EA for
Salteye Bk and MSC and included in PCI and
SSB.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Injury, drowning
Falls from height into water, slips and falls on steep banks
Inundation of excavation through or adjacent to water
bodies
SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1002
F4 Area: Tunnel crossing of Salteye Brook
Formation of outfall to MSC (diving operations)
Hazard: Strong underwater currents and differential
pressures
Risk: Injury, drowning.
Strong currents may be present downstream of
Barton Locks due to operation of locks and
sluices and flows entering MSC from Salteye
Brook.
Differential pressures may be present
downstream of Barton Locks due to operation
of locks and sluices.
Action: Engagement with MSC Operations
Team.
Monitor weather and water levels.
Monitor operation of locks and sluices
Flow and level data obtained from EA for
Salteye Bk and MSC and included in PCI and
SSB.
Records of MSC locks and Salteye Outfall
obtained and included in SSB/PCI
Liaison with MSC re works within MSC
Undertake works in accordance with UU
approved diving procedures (incl in SSB) and
MSC requirements
Significant
ADD F5
S
29/10/13 D Sephton - Civil Engineering Contractors Flow and level data obtained from EA for Salteye Bk and
MSC and included in PCI and SSB.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
F5 Area: Final tanks and storm tanks
Hazard: Open storage tanks
Risk: Falls into tanks, injury, drowning.
Action: Provide info in PCI and design working
areas to avoid open tanks. Provide adequate
fencing to working areas adjacent to tanks.
Working areas designed to exclude open tanks
Contrcator to provide adequate fencing and
manage risk through site procedures.
Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Falls, injury, drowning PCI/SSB
G1 Area: WwtW and upstream properties
Hazard: Removal of existing 3300x2200 culvert and
supporting piles to allow tunnel S2 - S3 to be
constructed. Measures for dealing with storm flows must
be in place.
Culvert cannot be abandoned until flows can be turned
into outfall tunnel.
Risk: Inundation of excavations, existing
WwTW and flooding upstream.
Injury, drowning.
TBM becoming 'stuck' if piles not removed
potentially resulting in over-excavation and
settlement/collapse of culvert structure above.
Unplanned surface intervention required to
remove piles..
Action: Temporary diversions, construction of
d/s sections of new outfall first. Constraint in
SSB
Hydraulic modelling undertaken to confirm that
flows within culvert can be temp diverted to new
2000NB in WwTW without increase in water
levels u/s.
Sequence of construction constraint included in
SSB
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
UU Operatives
Visitors
U/s flooding if temp diversion of flows is inadequate or not
in place when culvert broken.
PCI/SSB
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
G2 Area: New SAL0018 CSO structure and Shaft 01
Hazard: Restricted working space at Shaft 01 working
area - insufficient space to construct shaft and
CSO/pipework concurrently
Risk: Injury due to confined working area,
damage to adjacent properties or M'way slip
road..
Action: Programme the work sto take into
account restricted working area.
Constructability review undertaken.
Maximum working area provided
Works programmed to construct shaft and CSO
in sequence.
Low 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Impact injuries, access issues and unstable excavations if
works undertaken concurrently.
PCI and SSB
G3 Area: All new assets.
WwTW
Upstream properties
Hazard: Connections of existing sewer network to new
sewers, pipelines, shaft sand tunnels
Risk: Flooding, injury, drowning and pollution..
Action: SAL0018 CSO - flows at new SAL008
shall not be able to discharge to new tunnels
and shafts until all tunnels and shafts complete.
Eccles WwTW - storm and final effluent flows
shall not be able to discharge to new tunnels
and shafts until all tunnels and shafts complete.
Peel Green Rd (1200NB) - flows shall not be
able to discharge to new pipework until all
downstream, pipework, tunnels and shafts
complete.
Peel Green Rd WwPS - discharge bellmouths
set at design levels. Connection of discharge
pipework to ex sewers shall not be made until
all downstream, pipework, tunnels and shafts
complete.
Constraints included in SSB. Flow data
provided. Site to review the temporary works
requirements and provide a safe system of work
Significant
S
29/10/2013
23/06/2015
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
Public
UU Operatives
Visitors
Flooding if works not correctly programmed and measures
undertaken to prevent flows discharging to new works out
of sequence.
PCI and SSB
SAL0018/80023696/01/12/21030
SAL0018/80023696/01/12/21040
SAL0018/80023696/01/12/21041
SAL0018/80023696/01/12/21042
Y N
G4 Area: New SAL0018
Eccles WwTW Inlet CSO
Hazard: Installation of new screens
Risk: Increase in water levels leading to
flooding, injury drowning.
Damage to new screens
Pollution.
Action: New SAL0018 - flows can only be
turned into new chamber (c/w new screens)
once all outfall tunnels etc that convey spill
flows are completed
Ex WwTW Inlet CSO - screens can only be
installed once all downstream pipelines,
culverts, shafts, tunnels, etc are completed.
Constraints included in SSB Low 29/10/13 D Sephton - Civil Engineering Contractors
Public
UU Operatives
Visitors
Flooding and damage to screens if works not correctly
programmed and measures undertaken to prevent flows
discharging to new works out of sequence.
PCI and SSB
G5 Area: All new tunnels and shafts.
Upstream properties and WwTW
Hazard: Formation of outfall channel and connection of
new outfall tunnel to MSC.
Risk: Rapid inundation, injury drowning.
Upstream flooding. Pollution..
Action: All tunnelling works and shaft fit shall be
completed prior to forming connection to MSC.
Shaft 04 stop gates shall be fully tested and
commissioned prior to forming connection to
MSC.
Constraints included in SSB medium 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Rapid inundation of shafts and tunnels if adequate
measures not taken to prevent MSC water entering works.
Injury, drowning.
PCI and SSB
G6 Area: Shaft 01 working area
Hazard: Access off M60 JN11 roundabout not available
until all WGIS JN11 improvement works have been
completed.
Risk: Increased risk of collisions, injury without
roundabout improvements..
Action: Programme works to take into account
completion date for WGIS Jn11 works.
Constraint included in SSB medium 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
Access off roundabout not acceptable to SCC/UV until
improvement works complete. Access would be unsafe
without improvements to r'bout.
PCI and SSB
H1 Area: Shaft 04/Outfall access.
Hazard: Rights of Way
Risk: Conflict with PROW users resulting in
injury..
Action: If practicable use alternative
routes/working areas avoiding PROW.
Provide PROW diversion.
Manage interface between vehicles and PROW
users.
No practical alternative route available.
Constraint and requirement to manage
pedestrian crossing included in SSB and PCI
medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
PROW users not following advisory signage re
construction traffic or construction vehicles not adhering to
site rules resulting in impact injuries
PCI and SSB
H10 Area: Shaft 01 and Shaft 02 working areas
Hazard: Traffic flows and speed - M60
Risk: Shaft 01/Shaft 02 working areas sited
next to M60 JN11.
Access to working areas required off M60 Slip
roads.
Tunnelling under M60 will require monitoring of
carriageway settlement and access to assets
with access points on slip roads
Access to M60 may only be possible during
nightime
Risk of collisions, accidents, injuries. .
Action: Consultation with HA/BBMM re access
off slip roads and access to M60 for surveying.
Comply with HA/BBMM requirements and
obtain necessary approvals.
Appropriate traffic management and use of Sch
12 TM contractors for TM on M60.
Site to provide adequate barriers; access and
egress ways as agreed with planning authority
Significant
S
29/10/2013
10/06/2014
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
UU Operatives
Visitors
Public
Impacts with other vehicles and pedestrians. Restricted
access. Man/machine access
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1003
SAL0018/80023696/01/01/11010
SAL0018/80023696/01/01/11011
SAL0018/80023696/01/01/11012
SAL0018/80023696/01/01/11013
SAL0018/80023696/01/12/21030
SAL0018/80023696/01/12/21040
SAL0018/80023696/01/12/21041
SAL0018/80023696/01/12/21042
SAL0018/80023696/01/11/21029
Y N
H11 Area: Shaft 04 working area access
Hazard: Traffic flows and speed - A57 (Barton)
Risk: Shaft 04 access off 50mph limit dual
carriageway is existing access to Barton Locks.
Construction vehicles slowing down to enter
access and slow vehicles turning out of access
onto carriageway. No dedicated lanes for
speeding up/slowing down.
Restricted sight lines.
Risk of collision, injury..
Action: Consultation with highway authority.
Comply with highway authority requirements
and obtain necessary approvals.
Use of appropriate traffic management.
Obtain temporary order to restrict speed limit on
road.
Undertake improvements to access and
improve sight lines.
Consultation with BBMM to understand
restrictions on access to M60.
All access to M60 to be agreed with BBMM.
All carriageway/structure monitoring to be
agreed with BBMM to ensure it does present a
hazard to road users.
Requirements relating to M60 access included in
SSB.
Significant 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Impacts with other vehicles and pedestrians. SSB and PCI
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
H12 Area: WwtW, Shaft 01, Shaft 02, Peel Green Rd
Hazard: Parking facilities or restrictions
Risk: Limited available parking space for
construction operatives vehicles within working
areas or on adjacent residential streets.
Parking vehicles may reduce visibility, access
etc with an increase risk of collision, injury or
damage to 3rd party property.
.
Action: Impose no parking restrictions on
operatives vehicles within residential streets
Provide adequate parking at main WwTW
compound
Investigate 'bussing' operatives to satellite work
areas from main WwTW site compound
Restricted space included as constraint in SSB.
Requirement for no parking and bussing
operatives to site included as a requirement in
SSB.
low 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
Impacts with other vehicles and pedestrians.
Adverse publicity
SSB and PCI
H13 Area: Shaft 01, Shaft 02, Peel Green Rd
Hazard: Restricted access to Residential Properties
Risk: Residents unable to access properties on
foot or with wheelchairs etc.
Residents unable to access properties to park
vehicles etc
Residents unable to access properties to
undertake maintenance, refuse removal etc
Emergency services unable to access
residential properties.
Risks of injury, accidents, public health issues,
damage to 3rd party property.
.
Action: Design working areas maintain
pedestrian and vehicular access to front and
rear of properties.
Where this is not practicable maintain
pedestrian access and make appropriate
alternative arrangements for parking and refuse
collections.
Liaise with residents to understand their
requirements (disabilities, elderly, young
children etc).
Ensure access is suitable (ie for disabled, push
chairs etc).
Liaison with residents to determine special
access requirements.
Requirements to maintain access included as
constraint within SSB.
Works designed so that working areas can be
configured to maintain access.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
Residents unable to access properties.
Risk of injury to residents if access not properly considered
or segregated from working areas.
Adverse publicity
SSB and PCI
H2 Area: Access to Shaft 01 working area
Hazard: Common access - Shaft 01 Alleyway
Risk: Collision with pedestrians or residents
using alley for pedestrian or vehicular access.
Injury or damage to property/vehicles..
Action: Provide more suitable alternative
access.
Limit number of construction vehicles using
access.
Instigate vehicle control measures as
appropriate.
SCC/UV/HA/BBMM consulted and main
access/egress to be via JN 11 roundabout and
A57.
Night-time deliveries via slip road.
Construction vehicles using alleyway only to use
alleyway for accommodation works.
Constraints included In SSB and SSB
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Impact with pedestrians or resident's vehicles. Damage to
property walls bounding alleyway.
PCI and SSB
H3 Area: Shaft 04/Outfall access.
Hazard: Common access - Shaft 04 access
Risk: Access may be shared with MSC
operatives accessing Barton Locks and 3rd
party contractors engaged in Port Salford
development.
Collision, injury..
Action: Liaise with MSC operations team.
Liaise with Port Salford development team and
contractors.
Instigate vehicle control measures as
appropriate.
Constraint included in SSB with requirement for
contractor to manage shared access.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Impact with other vehicles using access. PCI and SSB
H4 Area: Eccles WwTW
Hazard: Common access - Eccles WwTW
Risk: Access shared with UU operatives and
staff with increased risk of collision, injury.
Crossing of existing culverts and structures with
WwTW - possible weight restrictions (see
Adjacent Structures section above)..
Action: Liaise with WwTW management.
Instigate vehicle control measures as
appropriate.
Constraint included in SSB. Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
UU Ops
Impact with other vehicles and pedestrians using access. PCI and SSB
H5 Area: Shaft 01 working area
Hazard: Access limiting conditions - Shaft 01 working
area.
Risk: Residential roads/alleyway not suitable for
construction access.
Collision, injury, damage to roads and 3rd party
property.
Alleyway not suitable for large maintenance
access vehicles (ie Disab)..
Action: Agree access of M60 slip road, Jn11
roundabout and egress to A57 with HA/BBMM
(ASC)/SCC/UV.
Comply with requirements of 3rd parties.
Develop construction traffic
routing/management plans
Develop and implement proposals for safely
diverting or managing pedestrians at interfaces
with construction traffic
SCC/UV/HA/BBMM consulted and main
access/egress to be via JN 11 roundabout and
A57.
Night-time deliveries via slip road.
Construction vehicles using alleyway only to use
alleyway for accommodation works.
Constraints included In SSB and SSB
Road Safety Risk assessments undertaken by
specialist highway engineering consultants for
access off roundabout and management of
pedestrian interfaces
Site designed for future maintenace
requirements
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
Impacts with other vehicles and pedestrians. SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
H6 Area: Shaft 02 working area
Hazard: Access limiting conditions - Shaft 02 working
area.
Risk: Residential roads linking Peel Green Rd
and Liverpool Rd with the working area are
relatively narrow with restricted turning space at
junctions.
Significant on-street parking and roads
designated as 'Play Streets'.
Risk of collision, injury, damage to roads and
3rd party property.
Deliveries of large items of plant/materials will
not be feasible through the residential streets.
Action: Autotrack plant movements around
streets to confirm whether access possible.
Consider access of M60 slip road or through
WwTW for construction access
Instigate appropriate construction vehicle
management/routing plans.
Constraints included in SSB
Undertaken an assessment of alternative
accesses in conjunction with SCC/UV.
Confirmed local roads the only viable access.
Agreed access route TM proposals with
SCC/UV to ensure construction vehicles can
access site safely.
Undertaken consultation with local residents re
TM and construction access
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Impacts with other vehicles and pedestrians. SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1003
H7 Area: Shaft 01 and Shaft 02 working areas. Salteye
Brook Culverts. SAL0018 CSO
Hazard: Exceptional loads.
Risk: Some plant required to construct the
works may be considered to be exceptional (eg
cranes, TBM etc).
Some materials required for the works may be
considered to be exceptional (eg shaft roof
slabs).
Access through the residential streets serving
the working areas will be feasible.
Risk of collision, injury, damage to roads and
3rd party property..
Action: Select/design plant and design works to
take into account restricted access.
Identify alternative access to working areas for
exceptional items (eg M60 slip roads). Consider
precast panels for the CSO roof slab
Consultation with HA ASC (BBMM). Agreed that
exceptional loads can be delivered to sites via
slip roads under full closure of slip roads (full
closure for safety reasons) at night-time.
Constraints on access included in SSB.
Constructability review undertaken.
S/C confirmed that access of slip roads
sufficient for large deliveries and TBM
removal/delivery by crane.
SSB includes BBMM requirements for slip road
closure and traffic movements. Roof Slab
Panels to be cast as precast on site as
manageable weights. Site to review the
Significant
S
29/10/2013
10/06/2014
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
Visitors
Public
Impacts with other vehicles and pedestrians. Weight Limit
over Salteye Brook when accessing Shaft 04 is 300 tonnes
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1003
SAL0018/80023696/00/98/1001
SAL0018/80023696/01/01/11012
Y N
H8 Area: Shaft 01 working area (M60 JN11) and Shaft 04
working area (A57) accesses.
Hazard: Poor sight lines
Risk: Increased risk of accidents, injuries..
Action: Design site access to provide adequate
sight lines.
Engage specialist highways/traffic engineering
consultants in the design of accesses
Liaise with local highway authority and comply
with their requirements
Consider whether risk can be mitigated through
traffic management measures.
Requirement to maintain existing sightlines at S1
and S2 included as constraint in SSB.
Specialist highway engineering consultants
engaged to confirm sightlines at A57 Shaft 04
access.
Planning and contract docs prepared to ensure
that sufficient working area provided and
tree/hedge removal undertaken to give required
sightlines.
A57 sightline requirements included as
constraints and design requirements in PSD and
SSB
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Impacts with other vehicles and pedestrians. SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
H9 Area: Shaft 01, Shaft 02, Shaft 03, Surcharge relief
chamber (WwTW), Eccles Inlet CSO, New SAL0018,
Peel Gn Rd WwPS, Shaft 04/MSC outfall
Hazard: Permanent or temporary lifting arrangements /
hooks etc.
Risk: Insufficient space for plant required for
pump removal.
Insufficient space for plant required for man
rider basket use.
Insufficient space for maintenance vehicles to
manoeuvre.
Unsuitable surfaces for setting up lifting
equipment.
Risk of collision, injury, damage to roads and
3rd party property.
Unable to maintain assets regularly and safely..
Action: Determine weights of pumps, screens,
stop gates, man riding baskets, valves etc and
confirm craneage requirements.
Determine whether mobile cranes etc can
access assets - Autotrack vehicles
Confirm with UU Ops lifting requirements.
Consider man access requirements and
whether 2 no. man rider access is required.
Consider planning implications for access
arrangements.
ALM and HAZOP undertaken
Maintenance philosophy for shafts and tunnels
developed.
Type and size of maintenance vehicles
determined
Maintenance vehicle access incorporated into
design.
Sufficient space provided for vehicles to access,
turn and park within design (checked with
Autotrack)
Loading requirements on structures for
maintenance vehicles included in PSD
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Unable to maintain assets properly if maintenance access
requirements not carried through detailed design
Impacts with other vehicles and pedestrians if insufficient
space or adequate access provided.
SSB, PCI, HAZOP, ALM, Maintenance
Philosophy
J1 Area: All working areas.
Hazard: Events:
Rugby matches at Salford City Stadium
Football matches and other events at Etihad Stadium
and Old Trafford
Events at MEN
Christmas shopping at Trafford Centre
Risk: Significant increase in pedestrian and
vehicle flows.
Embargoes imposed on closures or roadworks
on M60 and A57.
Increase in on-street parking.
Increased risk of accidents, injuries, delays to
construction vehicles accessing the sites.
Access arrangements to sites may not be
available..
Action: Obtain details of events and embargoes
from relevant authorities/organisations.
Ensure working areas adequately
fenced/secure.
Included as constraint within SSB.
Continued liaison with SCC/UV, BBMM and
police re events and embargoes
Low 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
Public
Residents unable to access properties.
Risk of injury to residents if access not properly considered
or segregated from working areas.
Adverse publicity
SSB and PCI
J10 Area: SAL0018, Rooke St
Hazard: Delivery of materials to site; lack of turning
space
Risk: Limited space at SAL0018 and Rooke St -
accidents, injury damage to property.
Action: Design, where possible to allow
deliveries to enter and exit sites without turning.
If turning required make sure there is sufficient
space for safe turning.
S1 and S2 access designed to allow vehicles to
enter, exit and load/unload. Checked available
space using autotrack.
Constructability review undertaken, including
review by specialists consultants and sub-
contractors.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Risk of impact with other vehicles, operatives and
pedestrians
SSB and PCI
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
J2 Area: Eccles WwTW, M60 and local road network,
existing sewer network, Barton Locks
Hazard: Operation & Maintenance of existing assets
Risk: Restricting on-going UU Ops activities on
WwTW resulting in failure of equipment and
failing to meet WQ standards. Increased risk of
flooding and pollution.
Restricting access for UU Operations to
existing sewer network for
maintenance/inspection resulting in increased
risk of flooding and pollution.
Restricting access for MSC operatives to
Barton Locks resulting in disruption to shipping
and increased risk of flooding
Restricting access for motorway maintenance
operatives resulting in failure of
communication/lighting systems with associated
increased risk of accidents..
Action: Liaise with affected 3rd parties to
understand requirements.
Design working areas to allow access.
Include for access provision with contract
documents.
Requirement to maintain MSC access included
as constraint within SSB
Low 29/10/13 D Sephton - Civil Engineering Contractors
3rd party
operatives
MSC operatives unable to operate locks and sluices with
potential consequences for flood risk and vessel
movements
SSB and PCI
J3 Area: Shaft 01 working area
Hazard: Inter-dependence with others
Risk: Access to working Shaft 01 working area
will not be available until M60 JN11 WGIS
works are complete. Possible delays to works..
Action: Liaison with WGIS contractor and
highways authority.
Liaison with WGIS contractor to determine when
works complete.
Included as constraint within SSB
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Unsafe access if agreed access arrangements are not
adopted by contractor.
SSB and PCI
J4 Area: Shaft 01 working area, Shaft 04 working area and
Peel Green Rd
Hazard: Inter-dependence with others
Risk: Diversion of services in order to construct
works..
Action: Liaison with statutory undertakers
Liaison and consultation with statutory
undertakers.
Assessment of services that will require
diversion for permanent works or diversion or
replacement to construct works.
Included as constraints within SSB
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Damage to service apparatus if appropriate diversion,
protection or replacement is not undertaken prior to works
commencing.
Delays to works if diversion, protection or replacement not
identified early and undertaken to meet programme.
SSB and PCI
J5 Area: Shaft 01, Shaft 02 and Peel Green Rd working
areas
Hazard: Neighbouring properties
Risk: Residential properties immediately
adjacent to Shaft 01, Shaft 02 and Peel Gn Rd
working areas.
Properties are at risk of noise, dust, vibration,
ground movement, night-time working, impact
from plant, restricted access and restricted
parking.
Refer to other specific items covering these
hazards..
Action: Refer to other specific items covering
these hazards.
Refer to Items C2, C3, C9 & E2 . Site to provide
adequate barriers. Monitor vibration and noise
levels as agreed with planning authority
Medium 29/10/2013
23/06/2015
D Sephton - Civil Engineering
Lloyd Chapeyama Civil
Engineering
Contractors
Public
Visitors
Refer to Items C2, C3, C9 & E2 Man/mcahine interface;
Movement of plant above and below ground; Access and
egress; restricted working areas; Interaction with
public/traffic
SSB and PCI
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
J6 Area: Eccles WwTW FE culvert
Hazard: Works Authorisations / Isolation interfaces /
restricted operations - WwTW FE
Risk: Flows in FE culvert can be temporarily
stopped using storm tanks and re-circ PS. This
facility may be required to undertake works on
FE culvert. If not controlled by UU Ops then
there is a risk of the failure of the treatment
process, increased risk of flooding, risk of
pollution and risk of inundation of excavations..
Action: Agree procedure with UU Ops and
include in SSB
Facility to temporarily stop FE flows discharging
via FE culvert included in SSB.
Continued liaison with WwTW process controller
to determine when flows can be stopped.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
UU Ops
Risk of flooding and malfunction of works if FE discharges
stopped at wrong time or for too long.
SSB and PCI
J7 Area: Eccles WwTW and all sewer network assets
Hazard: Works Authorisations / Isolation interfaces /
restricted operations - access to sewerage network
Risk: UU procedure for accessing UU assets
should be followed with authorisations signed
off by relevant UU Ops representative. Failure
to following procedure could lead to injury,
drowning, electrocution, entanglement in mech
plant..
Action: Agree procedure with UU Ops and
include in SSB
Requirements for access to assets included in
SSB and PCI
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
UU Ops
Risk of malfunction of assets. Injury, drowning, explosion,
asphyxiation if procedures not followed.
SSB and PCI
J8 Area: WwTW, Shaft 01 working area, tunnel S3 - S4,
Shaft 04/Outfall, new 2000NB sewer below WGIS rd
Hazard: Other Contracts:
Risk: Potentially other contracts on going in
close proximity:
Peel Holdings - WGIS road west of WwTW
boundary and at JN11 M60
Peel Holdings/Salford development of site to
west of M60
Highways Agency - M60 Managed M'way
Service diversion contracts for the UID scheme,
Port Salford and WGIS
All will involve works being undertaken
concurrently, and in close proximity to the UID
scheme works. Increased risk of injuries or
damage to works due to loading or impacts
from 3rd party construction plant..
Action: Liaison with 3rd parties.
Effective programming where possible to avoid
conflict with other schemes
Include constraints within SSB
Presence of other nearby construction contracts
included in SSB and PCI.
Continuous liaison with contractors and clients
to determine restrictions, programme and
working and design requirements.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Public
Impacts with other contractors vehicles and operatives.
Design impacts of other works not incorporated into UID
works.
Design/construction requirements of UID works not
incorporated into other schemes.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
J9 Area: All work areas.
Hazard: Aeroplanes or flight paths
Risk: Barton aerodrome to west of site - all sites
potentially on flight path.
Risk of planes/helicopters colliding with jibs on
cranes..
Action: Liaison with Aerodrome re any specific
requirements or restrictions.
Under Civil Aviation law, companies and
contractors who need to operate cranes and
lifting equipment within 6 km of an aerodrome
boundary, at heights of more than 10 metres
above ground level (AGL) or that of surrounding
structures or trees, if higher, must receive prior
permission from the aerodrome operator.
Follow HSE guidance on works below flight
paths.
Inform Barton Aerodrome of works
Included as constraint within SSB.
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
Public
Aircraft
Impacts of aircraft with crane jibs SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
K1 Area: Existing incoming 1980mm brick barrel sewer, spill
structure and CSO chamber
Ex sewers and chambers on WwTW and within Peel
Green Rd
Internal column access in piers on Barton HLB
Hazard: Existing confined spaces?
Risk: Entrapment, suffocation, explosions, fire,
drowning.
Action: provide exiting means during an
emergency, ventilation, adequate lighting and
PPE
Requirement to follow UU procedures for
entering confined spaces on ex sewer network
included in SSB/PCI.
Entry to Barton HLB columns to be agreed with
HA/BBMM. Alternative access to be used if
available.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Flooding, malfunction of assets, injury, drowning,
asphyxiation if approved procedures are not followed.
SSB and PCI
K2 Reference not used on HIC No information for this reference Undertaken HAZOP and ALM
Maintenance Philosophy prepared for Shafts
and Tunnels
Design of pipelines and chambers in accordance
with UU Standard Details, Sig Designs and
UU'Designing for Safety'
Significant (for deep shafts and tunnels)
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Flooding, malfunction of assets, injury, drowning,
asphyxiation if approved procedures are not followed.
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
L1 Area: Shafts, CSO chamber, manholes
Hazard: Ex and new deep shafts and chambers
Risk: Falls, injuries.
Action: Follow approved access procedures for
ex assets
Design out where possible.
Design to UU 'Designing for Safety' for barriers,
access etc
HAZOPs
Provide maintenance plan for non-standard
deep shafts
Requirement to follow UU procedures for
entering confined spaces on ex sewer network
included in SSB/PCI.
Undertaken HAZOP and ALM
Maintenance Philosophy prepared for Shafts
and Tunnels
Design of pipelines and chambers in accordance
with UU Standard Details, Sig Designs and
UU'Designing for Safety'
Significant (for deep shafts and tunnels)
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Flooding, malfunction of assets, injury, drowning,
asphyxiation if approved procedures are not followed.
Confined Spaces working within the proposed 1800 sleeve
pipe at Peel Green Road
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
L2 Area: Barton High Level Viaduct - Installing and
Maintaining Monitoring. Bridge Assessment inspections.
Hazard: Barton High Level Viaduct
Risk: Falls, injuries.
Action: Follow approved HA & BBMM access
procedures access to bridge for inspections
and installing monitoring instrumentation.
Manage access through RAMS
Obtained bridge records from HA.
Access onto bridge only via designated access
routes with RAMS approved by BBMM/HA/GCA.
Access to inspect bridge using MEWP only with
RAMS approved by BBMM/HA/GCA
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
Public
Falls, injury SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
N1 Area: Eccles WwTW, Shaft 01, Shaft 02, Shaft 04 and
Peel Green Rd
Hazard: Security system /existing security concerns
Risk: Unauthorised entry onto the site, potential
for injuries, damage and theft.
Action: Review of ex security arrangements,
gates and fencing appropriate for level of risk of
unauthorised entry
Vandalism/unauthorised entry discussed with
WwTW manager and ops.
Significant unauthorised entry & theft risk
included in SSB/PCI
Requirement for gateman at WwTW included in
SSB.
Requirement for appropriate fencing included in
SSB/PSD.
Kiosks at S1 and PGR to be steel as opposed to
GRP
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Public
Unauthorised entry onto site, vandalism, theft, injury, delay. SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
N2 Area: Eccles WwTW, Shaft 01, Shaft 02, Shaft 04 and
Peel Green Rd
Hazard: Vandalism
Risk: Potential for injuries, damage and delays
to programme.
Action: Review of ex security arrangements,
gates and fencing appropriate for level of risk of
vandalism
Vandalism risk stated in SSB/PCI
Requirement for gateman at WwTW included in
SSB.
Requirement for appropriate fencing included in
SSB/PSD.
Kiosks at S1 and PGR to be steel as opposed to
GRP
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Public
Unauthorised entry onto site, vandalism, injury, delay. SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
N3 Area: All work areas.
Hazard: Are services available for use by the contractor?
(e.g. Sewer, power, water connections
Risk: Injury, Diseases.
Action: Contact service providers and make
arrangements for provision of connections.
Requirements for each working area discussed
with GCA and tunnel s/c.
Service records obtained and service providers
contacted by UU re specific requirements
directly relating to construction (not welfare):
Shaft 03 - temporary power supply for TBM
All shaft locations - water supply
Statement in SSB that contractor responsible for
site service connections
Low 29/10/13 D Sephton - Civil Engineering Contractors
Visitors
UU Operatives
Injury, infections, diseases
N4 Area: Eccles WwTW and Salford City Stadium
emergency access/egress to rear of stadium (across
tunnel line)
Hazard: Have fire assembly access routes been
accommodated
Risk: Injury, closure of facilities.
Action: Ensure that working arrangements
accommodate all known emergency access
routes
Emergency access/egress and fire assembly at
WwTW determined and requirement not to
affect in SSB/PCI.
Tunnel route S3 - S4 passes below emergency
egress/access to Salford Stadium. If a surface
intervention is required then access must be
maintained to ensure that the Stadium can
continue to operate. requirement stated in
PCI/SSB
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors
Public
Injury. Stadium unable to operate unless emergency route
is available at all times.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
P1 Area: All work areas.
Hazard: Biological Hazard
Risk: Working in live sewers - leptospirosis.
Action: Avoid working in live sewers where
possible
Use appropriate PPE.
Requirements to sequence work off-line within
SSB.
Hazards highlighted in PCI.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Leptospirosis and other diseases/infections
P2 Area: All work areas.
Hazard: Burning or cutting
Risk: Injury.
Action: Consider use of non-manual methods
Use appropriate PPE
Non at design stage Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Injury
P3 Area: All work areas.
Hazard: Manual Handling - heavy building elements
Risk: Muscular skeletal injury.
Action: Consider use of non-manual methods
Design out manual handling issues where
possible both in construction and operation of
permanent works
HAZOP and ALM undertaken.
Design incorporates features to allow pumps to
be removed from shafts by crane or A-frame.
Hardstanding provided for cranes, set-down
areas and parking to remove the requirement for
manual handling.
low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Muscular skeletal Injury
P4 Area: All work areas.
Hazard: Noise
Risk: Diseases - long term hearing impairment .
Action: Consider use of low noise methods (eg
Giken piling)
Use appropriate PPE
Requirement within SSB for 'Giken' type piling at
S1 and S2 locations to reduce noise adjacent to
residential properties.
Use of appropriate PPE
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Public
Visitors
Long term hearing impairment.
Adverse publicity
P5 Area: All work areas.
Hazard: Vibration
Risk: Diseases - vibrosis .
Action: Consider use of low vibration methods
(eg Giken piling, mechanised breaking
equipment)
Use appropriate PPE
Mechanised tunnelling techniques to be
adopted.
Requirement within SSB for 'Giken' type piling at
S1 and S2 locations to reduce vibration adjacent
to residential properties.
Use of appropriate PPE
Medium 29/10/13 D Sephton - Civil Engineering Contractors
Public
Visitors
Vibrosis
Adverse publicity
P6 Area: All work areas.
Hazard: Dust and fibres
Risk: Diseases - lung infection.
Action: Use appropriate PPE
Inclusion of landscaping bunds at WwTW to
retain spoil on site and reduce no. of vehicle
movements through residential streets.
Use of appropriate PPE and site procedures
Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Public
Visitors
Disease, lung infections
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
P7 Area: All work areas.
Hazard: Fumes
Risk: Diseases -eye and lung infection.
Action: Use appropriate PPE
Consider alternatives to equipment that
produce fumes (eg fixed power supply)
Fixed TBM power supply at shaft 03 removes
need for site generated power.
Use of appropriate PPE and site procedures.
Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Public
Visitors
Diseases, eye and lung infections
Q1 Area: Eccles WwTW - Flies on filter beds
Hazard: Insects
Risk: Diseases.
Action: Appropriate PPE and welfare
procedures
Fly issue highlighted in SSB.
Process controller to be informed to confirm
correct levels of treatment being applied to kill
off flies.
Use of appropriate PPE
Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Public
Visitors
Disease, infections
R1 Area: All works area - chambers and sewers to be
abandoned
Hazard: Foamed concrete
Risk: production of explosive gasses.
Action: Assess use prior incorporation within
works
Risk highlighted on HARMS.
Use of foamed concrete with incinerator bottom
ash aggregate (IBAA) to be reviewed by detail
design team on site specific basis.
Follow HSE guidance on use of foamed
concrete
Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Public
Visitors
Explosion
R2 Area: Outfall structure
Hazard: Diving Operations
Risk: Drowning, muscular skeletal injuries from
impacts or differential pressures.
Action: Avoid diving operations where possible
through design.
Plan dives correctly and follow UU standard
guidance on diving ops.
Obtain relevant information on hazards within
water bodies - ie sluices, underwater currents,
vessels
Records of lock and outfall structures obtained
from MSC and EA.
Current UU diving procedures included in SSB.
Requirement for all diving within MSC to be
approved by MSC.
Contractor to liaise with MSC re lock operation
and vessel movements.
Current outfall design minimises diving
operations but these will still be required as
outfall is submerged below MSC TWL
Significant
S
29/10/13 D Sephton - Civil Engineering Contractors Drowing, injury form impact or differential pressures and
underwater currents
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
R3 Area: All work areas.
Hazard: Hot works
Risk: Injury, fire.
Action: Avoid hot works where possible.
Plan works and use appropriate PPE
Use of PPE Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Public
Visitors
Injury, burns, fire, explosion
R4 Area: All work areas.
Hazard: Projecting elements e.g.fish tail anchors
Risk: Injury.
Action: Appropriate PPE and
warning/demarcation of projecting elements
Appropriate PPE and de-marcation/warning Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Injury
R5 Area: All work areas.
Hazard: Waste removal
Risk: Land contamination ,pollution of
watercourses and groundwaters.
Contact with hazardous substances, ingestion,
inhalation, absorption leading to infections.
Action: Appropriate GI, assessment of
materials to be excavated.
Put in place SWMP, MMP and ECP.
Use of appropriate excavation methods and
use of appropriate PPE
GI undertaken
ISWMP prepared
ICSM prepared
LQRA and DQRA prepared and submitted to
EA/LPA and approved.
RMS for landscaping bunds prepared and
submitted to EA/LPA and approved.
Requirement within SSB for GCA to prepare
MMP (to be approved and signed off by QP),
ECP and Verification report in accordance with
current legislation/guidance
medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Public
Visitors
Land contamination ,pollution of watercourses and
groundwaters.
Contact with hazardous substances, ingestion, inhalation,
absorption leading to infections
S1 Area: Eccles WwTW
Hazard: H&S File information
Risk: No available H&S File information.
Action: Obtain available records and
Unable to obtain H&S file
Known H&S issues included in SSB/PCI.
medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
In-complete H&S information for WwTW site
S11 Area: Eccles WwTW.
MSC
M60
Hazard: O & M manuals
Risk: Unable to design and plan works
effectively.
Action: Obtain any available O&M manuals.
Confirm O&M of ex equipment with operational
staff
No available O&M manuals.
Contractor to liaise with WwTW site ops re
WwTW O & M
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Falls, injury, drowning, incorrect operation
S12 Area: All works areas.
Hazard: Existing SI reports or Asset surveys
Risk: Unable to design and plan works
effectively.
Action: Obtain all relevant available records
including 3rd party records.
Review available information and identify any
further surveys required to effectively design
and construct works.
All historic UU and 3rd party GI & SI obtained
Ex SI reviewed and further GI & SI undertaken
to provide sufficient GI & SI for works to be
designed.
Contractor advised in PCI of remaining 'holes' in
SI & GI data
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Inadequate or un-buildable design
S2 Area: All work areas.
Hazard: DSEAR and PEAZ
Risk: PEAZ study undertaken for project.
Action: Review and update PEAZ as required.
PEAZ study undertaken for project and included
in SSB Docs
Mitigation of the risk shall be in accordance with
United Utilities Code of Practice - Installations in
Potentially Explosive Atmospheres
medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Fire, explosion if zoning and mitigation not appropriate.
S3 Area: Eccles WwTW, works within 3rd party construction
sites
Hazard: Existing Emergency arrangements - e.g. Fire risk
/ evacuation plan, site emergency rules.
Risk: Injury, death, damage.
Action: Obtain existing site procedures and
include in site inductions and in planning of
work activities and site set-up.
WwTW Site procedures to be obtained by
Contractor and shall be adhered to.
medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Injury, death damage
S4 Area: Eccles WwTW, works within 3rd party construction
sites
Hazard: Existing site traffic management plan
Risk: Injury, death, damage.
Action: Obtain existing site procedures and
include in site inductions and in planning of
work activities and site set-up.
WwTW site traffic plan to be obtained by
contractor and adhered to.
SSB highlights overlaps with 3rd party
construction sites.
Contractor to obtain 3rd party traffic
management plans and adhere to them when
working within 3rd party sites.
Contractor to liaise with 3rd party contractors
medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Visitors
Injury, vehicle impact
S5 Area: Eccles WwTW
Hazard: Asbestos survey reports
Risk: Limited asbestos report for WwTW
available.
Action: Review report, identify limitations and
undertake any further surveys as required.
Include reports in PCI
Site asbestos report obtained and included in
PCI
Contractor to review for completeness in areas
where UID works interface with ex WwTW
facilities and commission additional reports as
required.
medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Lung infection, disease
S6 Area: All structures
Hazard: Existing ALM reviews
Risk: Injury .
Action: Undertake ALM as part of design
process
ALM undertake as part of the outline design.
ALM report included in PCI docs
ALM findings incorporated into outline design.
Construction ALM to be undertaken by
contractor.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Falls, injury
S7 Area: All structures
Hazard: Existing HAZID Study Report
Existing SIF (Safety Instrumented Functions) and SIL
(Safety Integrity Level) Reviews
Risk: Injury, incorrect operation.
Action: Undertake HAZID, SIF, SIL as part of
design process
To be undertaken by Contractor Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Injury, incorrect operation
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
S8 Area: All structures with M&E installations
Hazard: Existing Fire Risk review
Risk: Injury, operational issues.
Action: Undertake Fire Risk review as part of
design process
Review any ex facilities where temporary
connections to be made (eg TBM power
supply)
Fire Safety Review incorporated in ALM. No
issues raised.
Contractor to review as part of Construction
ALM/Fire Safety Review
Low 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Injury, fire, explosion
S9 Area:
Hazard: Existing HAZOP reports
Risk: Injury, operational issues.
Action: No ex Hazop. Undertake HAZOP as
part of design process and update and review
as appropriate through detailed design and
construction.
No existing HAZOPs for ex assets affected.
HAZOP undertaken as part of the outline design.
HAZOP report included in PCI docs
HAZOP findings incorporated into outline design.
Construction HAZOP to be undertaken by
contractor.
Medium 29/10/13 D Sephton - Civil Engineering Contractors
UU Operatives
Falls, injury, drowning
Contractor to confirm pipeline details and cover
depth with trial pits on site. Contractor to apply
United Utilities guidance and advice to protect
the sludge main during construction and provide
designated crossing points for construction plant
Significant
S
14/04/14 Lloyd Chapeyama-Civil
Engineering
Contractor UU
Operatives
Pressurised sludge main over the new 2m diameter sewer
and below the temporary car park
7570/80023696/01/17/20005 Y Y
Z1 Area: SAL 0018 CSO
Hazard: Installation of concrete upstands, grilles, access
covers over large openings
Risk: Falls, injuries.
Action: Consider precast upstands to avoid
working over large opening. Site to review the
temporary works required
Conisder precaszt upstands to avoid working
over large openings. Site to review the
temporary works requirements. Provide lifting
weights for the upstands
Significant
S
12/11/15 Lloyd Chapeyama-Civil
Engineering
Contractors Working over large openings to install grilles and access
covers
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
Project Number: 80023696
Version: See BC VersionClick to hide blanks
and update sheetClick to adjust row height for all text
No.
A129/10/2013
23/06/2015
12/11/2015
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
All excavations. High Risk -
all tunnels and shafts. SAL
0018 CSO, Peel Green
Road
Hazard: Unstable strata
formations - excavations
within made ground, water
logged sands/gavels and
made ground
Risk: Trench/excavation
collapse, stability of structures
Contractors
Visitors
Public
Mitigation: Appropriate GI undertaken along line of tunnels
and scope confirmed with specialist consultants and
contractors.
GBR prepared on basis of GI.
All available historical GI obtained and relevant GI from 3rd
parties
Contract docs prepared to reflect GI findings.
PCI includes all relevant GI. Procurement process included
rigorous assessment that appropriate TBMs and
methodologies selected for tunnelling and appropriate
methodologies adopted for shaft construction.
Risk and constructability workshops and reviews
undertaken. Site to review the temporary works and provide
a safe system of work. Monitor and control rate of
excavation/ground movement and sufface settlement
Revised risk: Significant
Risk of tunnel collapse and/or excessive settlement
leading to damage to 3rd party assets.
Possibility of damage to existing 1980 brick sewer or
undermining the structure
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
G5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
SAL0018/80023696/01/12/21030
SAL0018/80023696/01/12/21040
SAL0018/80023696/01/12/21041
SAL0018/80023696/01/12/21042
Y N
A1029/10/2013
23/06/2015
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
Abandoned 2300 and
1770x1150 sewers within
WwTW. Abandoned trunk
sewer in Peel Green Rd
(entrance to WwTW).
Hazard: Existing abandoned
underground structures
Risk: Stability of structure and
surrounding ground. Existing
structure may contain
groundwater/sludge/pockets of
gas.
Contractors
Mitigation: Available records obtained.
TH undertaken to confirm location and size/construction.
Existing abndoned sewers will be broken out to enable
construction
Revised risk: Significant
Unstable existing structures leading to collapse of
excavation.
Abandoned sewer/structures/pipes not filled/grouted
up and filled with groundwater leading to rapid
inundation of excavations.
Unknown materials with ex structures etc that may be
hazardous
Buried obstructions if trenchless techniques used. May
contain sludge/pockets of gas. Unexpected
obstructions. Restricted working space due to buried
structures
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/01/17/20002
7570/80023696/01/17/20003
7570/80023696/01/17/20004
7570/80023696/01/17/20005
7570/80023696/01/17/20007
7570/80023696/01/17/20008
7570/80023696/01/14/20009
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
A11 29/10/2013D Sephton - Civil
Engineering
Tunnel S3 to S4 Hazard: Uncharted test piles
for Barton HLB
Risk: Test piles encountered
by TBM below Barton HLB
leading to over excavation and
increased risk of ground
movement. Intervention
required below bridge to
remove piles.
Contractors
Public
Visitors
Mitigation: Available records obtained.
Non-intrusive SI undertaken.
Intrusive TH to be carried out (to be agreed with HA) and any
piles removed prior to tunnelling commencing (pile removal
to be agreed with HA)
Revised risk: Significant
Risk of TBM striking uncharted piles resulting in
excessive ground movement and excavation from
surface to TBM face to remove piles.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
A2 29/10/2013D Sephton - Civil
Engineering
Tunnels S01 to S02, and
S02 to S03, Shaft 01, Shaft
02, new 2m diameter sewer
next to former sludge
lagoon, new outfall to MSC.
Hazard: Unstable slopes on
the land
Risk: Failure of embankments
Contractors
Visitors
Public
UU Operatives
Mitigation: Appropriate GI undertaken along line of tunnels
and pipelines and scope confirmed with specialist
consultants and contractors.
GBR prepared on basis of GI.
All available historical GI obtained and relevant GI from 3rd
parties
Contract docs prepared to reflect GI findings.
PCI includes all relevant GI.
Procurement process included rigorous assessment that
appropriate TBMs and methodologies selected for tunnelling
and appropriate methodologies adopted for shaft
construction and pipeline construction.
Risk and constructability workshops and reviews
undertaken.
Revised risk: Significant
Risk of failure of former sludge lagoon embankment. SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1002
A6 29/10/2013D Sephton - Civil
Engineering
Works at Sallteye Brook
crossing, MSC outfall and
access to ex SAL0018
subway
Hazard: Steep / Slippery
Slopes
Risk: Falls, including falls into
deep and potential fast flowing
water
Contractors
Visitors
Mitigation: Advise of hazard through PCI.
Revised risk: Significant
Falls, slips, drowning SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
A829/10/2013
10/06/2014
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
All excavations and tunnels
within areas of made
ground or in close proximity
to areas of made ground in
particular landfill site and
former sludge lagoon
Hazard: Contaminated land
Risk: Contact with hazardous
substances, fire or explosion,
Contractors
Public
Visitors
UU Operatives
Mitigation: Appropriate GI undertaken along line of tunnels
and scope confirmed with specialist consultants and
contractors.
GBR prepared on basis of GI.
All available historical GI obtained and relevant GI from 3rd
parties
Contract docs prepared to reflect GI findings.
PCI includes all relevant GI. Procurement process included
rigorous assessment that appropriate TBMs and
methodologies selected for tunnelling and appropriate
methodologies adopted for shaft construction.
Risk and constructability workshops and reviews
undertaken.
Revised risk: Significant
Explosion from methane in solution within
groundwater contaminated by overlying landfill/made
ground.
Infections/diseases from coming into contact with
contaminated material either through excavation or
transportation (including through residential areas).
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
7570/80023696/01/17/20002
7570/80023696/01/17/20003
7570/80023696/01/17/20004
7570/80023696/01/17/20005
7570/80023696/01/17/20007
7570/80023696/01/17/20008
7570/80023696/01/14/20009
A929/10/2013
23/06/2015
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
All shafts and tunnels;
pipelines, CSO chambers
Hazard: Highly permeable
ground
Risk: Rapid Inundation of
excavations, instability of
excavations and structures.
Risk of flotation
Contractors
Public
Visitors
Mitigation: Appropriate GI undertaken along line of tunnels
and scope confirmed with specialist consultants and
contractors.
GBR prepared on basis of GI.
All available historical GI obtained and relevant GI from 3rd
parties
Contract docs prepared to reflect GI findings.
PCI includes all relevant GI.
Pump test to be undertaken where permeability of material
critical to design (shaft 04 and outfall)
TBM selection and shaft sinking methodology to be
appropriate for encountering highly permeable ground. Site
to manage/control any water egress in working areas
Revised risk: Significant
Risk of tunnel/shaft collapse and/or excessive
settlement leading to damage to 3rd party assets
Rapid inundation of excavations/tunnels/shafts
Structural failure of shafts/tunnels and other u/g
structures. Risk of flotation of structures and pipelines
SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1002
DG5053/80023696/01/09/20103
DG5053/80023696/01/09/20104
DG5053/80023696/01/14/20107
7570/80023696/01/14/20009
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
B10 29/10/2013D Sephton - Civil
Engineering
New outfall to MSC. Hazard: Rapid changes in
water pressure or flows within
MSC due to operation of
sluices at locks.
Risk: Differential pressures or
strong currents immediately
downstream of locks
Contractors
Mitigation: Records of MSC structures and water levels
obtained.
Continued liaison with MSC over operation of MSC and
obtaining approvals for works in MSC.
Revised risk: Significant
Risk of injury drowning to divers from underwater
currents and differential pressures.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
B2 29/10/2013D Sephton - Civil
Engineering
WwTW due to filling and
disposal of material, area to
west of M60 known landfill
site
Hazard: Refuse Tipping
(Industrial or Domestic)
Risk: Exposure to harmful
substances, sharps etc
Contractors
Public
Visitors
UU Operatives
Mitigation: Former landfill sites identified through available
records.
Areas of tipping on WwTW identified from available records.
Appropriate GI undertaken and data made available SSB,
GSR, PCI.
Revised risk: Significant
Contact with hazardous substances during excavation
or transportation.
Contact with contaminated groundwater.
Presence of hazardous substances not identified in GI.
SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1002
SAL0018/80023696/01/01/11006
SAL0018/80023696/01/01/11007Y Y
B329/10/2013
10/06/2014
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
All construction areas to
west of M60 including
tunnels
Hazard: Military Firing Range
or area of WW2 bombing –
Unexploded Ordnance (UXO)
Risk: Explosion
Contractors
Public
Visitors
Mitigation: Desk study report of UXO risk obtained from
specialist consultant.
Magnetometer survey to be undertaken within MSC.
Non-intrusive surveys for UXO along S3-S4 if feasible.
Revised risk: Significant
UXO encountered in tunnel or shaft excavation. SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
B729/10/2013
10/06/2014
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
All existing and proposed
structures. High risk - all
new sewer and tunnels and
ex. SAL0018 CSO and
access subway
Hazard: Contact with live
sewage, high flows, flooding
and surcharge
Risk: Entrapment, explosion,
fire, inhalation, disease,
infection.
Contractors
Public
Visitors
UU Operatives
Mitigation: Obtained water level and flow data from hydraulic
models.
Obtained sewer flood data.
Obtained flow and flood level data from EA.
Obtained MSC water level data.
Plan works to mitigate risks of inundation, high flows, high
water levels.
Design works not to result in additional flooding and to be
able to cope with anticipated design flows and water levels.
Revised risk: Significant
Injury, drowning, flooding, damage to assets and 3rd
party property
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003Y N
B8 29/10/2013D Sephton - Civil
Engineering
New outfallto MSC. Hazard: Discharges to or re-
suspension of contamination
within silt at base of MSC
channel.
Risk: Toxic conditions within
MSC
Contractors
Mitigation: Plan works to avoid periods where re-suspension
has occurred. May be particular issue for diving operations.
Undertake tasting of water within the canal to confirm that
water is not toxic to those having to work in MSC
Revised risk: Significant
Operatives (particularly divers) coming into contact
with toxic substances with canal.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
C11 29/10/2013D Sephton - Civil
Engineering
All works on sewerage
network and Eccles
WwTW.
Hazard: Wastewater
Treatment
Risk: Hydraulical overloading
of the works, failure of works
to meet regulatory consents Contractors
UU Operatives
Visitors
Public
Mitigation: Obtained water level and flow data from hydraulic
models.
Obtained sewer flood data.
Obtained flow and flood level data from EA.
Plan works to mitigate risks of inundation, high flows, high
water levels.
Design works not to result in additional flooding and to be
able to cope with anticipated design flows and water levels.
Requirements for permits to discharge groundwater etc
highlighted in SSB.
Revised risk: Significant
Malfunction of WwTW leading to consent failure.
Flooding from WwTW
SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1001
Potentially
include this
item in H&S
File? (Y/N)
Information to be provided about
the residual hazards - Identified on
Drawing/ Document No.
Detailed
design to
include SHE
box on
drawings?
Designer Measures Taken to Reduce
or Eliminate Hazard by Design, and
design assumptions in assessment.
Hazard or
Hazardous Activity
Person(s)
affected
Description of Residual Issues,
Hazards or Risks
(including details of any
Hazardous Materials assumed to
be included in the design)
12 November 2015
Date
Added
Designer
(Name &
Discipline)
"Structure"/
location
considered to be
At Risk,
Hazard and Risk Management System (HARMS) Workbook -- Significant Risks and Hazards Log
Project name: Man Trunk UIDs - SAL0018
Date:
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
C1229/10/2013
23/06/2015
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
All existing underground
structures.
High risk - existing
SAL0018 subway and CSO
chamber and new shaft
sand tunnels. Peel Green
Road. Entrance to Eccles
WwTW
Hazard: Existing underground
chambers and sewers
Risk: Entrapment, confined
space, inhalation of gases,
explosions Contractors
UU Operatives
Visitors
Mitigation: Obtain records of structure and access.
Known problematic access.
Modification works kept to a minimum and components can
be moved/placed safely via manual handling.
Potential for toxic atmospheres and flooding from sewers
and culverted watercourses.
Contractor to consider forced ventilation and monitoring of
weather and flows/levels. Site to consider monitoring
conditions including the atmosphere, water, slurry,
contaminated land, grouts, chemical additives
Revised risk: Significant
Limited working space - manual handling issues
Confined space toxic atmospheres
Inundation from sewers and culverts - injury, drowning
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1003
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
C13 29/10/2013D Sephton - Civil
Engineering
Spoil bund formation area
on Eccles WwTW
Hazard: Eccles Archery Club
adjacent to northern boundary
of Eccles WwTW working
area. Club to remain in use
throughout works
Risk: Injury from stray arrows
Contractors
UU Operatives
Visitors
Public
Mitigation: Archery club unable to be re-loacted or temp
closed due to designated international venue.
Continuous liaison with Archery club required.
Full safety zone cannnot be maintained. Installation of
mitigation along edge of working area to provide suitable
barrier to stray arrows and to keep workforce away from
barrier.
Ensure no archery taking place during installation of
mitigation.
Revised risk: Significant
Injury SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1001
C4 29/10/2013
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
Existing electrical panels
within WwTW and
potentially within areas of
made ground. Shaft 04
Working area and access
road from A57
Hazard: Asbestos
Risk: Contact/inhalation by
operatives Contractors
UU Operatives
Mitigation: WwTW site asbestos survey obtained and
included in PCI.
Any further surveys required to be undertaken.
Revised risk: Significant
Ex Asbestos survey not comprehensive.
Asbestos present in panels where electrical
connections to be made. Asbestos found in the Shaft
04 working area
SSB and PCI
Y Y
C5 29/10/2013D Sephton - Civil
Engineering
New shafts and tunnels and
existing sewer network .
Hazard: Extremes of
temperature
Risk: Failure of plant and
equipment, adverse effects of
operatives
Contractors
UU Operatives
Visitors
Mitigation: New tunnels and shafts - access to install
ventilation dusting for future maintenance of shafts and
tunnels incorporated into design of shafts.
Maintenance Philosophy includes for use of forced
ventilation for inspection /maintenance of shafts and tunnels
MS from contractors reviewed for ventilation provision during
construction.
Revised risk: significant
Malfunction of plant is not designed for temperature
range.
Injury to operatives if forced ventilation not provided.
SSB, PCI, Maintenance Philosophy
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
C6 29/10/2013D Sephton - Civil
Engineering
New shafts and tunnels and
existing sewer network .
Hazard: Extremes of humidity
Risk: Failure of plant and
equipment, adverse effects of
operativesContractors
UU Operatives
Visitors
Mitigation: MS from contractors reviewed for ventilation
provision during construction.
Through review process ensure plant is designed to operate
when exposed to anticipated temp range.
New tunnels and shafts - access to install ventilation dusting
for future maintenance of shafts and tunnels incorporated
into design of shafts.
Maintenance Philosophy includes for use of forced
ventilation for inspection /maintenance of shafts and tunnels
Revised risk: significant
Malfunction of plant is not designed for humidity
range.
Injury to operatives if forced ventilation not provided.
SSB, PCI, Maintenance Philosophy
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
C7 29/10/2013D Sephton - Civil
Engineering
Shafts 01, 02 and tunnel S1
- S2
Hazard: Working
adjacent/below/on motorway
main carriageway and slip
roads
Risk: Accidents, queuing
traffic, operatives being struck
by vehicles
Contractors
UU Operatives
Visitors
Public
Mitigation: Working areas separated from slip roads. Ex VRS
to be replaced with demountable VRS if required for access.
Access to motorway to be agreed with ASC.
Restrictions on access to motorway agreed with ASC and
included in SSB/PCI.
Access to S1 during daytime now not off slip road making it
safer.
Use of Section 12 TM contractor for TM on motorway.
Revised risk: Significant
Impact with vehicles using the main carriageway or
slip roads.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1003
C829/10/2013
23/06/2015
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
A57 access works. Works
within Peel Green Rd.
Hazard: Working adjacent to
or within 'live' carriageways
Risk: Accidents, queuing
traffic, operatives being struck
by vehicles or debrisContractors
UU Operatives
Visitors
Public
Mitigation: Liaison with local HA to agree access, road
closure and TM measures.
Undertake detailed risk assessments for access and egress
to/from Shaft 01 site
Agreed reduced speed limit on A57 at Shaft 04 site access.
Shaft 04 access - design access so that vehicles and
enter/leave site without queuing or slewing into outside lane
and gives required sightline for vehicles exiting the site.
Revised risk: Significant
Managing pedestrians crossing site accesses and
working areas
Vehicles exceeding temp speed limits. Man/machine
interface
SSB and PCI
SAL0018/80023696/00/98/1002
SAL0018/80023696/01/01/11006
SAL0018/80023696/01/01/11007
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
C9 29/10/2013D Sephton - Civil
Engineering
Shaft 02 working area Hazard: Using residential
streets to access working
areas. Roads designated as
play streets. Significant on-
street parking.
Risk: Accidents, damage to
3rd party vehicles
Contractors
UU Operatives
Visitors
Public
Mitigation: Undertaken an assessment of alternative
accesses in conjunction with SCC/UV.
Confirmed local roads the only viable access.
Agreed access route TM proposals with SCC/UV to ensure
construction vehicles can access site safely.
Undertaken consultation with local residents re TM and
construction access
Revised risk: Medium
Adverse publicity
Impact from vehicles ignoring TM regime
Damage to 3rd party vehicles due to restricted
highway widths and on-street parking.
SSB, PCI
D129/10/2013
23/06/15
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
1980mm dia brick sewer,
MH01, and MH02, existing
SAL 0018 CSO chamber,
New SAL 0018 CSO
Hazard: Making alterations to
existing 1980mm NB brick
sewer that conveys combined
flows. Excavating immediately
adjacent to 1980 NB sewer.
Risk: Significant flows,
flooding, surcharging or
collapse resulting in injury or
drowning
Contractors
UU Operatives
Visitors
Public
Mitigation: Obtained existing records
Obtained flow, level and flooding data from hydraulic model
Sheet piling to be installed to construct CSO off-line without
damaging ex sewer. Site to review the temporary works
requirement and provide a safe sytem of work
Revised risk: Significant
Collapse of ex sewer leading to flooding and possible
inundation of excavations. Deep Excavations adjacent
to existing sewer. Construction of chambers over
existing sewer
SSB/PCI SAL0018/80023696/01/12/21030
SAL0018/80023696/01/12/21040
SAL0018/80023696/01/12/21041
SAL0018/80023696/01/12/21042
Y
D12 29/10/2013D Sephton - Civil
Engineering
Tunnel S3 to S4 and
Shaft04/Outfall.
Hazard: Redundant 165NB
cast iron Naptha main
Risk: Fire, explosion
Contractors
UU Operatives
Visitors
Public
Mitigation: NGG contacted to confirm main is redundant
TH undertaken to confirm location of main.
NGG procedures to be obtained to remove sections of
redundant main.
Revised risk: Low
Redundant main still contains residual gases or fluids
that could result in explosion during removal or
damage from ground movements.
SSB/PCI
D15 29/10/2013D Sephton - Civil
Engineering
Existing assets during
tunnelled crossing below
assets - Tunnel drive S2 -
S3
Hazard: UU sewers - Existing
1200 NB surface water sewer
and 1000NB combined sewer.
New 2000NB sewer if
construction sequence results
in tunnel crossing following
installation
Risk: Potential for new or
worsening of existing
structural defects leading to a
potential collapse or loss of
structural
integrity/watertightness.
Ingress of fines into sewer
leading to ground movement
and potential failure of
earthworks above sewers.
Contractors
UU Operatives
Visitors
Public
Mitigation: Surveys undertaken to accurately located assets.
Internal surveys (CCTV and walkthrough) to determine
existing condition.
Limits on ground movement and vibration and assets set in
SSB.
Preliminary Ground movement/damage analysis undertaken
to confirm whether protective measures required.
Tunnel vert alignment set to minimise ground movement at
asset
S/c submissions reviewed to ensure protection to assets
addressed in submission
Revised risk: Significant
Greater than expected ground movements leading to
damage to assets and associated consequences.
SSB, PCI, Maintenance Philosophy and Significant Hazard
Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
D16 29/10/2013D Sephton - Civil
Engineering
Existing assets during
tunnelled crossing below
assets - Tunnel drive S2 -
S3
Hazard: HA Assets - 2 no.
2400 x 3000 culverts -
SALTEYE BROOK
CULVERTS
Risk: Potential for new or
worsening of existing
structural defects leading to a
potential collapse or loss of
structural
integrity/watertightness.
Ingress of fines into sewer
leading to ground movement
and potential failure culverts or
M60 embankment above
sewers.
Contractors
UU Operatives
Visitors
Public
Mitigation: GI obtained to be able to determine ground
movements from tunnelling.
Available HA records reviewed to determine ex condition
Limits on ground movement and vibration and assets set in
SSB.
Preliminary Ground movement/damage analysis undertaken
to confirm whether protective measures required.
Tunnel vert alignment set to minimise ground movement at
asset
S/c submissions reviewed to ensure protection to assets
addressed in submission
Included within AIP for M60 crossing (to be accepted by HA)
Pre & post condition inspection and monitoring requirements
stipulated in SSB and AIP
Revised risk: significant
Greater than expected ground movements leading to
damage to assets and associated consequences.
Asset condition has deteriorated since last inspection
SSB, PCI, Maintenance Philosophy and Significant Hazard
Dwgs:
SAL0018/80023696/00/98/1001
D18 14/04/2014Lloyd Chapeyama-
Civil Engineering
Eccles WwTW temporary
access road; 2m diameter
pipeline; temporary car
park
Hazard: Existing 250mm
sludge main which operates at
pressures up to 25 bars
Risk: Damage from
construction plant and
vehicles for proposed
temporary car park
Contractors UU
Operatives
Mitigation: Contractor to follow United Utilities Guidance and
advice to protect the pipe during construction of the new
pipeline and temporary car park. Contractor to provide
designated crossing points during construction. Cover depth
of the sludge main to be confirmed on site
Revised risk: Significant
Pressurised sludge main over the new 2m diameter
sewer and below the temporary car park
7570/80023696/01/17/20005
Y N
D2 29/10/2013D Sephton - Civil
Engineering
1980mm NB brick sewer
above tunnel S1 - S2
Hazard: Tunnelling below
1980NB brick sewer with
cracks visible in soffit
Risk: Potential for new or
worsening of existing
structural defects leading to a
potential collapse below the
M60.
Contractors
UU Operatives
Visitors
Public
Mitigation: Proposed tunnel alignment kept as far away from
cracked section given site constraints for shafts.
6 monthly monitoring of defect undertaken prior to
tunnelling. Any changes in cracking to be notified and taken
account of in the design.
GI undertaken and interpreted
Ground movement and damage assessment undertakne to
confirm ground movement should not damage sewer
Crossing of sewer included in AIP for JN11
TBM selection to minimise risk of excessive ground
loss/settlment
Appropraite pre- and post-construction monitoring
Revised risk: Significant
Damage to sewer from excessive ground
loss/settlement.
Collapse of M60 carriageway.
Injury/vehicle impact
Flooding
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
E129/10/2013
23/06/2015
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
Residential properties at
the Shaft 01, Shaft 02 and
Peel Green Road working
areas.
Hazard: Residential buildings
in close proximity to large plan
area, deep excavations.
Risk: Ground movement or
vibration resulting in instability,
structural defects, partial or
full structural failure
Contractors
UU Operatives
Visitors
Public
Mitigation: Appropriate GI undertaken.
Excavations located as far away from properties that site
restrictions will allow.
Sufficient working space provided to construct works without
inevitable damage to properties.
Preliminary ground movement analysis undertaken to
determine impact of tunnel/shaft works on properties.
Pre construction condition surveys of properties undertaken.
Ground movement and vibration limits for works adjacent to
properties stated in SSB.
Low vibration piling techniques specified in SSB.
Appropriate ground movement and vibration monitoring
specified requirement in SSB. Site to monitor and control
rate of advance/excavation/ground movement and sufface
settlement. Periodic Inspection regime
Revised risk: Significant
Greater than expected ground movements and
vibration leading to damage to properties and
associated consequences.
SSB, PCI, Maintenance Philosophy and Significant Hazard
Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1003
DG5053/80023696/00/98/1003
DG5053/80023696/01/01/20102
DG5053/80023696/01/09/20103
DG5053/80023696/01/09/20104
DG5053/80023696/01/11/20111
DG5053/80023696/01/14/20107
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
SAL0018/80023696/01/12/21030
SAL0018/80023696/01/12/21040
SAL0018/80023696/01/12/21041
SAL0018/80023696/01/12/21042
Y N
E10 29/10/2013D Sephton - Civil
Engineering
Barton Locks Hazard: Tunnelling in close
proximity to Barton Locks
Risk: Ground movement or
vibration resulting in instability,
structural defects, partial or
full structural failure.Contractors
UU Operatives
Visitors
Public
Mitigation: Available records obtained and included in SSB
and PCI.
Appropriate GI undertaken.
Tunnel located as far away from locks that site restrictions
will allow.
Sufficient space provided to construct works without
inevitable damage to locks.
Preliminary ground movement analysis undertaken to
determine impact of tunnel/shaft works on locks.
Pre construction condition surveys of locks to be undertaken.
Ground movement and vibration limits for works adjacent to
locks stated in SSB.
Appropriate ground movement and vibration monitoring
specified requirement in SSB.
Revised risk: Significant
Greater than expected ground movements and
vibration leading to damage to locks and associated
consequences.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
E11 29/10/2013D Sephton - Civil
Engineering
Salteye Brook Outfall
structure and associated
services.
Hazard: Tunnelling in close
proximity ex. Salteye Brook
Outfall Structure. Traversing
plant across Salteye Brook
Outfall Structure. (note the
outfall structure forms a bridge
across the brook).
Risk: Ground movement or
vibration resulting in instability,
structural defects, partial or
full structural failure.
Instability, structural defects,
partial or full structural failure
resulting from exceeding safe
weight limit for vehicles
crossing the bridge.
Failure of assets fixed to or
laid across bridge - 24" trunk
water main and Virgin Media
cables (see Services section
above)
Contractors
UU Operatives
Visitors
Public
Mitigation: Available records obtained and included in SSB
and PCI.
Appropriate GI undertaken.
Tunnel located as far away from outfall structure that site
restrictions will allow.
Sufficient space provided to construct works without
inevitable damage to outfall structure.
Preliminary ground movement analysis undertaken to
determine impact of tunnel/shaft works on outfall structure.
Pre construction condition surveys of outfall structure to be
undertaken.
Ground movement and vibration limits for works adjacent to
outfall structures stated in SSB.
Appropriate ground movement and vibration monitoring
specified requirement in SSB.
Revised risk: Significant
Greater than expected ground movements and
vibration leading to damage to outfall structure and
associated consequences.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
E12 29/10/2013D Sephton - Civil
Engineering
Banks of MSC Hazard: Tunnelling in close
proximity to earth bank of
MSC . Shaft and outfall
construction next to and within
the bank of the MSC .
Risk: Ground movement or
vibration resulting in instability,
defects, partial or full slope
failure.
Failure of assets fixed to or
laid across bridge - 24" trunk
water main and Virgin Media
cables (see Services section
above)
Contractors
UU Operatives
Visitors
Public
Mitigation: Available records obtained and included in SSB
and PCI.
Appropriate GI undertaken.
Tunnel located as far away from MSC banks that site
restrictions will allow.
Sufficient space provided to construct works without
inevitable damage to MSC banks.
Preliminary ground movement analysis undertaken to
determine impact of tunnel/shaft works on MSC banks.
Pre construction condition surveys of MSC banks to be
undertaken.
Ground movement and vibration limits for works adjacent to
MSC banks stated in SSB.
Appropriate ground movement and vibration monitoring
specified requirement in SSB.
Bathymetric survey of canal banks at outfall structure to be
undertaken prior to outfall construction commencing.
Design of outfall incorporates features to maintain integrity
of MSC bank from channel excavation and erosion from
outfall flows.
Revised risk: Significant
Greater than expected ground movements and
vibration leading to damage to MSC banks and
associated consequences.
Detailed design of outfall does not incorporate
appropriate measures to ensure integrity of MSC
banks.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
E429/10/2013
10/06/2014
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
1240 x 1240 final effluent
culvert and 3000 x 2000 r.c.
storm water box culvert in
Eccles WwTW.
Hazard: UU assets - 1240 x
1240 final effluent culvert and
3000 x 2000 storm water box
culvert located within working
area for Shaft 03.
Risk: Structural capacity of
culverts unknown. Area above
the culverts potentially subject
to plant movements, material
storage, spoil treatment and
stockpiling. Potential for
structural failure/collapse
leading to rapid inundation of
excavations or working areas
and severe flooding from the
sewer network upstream of
the Eccles WwTW Inlet CSO.
Contractors
UU Operatives
Visitors
Public
Mitigation: Available records obtained and surveys
undertaken to confirm location and existing condition.
Location of assets plotted on dwgs.
Requirement to protect assets included within SSB.
Revised risk: Significant
Assets not protected or movements over assets not
controlled leading to structural failure, injury, rapid
inundation, WwTW consent failure and WwtW and
network flooding
SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1002
7570/80023696/01/17/20002
7570/80023696/01/17/20003
7570/80023696/01/17/20004
7570/80023696/01/17/20005
7570/80023696/01/17/20007
7570/80023696/01/17/20008
7570/80023696/01/17/20006
7570/80023696/01/14/20009
7570/80023696/01/14/20012
7570/80023696/01/14/20013
7570/80023696/01/14/20014
7570/80023696/01/14/20015
7570/80023696/01/14/20016
7570/80023696/01/14/20017
7570/80023696/01/14/20018
Y N
E629/10/2013
10/06/2014
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
1240 x 1240 r.c. final
effluent box culvert and 3 x
2 storm culvert in Eccles
WwTW.
Hazard: UU asset - 1240 x
1240 FE and 3 x 2 storm water
box culvert founded on piles.
Tunnel S2 - S3 crossing below
culvert
Risk: Tunnelling below will
result in ground movement or
vibration potentially resulting
in instability, structural defects,
partial or full structural failure.
Continuous final effluent flows
within culvert may result in
rapid inundation of
excavations or working areas
if flows not constrained within
culvert due to structural
failure. Inadequate measures
to deal with flows will result in
failure of the treatment
process and potential for
flooding of the WwTW. Flows
escaping from culvert may
result in erosion of ground
above tunnel.
Contractors
UU Operatives
Visitors
Public
Mitigation: Surveys undertaken to accurately located assets.
Internal surveys (CCTV) to determine existing condition.
Limits on ground movement and vibration and assets set in
SSB.
Preliminary Ground movement/damage analysis undertaken
confirming that protective measures required
S/c submissions reviewed to ensure protection to assets
addressed in submission
Revised risk: Significant
Inadequate asset protection measures resulting in FE
flows and storm flows not maintained resulting in
structural failure, rapid inundation of excavations,
injury, drowning, WwTW consent failure and WwtW
and network flooding.
SSB, PCI and Significant Hazard Dwgs:
SAl0018/80023696/00/98/1002
7570/80023696/01/17/20002
7570/80023696/01/17/20003
7570/80023696/01/17/20004
7570/80023696/01/17/20005
7570/80023696/01/17/20007
7570/80023696/01/17/20008
7570/80023696/01/17/20006
7570/80023696/01/14/20009
7570/80023696/01/14/20012
7570/80023696/01/14/20013
7570/80023696/01/14/20014
7570/80023696/01/14/20015
7570/80023696/01/14/20016
7570/80023696/01/14/20017
7570/80023696/01/14/20018
Y N
E9 29/10/2013D Sephton - Civil
Engineering
Salford City Community
Stadium - South Stand
Hazard: Tunnelling in close
proximity to Salford City
Community Stadium - South
Stand
Risk: Ground movement or
vibration resulting in instability,
structural defects, partial or
full structural failure.
Note: South stand founded on
ground bearing slab. Only
north stand is founded on
piles.
Contractors
Visitors
Public
Mitigation: Available records obtained and included in SSB
and PCI.
Appropriate GI undertaken.
Tunnel located as far away from stadium that site restrictions
will allow.
Sufficient space provided to construct works without
inevitable damage to stadium.
Preliminary ground movement analysis undertaken to
determine impact of tunnel/shaft works on stadium.
Pre construction condition surveys of stadium to be
undertaken.
Ground movement and vibration limits for works adjacent to
properties stated in SSB.
Appropriate ground movement and vibration monitoring
specified requirement in SSB.
Revised risk: Significant
Greater than expected ground movements and
vibration leading to damage to stadium and associated
consequences.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
F129/10/2013
23/06/2015
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
All working areas and
structures within defined
floodplain
Hazard: History of flooding
from watercourses and
potential flooding from MSC
Risk: Inundation, injury,
drowning. Implications on
flotation of pipelines and
structures. Pollution and
contamination of floodwaters
by construction materials,
fuels etc.
Contractors
UU Operatives
Visitors
Public
Mitigation: Flood mapping and level data obtained from EA
for Salteye Bk and MSC and included in PCI and SSB.
Flotation design requirements included in PSD. Site to
manage and control water egress into working areas
Revised risk: Significant
Inundation of excavations and working areas.
Unexpected groundwater during
construction/tunneling
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
DG5053/80023696/01/01/20102
DG5053/80023696/01/11/20111
DG5053/80023696/01/09/20103
DG5053/80023696/01/09/20104
DG5053/80023696/01/14/20107
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
F229/10/2013
10/06/2014
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
Properties on DG5 register
on Peel Green Road.
Hazard: History of flooding
from sewer network
Risk: Inundation, injury,
drowning. Implications on
flotation of pipelines and
structures. Disease/infection
from sewage contaminated
floodwater
Contractors
UU Operatives
Visitors
Public
Mitigation: Water level and flow data obtained from hydraulic
modelling.
DG5 flood risk data obtained and mechanism of flooding
confirmed.
Ex Flood bund to remain in place until all downstream
improvements made or maintain an equivalent form of
mitigation crest of existing bund at 19.35m AOD
Design to include 1:30 yr event emergency storage in the
event of total power failure as no e/o.
FRA undertaken as combined flows discharge to WwPS
confirming requirement for emergency storage.
Revised risk: Significant
Inundation of excavations and working areas.
Flooding of properties and carriageway. Unexpected
groundwater during construction/tunnelling
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
DG5053/80023696/01/01/20102
DG5053/80023696/01/11/20111
DG5053/80023696/01/09/20103
DG5053/80023696/01/09/20104
DG5053/80023696/01/14/20107
DG5053/80023696/01/01/20101
DG5053/80023696/01/11/20112
DG5053/80023696/01/11/20113
DG5053/80023696/01/11/20116
Y N
F3 29/10/2013D Sephton - Civil
Engineering
MSC - tunnelling, shaft and
outfall construction
Salteye Brook - tunnel
construction
Former sludge lagoon -
excavations at toe of bund
and surveying
Hazard: Watercourses,
reservoirs, rivers, canals,
lakes, lagoons
Risk: Injury, drowning.
Inundation of excavations.
Unstable excavations. Rapid
variations in water table.
Contractors
UU Operatives
Visitors
Public
Mitigation: Water bodies noted on dwgs.
Sufficient working space provided to avoid immediately
adjacent to water bodies (except where crossing or
connection to water body required).
Flow and level data obtained from EA for Salteye Bk and
MSC and included in PCI and SSB.
Revised risk: Significant
Injury, drowning
Falls from height into water, slips and falls on steep
banks
Inundation of excavation through or adjacent to water
bodies
SSB, PCI and Significant Hazard Dwgs:
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1002
F4 29/10/2013D Sephton - Civil
Engineering
Tunnel crossing of Salteye
Brook
Formation of outfall to MSC
(diving operations)
Hazard: Strong underwater
currents and differential
pressures
Risk: Injury, drowning.
Strong currents may be
present downstream of Barton
Locks due to operation of
locks and sluices and flows
entering MSC from Salteye
Brook.
Differential pressures may be
present downstream of Barton
Locks due to operation of
locks and sluices
Contractors
Mitigation: Flow and level data obtained from EA for Salteye
Bk and MSC and included in PCI and SSB.
Records of MSC locks and Salteye Outfall obtained and
included in SSB/PCI
Liaison with MSC re works within MSC
Undertake works in accordance with UU approved diving
procedures (incl in SSB) and MSC requirements
Revised risk: Significant
ADD F5
Flow and level data obtained from EA for Salteye Bk
and MSC and included in PCI and SSB.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
G329/10/2013
23/06/2015
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
All new assets.
WwTW
Upstream properties
Hazard: Connections of
existing sewer network to new
sewers, pipelines, shaft sand
tunnels
Risk: Flooding, injury,
drowning and pollution.
Contractors
Public
UU Operatives
Visitors
Mitigation: Constraints included in SSB. Flow data provided.
Site to review the temporary works requirements and provide
a safe system of work
Revised risk: Significant
Flooding if works not correctly programmed and
measures undertaken to prevent flows discharging to
new works out of sequence.
PCI and SSB SAL0018/80023696/01/12/21030
SAL0018/80023696/01/12/21040
SAL0018/80023696/01/12/21041
SAL0018/80023696/01/12/21042 Y N
H1029/10/2013
10/06/2014
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
Shaft 01 and Shaft 02
working areas
Hazard: Traffic flows and
speed - M60
Risk: Shaft 01/Shaft 02
working areas sited next to
M60 JN11.
Access to working areas
required off M60 Slip roads.
Tunnelling under M60 will
require monitoring of
carriageway settlement and
access to assets with access
points on slip roads
Access to M60 may only be
possible during nightime
Risk of collisions, accidents,
injuries.
Contractors
UU Operatives
Visitors
Public
Mitigation: Site to provide adequate barriers; access and
egress ways as agreed with planning authority
Revised risk: Significant
Impacts with other vehicles and pedestrians.
Restricted access. Man/machine access
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1003
SAL0018/80023696/01/01/11010
SAL0018/80023696/01/01/11011
SAL0018/80023696/01/01/11012
SAL0018/80023696/01/01/11013
SAL0018/80023696/01/12/21030
SAL0018/80023696/01/12/21040
SAL0018/80023696/01/12/21041
SAL0018/80023696/01/12/21042
SAL0018/80023696/01/11/21029
Y N
H5 29/10/2013D Sephton - Civil
Engineering
Shaft 01 working area Hazard: Access limiting
conditions - Shaft 01 working
area.
Risk: Residential
roads/alleyway not suitable for
construction access.
Collision, injury, damage to
roads and 3rd party property.
Alleyway not suitable for large
maintenance access vehicles
(ie Disab).
Contractors
Visitors
Public
Mitigation: SCC/UV/HA/BBMM consulted and main
access/egress to be via JN 11 roundabout and A57.
Night-time deliveries via slip road.
Construction vehicles using alleyway only to use alleyway for
accommodation works.
Constraints included In SSB and SSB
Road Safety Risk assessments undertaken by specialist
highway engineering consultants for access off roundabout
and management of pedestrian interfaces
Site designed for future maintenace requirements
Revised risk: Significant
Impacts with other vehicles and pedestrians. SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
H6 29/10/2013D Sephton - Civil
Engineering
Shaft 02 working area Hazard: Access limiting
conditions - Shaft 02 working
area.
Risk: Residential roads linking
Peel Green Rd and Liverpool
Rd with the working area are
relatively narrow with
restricted turning space at
junctions.
Significant on-street parking
and roads designated as 'Play
Streets'.
Risk of collision, injury,
damage to roads and 3rd party
property.
Deliveries of large items of
plant/materials will not be
feasible through the residential
streets
Contractors
UU Operatives
Visitors
Public
Mitigation: Constraints included in SSB
Undertaken an assessment of alternative accesses in
conjunction with SCC/UV.
Confirmed local roads the only viable access.
Agreed access route TM proposals with SCC/UV to ensure
construction vehicles can access site safely.
Undertaken consultation with local residents re TM and
construction access
Revised risk: Significant
Impacts with other vehicles and pedestrians. SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1003
H729/10/2013
10/06/2014
D Sephton - Civil
Engineering
Lloyd Chapeyama
Civil Engineering
Shaft 01 and Shaft 02
working areas. Salteye
Brook Culverts. SAL0018
CSO
Hazard: Exceptional loads.
Risk: Some plant required to
construct the works may be
considered to be exceptional
(eg cranes, TBM etc).
Some materials required for
the works may be considered
to be exceptional (eg shaft
roof slabs).
Access through the residential
streets serving the working
areas will be feasible.
Risk of collision, injury,
damage to roads and 3rd party
property.
Contractors
Visitors
Public
Mitigation: Consultation with HA ASC (BBMM). Agreed that
exceptional loads can be delivered to sites via slip roads
under full closure of slip roads (full closure for safety
reasons) at night-time.
Constraints on access included in SSB.
Constructability review undertaken.
S/C confirmed that access of slip roads sufficient for large
deliveries and TBM removal/delivery by crane.
SSB includes BBMM requirements for slip road closure and
traffic movements. Roof Slab Panels to be cast as precast
on site as manageable weights. Site to review the
Revised risk: Significant
Impacts with other vehicles and pedestrians. Weight
Limit over Salteye Brook when accessing Shaft 04 is
300 tonnes
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1003
SAL0018/80023696/00/98/1001
SAL0018/80023696/01/01/11012
Y N
H8 29/10/2013D Sephton - Civil
Engineering
Shaft 01 working area (M60
JN11) and Shaft 04 working
area (A57) accesses.
Hazard: Poor sight lines
Risk: Increased risk of
accidents, injuries.Contractors
UU Operatives
Visitors
Public
Mitigation: Requirement to maintain existing sightlines at S1
and S2 included as constraint in SSB.
Specialist highway engineering consultants engaged to
confirm sightlines at A57 Shaft 04 access.
Planning and contract docs prepared to ensure that
sufficient working area provided and tree/hedge removal
undertaken to give required sightlines.
A57 sightline requirements included as constraints and
design requirements in PSD and SSB
Revised risk: Significant
Impacts with other vehicles and pedestrians. SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
J8 29/10/2013D Sephton - Civil
Engineering
WwTW, Shaft 01 working
area, tunnel S3 - S4, Shaft
04/Outfall, new 2000NB
sewer below WGIS rd
Hazard: Other Contracts:
Risk: Potentially other
contracts on going in close
proximity:
Peel Holdings - WGIS road
west of WwTW boundary and
at JN11 M60
Peel Holdings/Salford
development of site to west of
M60
Highways Agency - M60
Managed M'way
Service diversion contracts for
the UID scheme, Port Salford
and WGIS
All will involve works being
undertaken concurrently, and
in close proximity to the UID
scheme works. Increased risk
of injuries or damage to works
due to loading or impacts from
3rd party construction plant.
Contractors
UU Operatives
Visitors
Public
Mitigation: Presence of other nearby construction contracts
included in SSB and PCI.
Continuous liaison with contractors and clients to determine
restrictions, programme and working and design
requirements.
Revised risk: Significant
Impacts with other contractors vehicles and
operatives.
Design impacts of other works not incorporated into
UID works.
Design/construction requirements of UID works not
incorporated into other schemes.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
J9 29/10/2013D Sephton - Civil
Engineering
All work areas. Hazard: Aeroplanes or flight
paths
Risk: Barton aerodrome to
west of site - all sites
potentially on flight path.
Risk of planes/helicopters
colliding with jibs on cranes.
Contractors
Public
Aircraft
Mitigation: Follow HSE guidance on works below flight
paths.
Inform Barton Aerodrome of works
Included as constraint within SSB.
Revised risk: Significant
Impacts of aircraft with crane jibs SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
K2 29/10/2013D Sephton - Civil
Engineering
No information for this
reference
No information for this
referenceContractors
UU Operatives
Mitigation: Undertaken HAZOP and ALM
Maintenance Philosophy prepared for Shafts and Tunnels
Design of pipelines and chambers in accordance with UU
Standard Details, Sig Designs and UU'Designing for Safety'
Revised risk: Significant (for deep shafts and tunnels)
Flooding, malfunction of assets, injury, drowning,
asphyxiation if approved procedures are not followed.
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011
Capital Delivery
L1 29/10/2013D Sephton - Civil
Engineering
Shafts, CSO chamber,
manholes
Hazard: Ex and new deep
shafts and chambers
Risk: Falls, injuries
Contractors
UU Operatives
Mitigation: Requirement to follow UU procedures for entering
confined spaces on ex sewer network included in SSB/PCI.
Undertaken HAZOP and ALM
Maintenance Philosophy prepared for Shafts and Tunnels
Design of pipelines and chambers in accordance with UU
Standard Details, Sig Designs and UU'Designing for Safety'
Revised risk: Significant (for deep shafts and tunnels)
Flooding, malfunction of assets, injury, drowning,
asphyxiation if approved procedures are not followed.
Confined Spaces working within the proposed 1800
sleeve pipe at Peel Green Road
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
L2 29/10/2013D Sephton - Civil
Engineering
Barton High Level Viaduct -
Installing and Maintaining
Monitoring. Bridge
Assessment inspections.
Hazard: Barton High Level
Viaduct
Risk: Falls, injuriesContractors
Public
Mitigation: Obtained bridge records from HA.
Access onto bridge only via designated access routes with
RAMS approved by BBMM/HA/GCA.
Access to inspect bridge using MEWP only with RAMS
approved by BBMM/HA/GCA
Revised risk: Significant
Falls, injury SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
N1 29/10/2013D Sephton - Civil
Engineering
Eccles WwTW, Shaft 01,
Shaft 02, Shaft 04 and Peel
Green Rd
Hazard: Security system
/existing security concerns
Risk: Unauthorised entry onto
the site, potential for injuries,
damage and theft
Contractors
UU Operatives
Public
Mitigation: Vandalism/unauthorised entry discussed with
WwTW manager and ops.
Significant unauthorised entry & theft risk included in
SSB/PCI
Requirement for gateman at WwTW included in SSB.
Requirement for appropriate fencing included in SSB/PSD.
Kiosks at S1 and PGR to be steel as opposed to GRP
Revised risk: Significant
Unauthorised entry onto site, vandalism, theft, injury,
delay.
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
N2 29/10/2013D Sephton - Civil
Engineering
Eccles WwTW, Shaft 01,
Shaft 02, Shaft 04 and Peel
Green Rd
Hazard: Vandalism
Risk: Potential for injuries,
damage and delays to
programme
Contractors
UU Operatives
Public
Mitigation: Vandalism risk stated in SSB/PCI
Requirement for gateman at WwTW included in SSB.
Requirement for appropriate fencing included in SSB/PSD.
Kiosks at S1 and PGR to be steel as opposed to GRP
Revised risk: Significant
Unauthorised entry onto site, vandalism, injury, delay. SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
7570/80023696/00/98/1002
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
N4 29/10/2013D Sephton - Civil
Engineering
Eccles WwTW and Salford
City Stadium emergency
access/egress to rear of
stadium (across tunnel line)
Hazard: Have fire assembly
access routes been
accommodated
Risk: Injury, closure of
facilitiesContractors
Public
Mitigation: Emergency access/egress and fire assembly at
WwTW determined and requirement not to affect in
SSB/PCI.
Tunnel route S3 - S4 passes below emergency
egress/access to Salford Stadium. If a surface intervention is
required then access must be maintained to ensure that the
Stadium can continue to operate. requirement stated in
PCI/SSB
Revised risk: Significant
Injury. Stadium unable to operate unless emergency
route is available at all times.
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
K2 29/10/2013D Sephton - Civil
Engineering
No information for this
reference
No information for this
referenceContractors
UU Operatives
Mitigation: Undertaken HAZOP and ALM
Maintenance Philosophy prepared for Shafts and Tunnels
Design of pipelines and chambers in accordance with UU
Standard Details, Sig Designs and UU'Designing for Safety'
Revised risk: Significant (for deep shafts and tunnels)
Flooding, malfunction of assets, injury, drowning,
asphyxiation if approved procedures are not followed.
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
L1 29/10/2013D Sephton - Civil
Engineering
Shafts, CSO chamber,
manholes
Hazard: Ex and new deep
shafts and chambers
Risk: Falls, injuries
Contractors
UU Operatives
Mitigation: Requirement to follow UU procedures for entering
confined spaces on ex sewer network included in SSB/PCI.
Undertaken HAZOP and ALM
Maintenance Philosophy prepared for Shafts and Tunnels
Design of pipelines and chambers in accordance with UU
Standard Details, Sig Designs and UU'Designing for Safety'
Revised risk: Significant (for deep shafts and tunnels)
Flooding, malfunction of assets, injury, drowning,
asphyxiation if approved procedures are not followed.
Confined Spaces working within the proposed 1800
sleeve pipe at Peel Green Road
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
L1 29/10/2013D Sephton - Civil
Engineering
Shafts, CSO chamber,
manholes
Hazard: Ex and new deep
shafts and chambers
Risk: Falls, injuries
Contractors
UU Operatives
Mitigation: Requirement to follow UU procedures for entering
confined spaces on ex sewer network included in SSB/PCI.
Undertaken HAZOP and ALM
Maintenance Philosophy prepared for Shafts and Tunnels
Design of pipelines and chambers in accordance with UU
Standard Details, Sig Designs and UU'Designing for Safety'
Revised risk: Significant (for deep shafts and tunnels)
Flooding, malfunction of assets, injury, drowning,
asphyxiation if approved procedures are not followed.
Confined Spaces working within the proposed 1800
sleeve pipe at Peel Green Road
SSB, PCI and Significant Hazard Dwgs:
DG5053/80023696/00/98/1001
SAL0018/80023696/00/98/1001
SAL0018/80023696/00/98/1002
SAL0018/80023696/00/98/1003
7570/80023696/00/98/1001
R2 29/10/2013D Sephton - Civil
Engineering
Outfall structure Hazard: Diving Operations
Risk: Drowning, muscular
skeletal injuries from impacts
or differential pressures
Contractors
Mitigation: Records of lock and outfall structures obtained
from MSC and EA.
Current UU diving procedures included in SSB.
Requirement for all diving within MSC to be approved by
MSC.
Contractor to liaise with MSC re lock operation and vessel
movements.
Current outfall design minimises diving operations but these
will still be required as outfall is submerged below MSC TWL
Revised risk: Significant
Drowing, injury form impact or differential pressures
and underwater currents
SSB, PCI and Significant Hazard Dwgs:
SAL0018/80023696/00/98/1002
Z1 12/11/2015Lloyd Chapeyama-
Civil Engineering
SAL 0018 CSO Hazard: Installation of
concrete upstands, grilles,
access covers over large
openings
Risk: Falls, injuries
Contractors
Mitigation: Conisder precaszt upstands to avoid working over
large openings. Site to review the temporary works
requirements. Provide lifting weights for the upstands
Revised risk: Significant
Working over large openings to install grilles and
access covers
Z2 12/11/2015Lloyd Chapeyama-
Civil Engineering
Peel Green Road (1200
sewer)
Hazard: Confined Spaces
Working in 1800 sleeve pipe
during tunelling works
Risk: Entrapment, suffocation,
explosions, fire, drowning
Contractors
Mitigation: Site to review the entry and monitoring
procedures prior to entry
Revised risk: Significant
Confined Spaces working
Z3 12/11/2015Lloyd Chapeyama-
Civil Engineering
SAL 0018 CSO Hazard: Possibilty of 'cathing'
edge of existing 1980 brick
sewer due to sheet pile
tolerances; Possibility of
ground settlements
Risk: Damage to existing
structure; unsuccessful
installation of sheet piles to
design levels
Contractors
Mitigation: Site to review the temporary works requirements
and provide necessary support. Monitor the vibration and
ground settlement
Revised risk: Significant
Damage to existing brick sewer
Based on Template Ref HST 020 Hazard and Risk Management System (HARMS) Workbook Version 2.0 July 2011