6 infrastructure

Buildings Practice For ProfessionalsConstruction Method Statements

Chapter 6 Infrastructure

InfrastructureSafety General

1 Refer to Chapter 3, MS 12 & 13, Chapter 4, MS1, Chapter 6, Page 1 for general provisions on safety discipline in addition to those included with various method statements on this Chapter

2 Relevant point should be extracted from description in line to requirements on relevant activities

3 It is to be noted that safety standards vary from organization to organization, company to company & client to client

4 Just consideration of economy on project cannot exclusively, be a criterion to avoid or reduce safety measures

5 A minimum level of safety measures installations should be made a ‘must’ for a site supervise to ensure that workforce ‘must’ work safely

6 It is preferable to work with acceptable level of safety rather than loosening lives of workers

General ProvisionsDefinitions

1 PSM Project Site Manager2 CSM Construction Site Manager3 CS Construction Superintendent/Project Supervising Engineer 4 IS Infrastructure Superintendent5 SE Site Engineer6 GE Geotechnical Engineer7 SO Safety Officer8 GFM General Foreman9 FM Foreman10 QC Quality Control11 S Surveyor12 PPE Personal Protective Equipment

Responsibilities1 PSM shall ensure that site preparation activities are carried out in line/according to

project specifications, within specified time & within budget cost since, PSM is responsible contractually for project site prosecution on an overall basis.

2 PSM shall manage to procure all required resources for relevant activities.3 PSM shall control overall operations respecting all activities in all respects being an

organization agent4 CSM shall arrange resources required accordingly and act overall responsible for

excavation operation directly reporting to PSM5 CS shall control, monitor and direct SE, GFM, FM and workforce for relevant activities6 GE shall ensure that activities are conducted inline/according to project specifications

and this method statement.7 SE shall be responsible for all site activities and follow instructions of CS/CM

Page 1 of 39 2012 Int. P Eng (India) Suraj Singh


Chapter 6 Infrastructure8 Whatever, mishap on excavation operation shall immediately, be notified to CS and CM

by SE for immediate action, if so required for either possible remedy or record for authority review, whatsoever a case it may be

9 IS shall ensure that site preparation activities are carried out in line / according to this method statement as well as, complying with all contract/project specifications.

10 GFM shall be responsible for whole lot of workforce available on site for distribution, extraction of output, redeployment, supervision & controls.

11 GFM shall ensure that required workforce should be allotted to respective site everyday during morning depending on various activities in which connection, a coordination, interactions with site engineers/supervisors/CM/CS etc. shall be required continuously

12 GFM shall also, ensure that required equipment are available on sites during activities13 GFM shall everyday report all actions to CM/CS & Engineers14 FM shall execute operations deploying workforce & explain in full in language, work

persons understand about all instruction and Toolbox talks everyday and ensuring that instructions are followed up by workers regularly

15 QC shall inspect all operations required to be effected according to specifications & in line to ITPs requirements

16 S shall ensure that all surveys are conducted to requirements with all bench marks & grid coordinates located to requirement as well as, all survey recorded for submission

17 SO shall ensure that all safety requirements are complied with/met by site personnel18 EPC Contractor shall conduct surveillance over all ongoing activties all days as well as

ensure that inspections are conducted regularly by Engineer/client

Responsibilities in addition to foregoing general description1 S shall accurately plot and record all as built marks respecting existing ground levels,

formation, bedding, pre cast members & possible control references.2 SE & SO shall ensure that traffic diversion works well from safety viewpoint3 SE shall ensure that excavation is rightly carried out in all respects in line to drawings &

specification & in compliance with all safety procedures.4 SO shall ensure that excavations are safely carried out.5 SO shall ensure that equipment operators comply with safe procedures6 SO shall ensure that all safety measures are effected, while works are being carried out in

trench from ground7 PSM shall ensure that validity of permit to work is in force, until involved works are

completed including asphalt work at a later stage after concrete slab is finished

Safety (in continuation to safety descriptions on MS 12 & 13 Chapter 3 & MS 1 Chapter 4)1 Prior to commencement of whatever activity, workforce shall receive a STARRT

card/Toolbox talk. 2 Process involving a particular safety risk, shall be calculated by conducting Job hazard

Assessment and necessary protective measures adopted to address risk issue.3 Included measures should comply with real requirement/standard as accepted or

recognized by industry/OSHA etc.4 Permits to work and installation safety equipment shall be attained prior to respective

activity commences.



Chapter 6 Infrastructure5 In this case, excavation has to be carried out on Operating Authority area therefore all

regulated precautions shall be strictly adhered to effect ‘full safety standard’.6 Only, specifically approved mechanical equipment/third party certified, whilst locating

these services shall be used7 Generally, where appropriate, only manual excavation shall be carried out to investigate/

expose existing either plant services or other services that may cause sudden damage or breakdown, should excavation be effected without investigation

8 SO shall ensure that persons being inducted on site are well aware of adopting right/suitable safety procedure to be implemented on site for activity concerned.

9 All persons available upon site shall wear PPE issued to them. 10 Where possible, hazards may arise from excavation activities, necessary safety measures

shall be adopted to prevent accident or injury at all times during personnel’s presence on site/work.

11 This may include provision of signage, barriers, watchman and night lighting.12 When, traffic is required to be diverted for requirement to cross some road, permit to

work shall be obtained supported by detailed method statement including detailed traffic diversion plan with all other working details

13 Scanning of existing services shall be conducted by suitable methods prior to excavation is commenced with

Safety Supervision 1 A competent inspector shall visit included area daily to assess safety measures adopted. 2 Snags observed during visit shall be notified to supervisor present, who immediately,

would act to bring adopted safety measures to an acceptable standard 3 In case of certain incident, where utilities ‘not identified’ are discovered or damaged, all

works shall stop in area and Operator Shift Controller and HSE department immediately, notified.

Contacts/Phone references: 1 Shift Controller 2 Emergency Number 3 HSE Direct number

Employees working in easement area shall have a daily pre task briefing that includes;1 Reporting of incidents2 Methods of work and tools to be used3 Potential hazards found in Easement areas4 Approved work method statement5 EPC Contractor and Civil Contractor HSE department shall participate in presenting

STARRT card briefing, would monitor activities to ensure that work methods are being followed and all personnel have an understanding about hazards associated with working adjacent to live process areas

Excavation Work Permit-1 A copy of ‘work permit’ shall be posted on a mini board installed on site to be noticeable

to all persons involved



Chapter 6 Infrastructure2 Barricades cones, markers, night lights and floodlights etc. shall be installed as required

for a complete safety.

Flagman1 On all directions, in addition to traffic sign boards, flagmen shall be engaged to operate

full time to direct traffic about ‘excavation works in progress’ by waving ‘flag signal’ for all vehicles passing by

Hand Excavation 1 Excavation to expose services shall be carried out manually.2 In case, certain services not shown on record drawings such as fibre optics, but it is

discovered then further excavation shall be ceased, until a decision for employing hydro jetting method is taken up by plant authorities to be adopted for further excavation

Access to trench1 Workers shall clearly be instructed to use only ladders, whether to enter in/ingress or

come out/egress of trench. No jumping shall be allowed

Jack Hammer2 Workers engaged on operating this equipment shall use protective glass and work in

phases with pause intervals. 3 Compressor air pressure shall be monitored from time to time, so that hammer works

smoothly.4 Compressor shall be placed within barricade limits

Machine Excavation1 Operators/drivers shall be explicitly instructed to abide by requirement of reverse signal

and sound, when operating reverse. 2 Banksman shall be engaged, when equipment is in operation. 3 No violation of traffic rules shall be allowed, so as not to cause any accident.

Toolbox Talks 1 While conducting Toolbox Talks, a representative from authority shall be involved to

witness and sign instruction imparted with workers, prior to commencement of operations for record purpose.

2 Only English literate Foreman shall be employed to work on excavation execution.

Excavation Work Permit1 A copy of work permit shall be posted on a mini board installed on site to be noticeable

to all relevant persons involved on crossing

Traffic Management1 Sign boards keep up-All personnel shall be briefed about safe keep up of sign boards2 Barricades, cones, markers and night lights, flood lights etc. shall be arranged as required

for a complete safety. 3 No oil spillage shall be allowed.



Chapter 6 Infrastructure4 Sides of excavation shall be sloped with barriers placed on, to indicate excavation work

in progress

Deep Trenches1 Since, proposed excavation is considerably wide and deep, all safety measures shall be

resorted to and if required, shoring shall be provided to prevent caving in. 2 Trench depth being more than 1200 mm, adequate means of exits, such as either

Aluminum ladder or steps shall be provided and located not more than 8 m of lateral travel.

Precast members1 Since precast culvert units, covers and sleepers are heavy in load, proper care has to be

exercised during raising and downing (handling) to exact locations, strictly adhering to relevant safety measures

2 Proper calculations require to be computed for exact members weight assessment professionally, so as to procure competent & consistent hoisting equipment

MS1Rerouting of 33kv cables

IndexScope- Reference documents- Definitions- Responsibilities- Safety- Method- Equipment- Attachment

Scope1 Purpose of this method statement is to define procedure that can be implemented for

rerouting existing 33KV electric cable that crosses project site. 2 This method statement includes location, excavation, isolation, rerouting, jointing, testing

and backfill.

Reference documents1 Site drawing, Record Drawings

Responsibility1 Refer to general provisions on 1st page of this chapter for relevant position title

Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting traffic diversion, excavation, cable

laying & backfill in controlled areas

Method (sketch # 20 indicatively)1 Prior to excavation at points, where new cable is to be connected to existing 33KV cable,

necessary permits to work shall be obtained from operating authority. 2 EPC Contractor method statement for conducting cable Diversion shall be complied with.3 Existing route of 33KV cable shall be identified, marked & a barrier erected on either

side clearly defining route across site.



Chapter 6 Infrastructure4 Route proposed for new 33KV cable on AFC drawing shall be identified, marked on site

with pegs by ST, for which excavation shall commence to line and required level. 5 When excavation has reached to required level, appropriate sand bed shall be placed

within trench.6 New cable supplied by EPC Contractor shall be laid into trench inline/according to

approved methods and standards that would include placing of cable drum on a cable trolley and rollers.

7 Cable shall be unwound from cable drum by pulling to standard methods of pulling. 8 If required, a cable tugger fitted with load cell control, may be utilized.9 New cable shall be correctly placed to line and level upon prepared sand bed. 10 Wherever joints occur, sufficient cable overlap, to allow for jointing shall be provided.11 Insulation value of new cable shall be tested by 5KV motorized megger.12 Upon EPC Contractor Electrical Engineer/Engineer approval, cable shall be covered with

dune sand to required thickness evenly. 13 Cable tiles shall be placed on top of sand cover above new cable.14 Trench shall be backfilled with approved material meeting specifications. 15 Backfill activity shall continue, until trench is completely filled. 16 Route markers shall be placed with splice joints, locations surveyed and recorded.17 Where joints occur to cable either at two termination points with old cable or along

length of new cable, same technique shall be adopted.18 An experienced cable jointer, under supervision of an electrical engineer shall conduct all

cable jointing work.19 Approved jointing kits shall be utilized for cable jointing activities. 20 Manufacturer’s recommendations relating to installation of these jointing kits shall be

followed. 21 Upon completion of jointing of new cable length, entire length of new cable shall be

tested. 22 Cable shall be subjected to a pressure test of 67KV DC for 15 minutes on cable between

each core and earth. 23 Remaining cores shall be connected to earth. 24 Engineer shall measure leakage current, which all readings should be recorded upon

appropriate form. 25 Cable testing shall be witnessed by EPC Contractor/Engineer.26 Old cable shall be hand dug/excavated & an area sufficient to conduct jointing of cable

should be excavated.27 Electrical engineer in coordination with EPC Contractor engineer shall ensure that old

cables are identified and isolated, under supervision of Refinery Supervisor within appropriate substation.

28 Necessary earth and isolation to cables shall be conducted prior to commencement of jointing old cable to new one.

29 Cables shall be jointed in same manner as described previously.30 Once, old/new cables have been jointed, these shall be tested by mega test at 5KV and

HV test at 53KVDC to establish its integrity and insulation. 31 Disbanded cable shall be removed from new jointed cable by excavating and rolling

cable.32 New cable route corridor shall be covered with sand, cable tiles and backfill material.



Chapter 6 Infrastructure33 Upon completion of cable testing activities, Refinery Electrical engineer shall authorize

energizing of new cable route.34 Disbanded cable route shall be excavated to expose old cable. 35 Old cable shall be removed onto surplus cable drums, from which, new cable was coiled. 36 These drums shall be stored on site for EPC Contractor disposal.37 A program to be developed by all parties of ‘power outage windows’ shall be produced

for tie-in activities of cables.

Equipment1 Excavator, Dump trucks, Cable drum trolley, Cable rollers, Cable tugger with load cell

etc.Attachment

1 EPC Contractor standard method statement for cable diversion2 (Since, this statement may be submitted by Civil Works subcontractor on behalf of EPC

contractor, EPC standard method statement is required to be attached)MS2

Concrete pipe culvertsIndexScope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachment

Scope1 Purpose of this Method Statement is to define sequence and methodology for laying,

jointing and testing concrete pipe culverts.

Reference documents1 Specification 2 Drawing #


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting may or may not be traffic diversion,

excavation, pipe culvert laying & backfill in controlled areas

Method (sketch # 25 indicatively)Setting Out

1 Edge coordinates of pipe shall be calculated from information on drawing as well as, allowing for 1:1.5 slope & fixed in such a way, that full length of pipes are used without pipe cutting.

2 Center line and actual width shall be marked on ground.

Excavation1 Trench shall be excavated to correct width, length and formation by using a Hydraulic

backhoe.



Chapter 6 Infrastructure2 Once, bulk excavation is completed, wooden pegs shall be used showing elevations

marked on them to guide & complete excavation to required formation levels. 3 Formation shall be watered and compacted, using a plate compactor to achieve

compaction to 90% MDD in accordance with specification. 4 Compacted formation shall be inspected and field compaction tested prior to

commencement of bedding activity.

Bedding 1 Once excavation is completed & approved, bedding material shall be placed to a

thickness of 150mm, watered and compacted in compliance with specifications. 2 Compacted surface shall be inspected, tested and approved.

Pipe Work1 Socket positions shall be set out on Bedding.2 Manual excavation shall be carried out for socket portion to ensure that barrel of pipe

rests firmly on bedding.3 It shall also, be ensured that spigot ends remain clean to same standard as were, while

installing gaskets. Concrete pipes shall be transported from store to location of trench and gently, lowered into trenches with a crane using belt slings only.

4 Socket end shall be placed upstream, while pipes shall be laid back to back to correct orientation.

5 Spigot end of pipes shall be cleaned using a cloth with special care taken to clean recess, which should be lubricated with liquid soap following which, gasket placed in position.

6 Supports shall be placed at one end, while spigot shall be so placed that gasket is in contact with entry taper/bevel at socket evenly on circumference.

7 Spigot shall then be drawn into socket using a 5 ton Tirfor. 8 Upon completion of Joints operation, bedding material shall be packed below pipes, so

that barrel rests firmly on bedding and pipe does not move. 9 Top elevation of pipe shall be checked to ensure that laid pipe is accurately, placed to

correct alignment and elevations. 10 Operation shall be repeated, until all pipes are so laid. 11 Completed pipe work shall be inspected and approved. 12 Each joint shall be visually inspected from inside pipe if accessible.

Backfill1 Once pipes have been laid to True gradient and alignment as described above, Bedding

Material shall be carefully placed along sides and in between pipes by means of a backhoe.

2 Bedding and surround material shall be placed in layers, watered and compacted, until surround material reaches 300mm above top of pipe.

3 Excavated suitable material shall then be used in compacted layers of 200mm inspected and tested, until backfilling operations are completed.

4 A list of Do’s and Don’ts provided by manufacturer is attached herewith.

Equipment1 Crane 20Ton 1 #2 Flat Bed Trailer Part time3 Excavator Backhoe 1 #



Chapter 6 Infrastructure4 Trifor 5 Ton 2 #s5 Fork lift Part time6 Plate Compactor 1 #7 Water Tanker Part time

Workforce1 Foreman 1 # 2 Pipefitter 2 #s 3 Labours 4 #s

Attachment1 Manufacture’s datasheet

MS3Construction of pipe rack bases

IndexScope/Reference Documents/Definition/Responsibilities/Safety/Method/Equipment/Attachment

Scope1 Purpose of this method statement is to define sequence and methodology for Construction

of pipes rack bare foundations.

Documents1 Specifications 2 Drawing #


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting, excavation, foundation works, pre

casting, concrete protection, transporting precast units, placing pre cast units to locations & backfill in controlled areas

Method (sketch # 7 indicatively)1 It is proposed to cast pipe rack bases and columns at actual locations at site. 2 Method of Construction of pipe rack bases can be summarized in following activities.3 Setting Out all areas & grid locations for carrying out excavation activity4 Excavation activity to be carried out up to formation level5 Blinding Concrete to be carried out on formation levels6 Formwork to be provided for footings, stubs & grade beams if so required7 Steel Reinforcement to be provided for all elements involved with foundations8 Concrete Construction to be carried out for pre casting units pertinent to foundations9 Concrete Protection to be provided to foundations as below ground membrane10 Construction of Columns with Anchor Bolts to be carried out up to grade floor level



Chapter 6 Infrastructure11 Backfilling to be carried out to bring up all excavated non concrete spaces to finished

ground level12 Grouting to be carried out below structural steel column steel plates (anchored bolts

already in positions) & stub columns

Setting Out- Pipe Rack Bases1 Surveyor shall set out all grids both ways for locating foundation bases using centre lines

for foundations incompliance to details shown on designs2 These lines shall be given an offset say 2 m around, to establish survey controls &

allowing working space for excavation activity3 QC inspection shall be conducted for layout approval & records made for reference &

submission

Excavation1 Bases shall be excavated using suitable excavator, sides trimmed to avoid caving in.2 Excavated material shall be removed to site stockpile area or to spoils, as case may be 3 Excavation progress shall continuously, be monitored by surveyor so as to reach right

level for receiving blinding concrete4 After, blinding level is reached, soil shall be ensured for required safe bearing capacity5 Compaction shall be carried out on all areas to prepare for inspection & for laying

blinding concrete6 FDD sample shall be collected from site for laboratory testing & approvals7 After QC approval is obtained, blinding concrete shall be laid to established dots, wooden

finished to smooth status & curing of concrete followed as explained on next paragraph

Blinding Concrete1 Formation area to receive blinding shall be prepared to design levels & profiles. 2 Blinding side forms shall be erected if so required, to avoid unnecessary wastage of

redundant blinding concrete3 C20 PBFC grade concrete shall be placed to a minimum thickness of 50mm and top

surface smoothened by steel trowel. 4 Curing shall be carried out for blinding concrete for at least two days. 5 Prior to placement of precast pipe rack base on it, mass concrete infill shall be placed as

required in accordance with drawings as necessary.

Site Precast Yard for foundations1 A precast yard shall be constructed on site at location indicated on attached sketch.2 A wind shield fence 2m high shall be erected on Northern boundary as indicated on

proposed location in accordance with clause …… of specification.

Steel Formwork1 Steel Forms as shown on attached sketch shall be used for casting pipe rack base

foundations. 2 Forms should be easily struck as well as, placed in position. 3 Separate forms shall be used for bases, stubs and columns. 4 Base slab formwork shall have 100mm high suspended kicker.



Chapter 6 Infrastructure5 Fosroc reebol mould release oil shall be used for easy removal of forms. 6 Template for anchor bolts for pipe rack base type1, 3 & 5 shall be a 100mm wide strip of

steel plate across width of column steel formwork at top. 7 Template for pipe rack type 2, 4, 6, & 7 shall be similar in Construction type with 2

plates and a connecting piece.

Anchor Bolts & Steel Reinforcement1 Steel Reinforcement cut and bent to required shape and size shall be available on site. 2 Reinforcement shall be timely fixed in place on casting beds.

Lifting Hooks1 Lifting hooks shall be inserted into correct location & properly fastened, so as not to be

dislocated during concrete pouring.

Casting Concrete1 Formwork applied with a fresh coat of mould release oil shall be placed in position

around already assembled steel reinforcement. 2 Lifting recess plugs shall be installed in position with a Template. 3 All supports shall be fixed in right position. 4 QC shall be conducted to ITP requirement. 5 Base shall be poured and compacted with vibrators. 6 Surfaces shall be smoothened with steel trowel so as to produce a smooth surface to

receive protection. Curing shall be carried out to meet defined procedural requirements. 7 Formwork for column shall be installed following day. 8 Plumb and alignment shall be checked and anchor bolts with sleeves installed and held in

position by template. 9 Widths of template shall be kept to minimum to allow room for concrete vibrators. 10 Once column is cast, formwork shall be stripped after 36hrs and concrete cured for a

minimum period of 7 days.

Protective Coatings1 Once curing is completed as stated above, polythene sheets and hessian shall be removed

and concrete faces allowed to dry for at least 24hrs, during which time, minor repairs, such as filling up of blow holes etc. shall be carried out.

2 Faces shall be wiped clean with a wet sponge and surface prepared to receive first coat of protective painting.

3 Fosroc Nitocote ET 402 shall be mixed with a slow speed electric drill and applied with an airless sprayer equipment to required thickness of 1mm, as a single high build coat, in accordance with manufacturer’s instructions.

4 Column and top sides of boxes, vertical faces shall be painted as described above.5 Bottom of base slab shall be left without painting.

Traceability1 Pipe rack bases shall be numbered and given date/time of casting marked on concrete.

Lifting, Transportation and Installation



Chapter 6 Infrastructure1 After completion of curing, certified cranes of required capacity shall be used to lift pipe

rack bases from casting bed to flat low bed trailer. 2 Bases shall be transported to actual location of installations on site for direct offloading.3 On locations, preparatory pre sequence activities shall be completed prior to

transportation of bases. 4 Protection screed shall be cast accurately, to actual dimension of projection of pipe rack

foundation. 5 Using a Jack of adequate capacity, unit shall be moved to correct position accurately. 6 Crane shall be used to lift pipe rack base from Trailer down onto screed surface.7 Position of Anchor bolts shall be rechecked with a Theodalite and accuracy of installation

certified by a surveyor.

Back filling1 Once pipe rack base is installed, Backfilling with selected suitable fill material shall

commence. 2 Fill material shall be premixed with water 3% more than optimum moisture content for

daily requirement. 3 Layers of premixed fill material shall be placed to a thickness of 200 mm and compacted

properly. 4 Compacted surface shall be inspected, field tested and these operations repeated, until

Backfilling operations are completed.5 Anchor Bolts shall remain protected with PVC sleeves, until completion of Backfilling

operations and only, exposed at time of installation/erection of steel works.

Equipment1 Crane 50Ton 2 #s2 Flat Bed Trailer 40 Ton 1 #3 Excavator Backhoe 1 #4 Plate Compactor 1 #5 Water Tanker 1 #

Workforce1 Casting Engineer 1 #2 Placing Engineer 1 #3 Casting Foreman 1 #4 Placing Foreman 1 #5 Carpenters 30 #s6 Steel fixers 30 #s7 Masons 20 #s8 Laborers 40 #s

Attachment1 Manufacturer’s datasheet

MS4Control of camp sewage system

IndexScope/Reference Documents/Definition/Responsibilities/Safety/Method/Attachment




Scope1 Purpose of this method statement is to do actions that shall be implemented to monitor

and control sewage holding tank status, so that overflow is avoided.

Documents1 Method statement Waste Management


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting works related to camp controls,

environment control & sewage.

Method1 A new water meter to record water usage shall be installed prior to water storage tanks. 2 For next one month, regular readings at specific times shall be recorded to establish water

requirement trends.3 Information collected from this exercise shall help to understand peak demand periods,

which also, define sewage disposal requirements. 4 In parallel to this water input recording, a survey of sewage holding tanks filling trends

shall be established.5 A tank volume indicator system shall be installed at every sewage holding tank6 This indicator system shall consist of a visible indicator rod. 7 Based on a float system, rod shall raise up as holding tank fills. 8 This visual system shall remind CM to organize emptying of tank. 9 Data obtained from tanker drivers on number of loads discharged, shall help verify water

meter quantity to establish leakages.10 Existing provision for trucking of sewage waste shall be monitored. 11 Fleet capacity shall be increased as required, based upon results of survey.12 A review of collected data shall be conducted after one month to supplement existing

operational criteria as required. 13 Responsibility for compiling information shall be entrusted to camp boss, who ensures

that water consumption is regularly monitored, that areas of water abuse are identified, that holding tank emptying schedule established as well as, formulating measures to conserve and recycle water, wherever possible.

14 Initial trucking capacity that is dedicated to sewage disposal activity is ‘two trucks’. 15 These trucks operate on both suction fill and pump fill systems.16 Survey shall review and confirm required trucking levels needed service holding tanks.

Attachment1 NA

MS5Night shift working - earthworks



Chapter 6 InfrastructureIndexScope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachment

Scope1 Purpose of this method statement, is to define procedure that shall be adopted for

earthworks activity during Night Shift.

Reference documents1 Specification


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting works to be conducted at night due to

high temperature or overtime works such as concrete pouring.3 Relevant activity based safety issues should be imported4 Some relevant responsibility acts have been included within following described method

Method (sketch # 1-7/13/19/20 & all locations involving excavation)1 Activities that are scheduled to be carried out during night shift comprise of excavation,

hauling, stockpiling, spreading, leveling, watering and compaction. 2 These activities do not require any specific QC inspection coverage other than supervisor

surveillance. 3 IS shall prepare schedule defining work faces of night shift activity, prior to beginning.4 Work faces shall be illuminated by using tower mounted, easily repositionable

floodlights.5 Route, which construction equipment shall use for hauling ‘excavated material’, should

be made safe prior to work commences.6 Area for stockpiling material shall also, be illuminated. 7 A banksman wearing a high visibility vest shall direct stockpile area. 8 Similarly, a banksman shall direct excavation area. 9 Two banksmen shall be in communication with each other by two way communication

facilities (mobile phones).10 Earthwork supervisor and SO shall patrol entire site, overseeing all activities.11 Emergency Procedure.12 Safety Officer shall be responsible for coordinating night shift emergency procedure. 13 Upon an emergency arising, Safety Officer shall be notified.14 Safety Officer shall immediately, alert relevant emergency services, if so required.

a. 997 for Fire or civil defense (indicative only)b. 998 for an Ambulance (indicative only)c. 999 for Police (indicative only)

15 Safety Officer shall notify Safety Manager of emergency occurrence.16 Should camp doctor be required, shall be notified. 17 Safety Manager shall attend emergency and take control of situation.



Chapter 6 Infrastructure18 Required notification, investigation and reporting of emergency shall be conducted in

accordance with site HSE plan.First Aid

1 First aid facilities shall be made available for night shift operations at camp clinic.2 Safety Officer shall have telephone number of camp doctor, who would be summoned in

event of first aid requirements and emergencies.

Equipment1 Excavators/Dump trucks

Attachment1 None

MS6Fencing

IndexScope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachment

Scope1 Purpose of this method statement, is to define sequence and methodology for

construction and erection of site security fencing.

Reference documents1 Specification 2 Standard Drawings 3 Site Fence Location drawing


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting works related to fencing

construction/installation controls in control area.

Method (sketch # 20 indicatively)Precast elements

1 A precast yard shall be established as shown on attached sketch. 2 Casting beds shall be such that pouring, stripping, curing and coating can be achieved

easily. 3 A production/pouring cycle comprising 4 days is anticipated for casting, initial curing

and coating, prior to removal to site.4 Easily assembled and stripped steel prefabricated moulds shall be utilized for fence

foundation and ground beam.

Fence erection1 Final grade level of area shall be commencement point for fence construction.



Chapter 6 Infrastructure2 A level survey shall demonstrate accuracy of site grading activity.3 Survey Team shall set out line and level pertinent to fence, including post locations for all

elements.4 Using a machine mounted auger, 300mm and 450mm diameter holes as appropriate, shall

be drilled for fence post foundations.5 Drilled holes shall be cleaned and bedded to correct base level. 6 Fence post foundation shall be placed in drilled hole to correct line and level.7 Dune sand shall be filled & compacted around foundation.8 Fence fabric shall be strung and tensioned per drawing details and inline/conformance to

manufacturer’s recommendations.9 Using hand tools, a trench shall be excavated for ground beam.10 Ground beam shall be placed to correct line and level. 11 Suitable fill material shall be used to compact around ground beam.12 Fence fabric tie staple shall be grouted in position once fence fabric is tensioned.13 Gap between ground beams at location of fence post, shall be concreted to form a

continuous beam.14 QC inspection shall be conducted.

Equipment1 Concrete Mixer truck/Auger machine/Wagon with hyab/Plate compactor

Attachment1 Drawing #

MS7Expansion joints in ditches


Scope 1 This statement is aimed to propose procedures to be adopted to seal Expansion Joints in

ditches.

References1 Drawing #s 2 Specifications: 3 BITUMASTIC, Manufacturer – Polybit


Safety3 Refer to general provisions on 1st page of this chapter for relevant measures required4 This statement imports all provisions respecting works related to ditches joints sealant in

control areas.




Method (sketch # 20 indicatively)1 Size of proposed joints to be filled/sealed is 15 mm wide x 15 mm deep2 Surface shall be cleaned of all dirt, dust and loosely adhering materials.3 All grease and oil contamination shall be removed using hard small brushes, compressed

air etc. 4 Fibre board shall be removed to required depth.5 Under normal circumstances, priming is not required6 Masking tape shall be used to confine joint borders keeping adjoining concrete surfaces

clean.7 Contents of Can shall be removed by a Trowel or a Spatula. 8 Bitumastic shall be applied to prepared and masked portions.9 In case of vertical joints, bottom to top application sequence using a spatula or a trowel,

shall be followed ensuring that entire volume of joint is filled into effect making/giving a total contact with joint surfaces.

10 After application, sealant shall be smoothened and compressed into joint, using a spatula or a putty knife moistened with cleaning solvent.

11 Masking tape shall be removed immediately, after application is completed to keep concrete surface clean.

12 Full cure (a stage, when solvent evaporation is completed) shall normally consume 4 to 6 weeks post application of sealant

13 Painting over concrete surface, if so required, shall be carried out only after full cure has taken place.

Equipment1 Trowel/Spatula/Knife etc.

Attachment1 Manufacturer Datasheet

MS8Dewatering for 84” GRE pair pipeline parallel to corniche

road east westIndexScope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/ Manpower/Attachment

Scope1 This statement is aimed to present proposed procedures to be adopted to keep proceeding

excavations, for route respecting pair of 84” GRE pipelines to be laid in dry and free of inflowing water

References 1 Specifications Water Control/Dewatering Plan, Dewatering and Drainage2 Excavation Safety Plan3 Excavation & backfilling for underground structures



Chapter 6 InfrastructureResponsibility

1 Refer to general provisions on 1st page of this chapter for relevant position title

Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting works related to well point system

drilling in control areas, requiring all work permit issues

Method (sketch # 20 indicatively)1 North South excavation has already been carried out to intersection of proposed line and

Corniche Road as indicated by point at ‘S’ 2 On proposed route of lines i.e on North of road, exist various services at a distance 4 m

to 8 m, at a depth of 2 to 3 m from existing road level, running along either side of intersection i.e. East and West as shown on attached sketch as locations marked A to H for exposed inspection pits

3 Existing uneven ground level on proposed area is 1.8 m average lower than road level.4 Water is available at 2 m from road level but fluctuates rapidly depending on tides’ level.5 GRE pipe 2200 mm dia. pair shall be laid at a bedding of not less than 4000 mm to 4500

mm from road surface.6 Since drawing shows natural ground level 3.4 m, a 2.4 m depth is required to be

excavated, while water level is shown at 2.15m level, water should be bailed out upto 0-0 level requiring a 2m massive depth dewatering, along entire route, commencing from intersection at point ‘S‘ to terminal point at ‘T’.

7 Existing services shall be protected by necessary measures inline/according to statutory regulations and specifications prior to excavation commencement, for which an inquiry should be conducted with relevant Statutory Organizations/Client

8 Since this massive earth work is to be carried out in full to cover a length of 1200 m or more, dewatering shall be carried out inline/accordingly, by installing standard Well Point System on both sides of proposed route at a depth of minimum 3 m from existing ground levels at locations shown on sketch/drawing

9 Pumped out water shall continuously be be disposed off through hoses into proposed sumps to be located at varying distances from 100 to 200 m off road berm by installing booster pumps next to intermediate water tanks, so as not to allow disposed water to flow back into well point systems.

10 For route part besides box culvert (under construction) leading to pipelines West end, after running beneath overhead conveyors, disposal may be made into culvert manholes as being done by M/S XYZ construction overseas for which, matter was casually discussed with supervisor on site Mr. Z, who expressed no concern should water be discharged intended way.

11 Should this option not work, disposal shall be carried on to proposed sumps as shown since, in vicinity of Sulpha Plant Building area, further sumps to form, may not be allowed due to environmental degradation reasons.

12 Sumps shall be located as shown on drawing/sketch near embankment north/south side.13 For south, after jumping over bund, whatever course be feasible, should be adopted. 14 On south of embankment side, existing levels are low lying, where a total of 8/10 #s

sumps shall be needed be required.



Chapter 6 Infrastructure15 Sump pits to receive disposed water shall be filled with 75 mm clean aggregate prior to

disposal is commenced16 Well Points on both sides shall be installed in sections of 100 m average for each Sykes

Pump catchment and disposal be effected to, as shown by boosting.17 It shall take a duration of around 60 days to carry out excavation, bedding, laying pipes

and backfill, system/s have to be kept working till these operations are over.

Equipment/plants1 Well point system2 Plants and equipment requirement

S # ITEM DESCRIPTION UNIT QUANTITY REMARK1 Length of proposed route M 2400 2 x 1200 m2 Length of well point system M 2400 2 x 1200 m3 150mm dia. Headers average 5 M or so

longeach 480 6 points in each

4 50 mm dia. Well points 3 m long each 2880 Filterable 5 50 mm dia. Well points/Headers

Flexible connections each 2880 6 connections each

header6 Sykes/Miller pumps with suction and

delivery headseach 24 1 pump/100 well

points7 Intermediate water tanks (open top)

3 CUM capacity each 6 1 tank for 4 Sykes

pumps8 Booster pumps 5 BHP with compatible

fittings for tanks connectionseach 6 1 booster pump for 4

Sykes pumps9 150 mm dia. hose pipe to suit pump

inlets and outlets with suction and disposal/ delivery heads

M 500 Delivery up to open water tanks

10 75 mm dia. disposal hose to suit water tank outlets

M 1500 Disposal from open water tanks to proposed sumps

11 150 mm steel sleeve pipe for underground use

M 50 To be installed for incoming crossings

12 Drilling Rig with adjustable Auger attachment for 50 mm dia. Well Points

each 1 For drilling well point bores

13 All other compatible fittings and miscellaneous items for whole assembly not covered in above

LS

Attachment1 Drawing showing well point system installation layouts and section2 Typical details of system indicative only

MS9Bedding and gravel filling beneath 60” dia. pipe cooling water pipe





Scope1 This statement is aimed to propose procedures to be adopted for execution of bedding and

substrata gravel filling with provision to prohibit fine soil particles to migrate to bedding beneath pipe, where water table is met at bedding level, making compaction and density test unsustainable

Reference documents 1 Drawing-Not indicated 2 Specification Excavation & Backfilling for Underground structures


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting works related to bedding & filling

gravels, which require pertinent safety measures in control areas.

Method (sketch # 21 indicatively)Cooling water pipe line 60” dia. pipe bedding and gravel filling

1 Attached sketch shows proposed bedding and substrata gravel filling wrapped by Geotextile.

2 Excavation shall be carried out up to formation level plus another 200 mm, for crushed gravel filling as shown.

3 Geotextile TERRAM membrane shall be laid on prepared substrata as shown.4 A well packed 200 mm thick crushed gravel filling, shall be carried out on

approximately3000 mm wide base.5 Geotextile TERRAM membrane shall be continued over prepared crushed gravel filled

formation level surface, making gravels wrapped fully, allowing no fine soil particles enter strata.

6 Over this wrapped strata, a 150 mm thick sand bedding shall be carried out, duly compacted according to requirement of specifications.

7 After these operations are over and inspection done, 60” dia pipe shall be laid inline/according to requirement

8 QC/Engineer inspection shall be conducted

Equipment1 Excavator2 Compactor

Attachment1 Sketch



Chapter 6 InfrastructureMS10

Site office establishmentIndexScope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/ Manpower/Attachment

Scope1 Purpose of this method statement, is to define procedure that shall be adopted for

establishment of site office.

Reference documents1 Approved Site office layout and details drawings


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting works related to temporary offices to be

occupied in Portable cabins without requirement of any excavation or structural activities, requiring on critical safety issues

3 Excavation may probably be carried out for drainage, sewerage, sewage containment & electrical cabling only, which requires import of all such provisions

4 Crane safety shall also, be required for offloading cabins

Method1 Site shall be graded and compacted to levels indicated upon approved grading drawings.2 ST shall check final grades. 3 A record drawing of final grades shall be produced.4 ST using approved drawings shall set out relevant issues, such as service trenches and

foundations.Services

1 Service trenches relating to site office complex for drainage, water, electric and firewater, shall be set out.

2 Working to levels, a mechanical excavator shall excavate trenches. 3 Excavated material shall be reused for backfilling, when services have been installed. 4 Surplus material shall be removed from site. 5 Services may share common trenches, where appropriate.6 Drainage pipes shall be installed to grade. 7 Manholes shall be placed at locations indicated upon site office complex drainage

drawings. 8 Sewage holding tanks shall be located per drawing. 9 A steel tank shall be utilized for water storage. 10 Tank shall be backfilled as appropriate. 11 Draw pits and chambers for cabling shall be located in a similar manner.



Chapter 6 Infrastructure12 All service trenches shall receive appropriate sand bedding and surround, plus warning

tape for cabling should be provided. 13 Where certain services cross an area that is trafficked, service shall be ducted or/and

protected with concrete surround as appropriate.Foundations

1 For pre engineered office units, foundation layout drawing that indicates precast concrete block foundation locations shall be utilized for setting out.

2 Precast concrete foundation blocks, shall be placed upon pre graded ground. 3 Pre engineered office units, shall be off loaded from delivery wagon, directly onto these

blocks. 4 Shim plates shall be used between precast concrete block and unit chassis, where

necessary.Power Supply:

1 Relevant pre engineered sections shall be sealed. 2 Relevant utilities that require connection shall be connected. 3 Appropriate electrical power supply and distribution network shall be provided and

commissioned per approved drawings and schematics.4 Appropriate checklist shall be utilized.

Telephone Service1 Etisalat/official government or private department or company, shall provide service to

designate locations within building.2 Internal distribution system shall be installed per approved scheme.

Infra structure:1 Access roads to site office shall be constructed according to layout drawing. 2 Foot paths around site office shall be constructed per drawing.3 Drainage ditches for storm water shall be graded inline/according to site office layout

drawing.4 Parking areas as indicated on site office layout drawing shall be constructed, including

covered shelters, where appropriate.

Equipment1 Excavator/Dump trucks/Crane

Attachment1 ITP # Temporary Building Checklist QCF

MS11Filling around all GRP pipes within plant area

IndexScope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Manpower/Attachment

Scope1 This statement is aimed to propose procedures to be adopted for filling around GRP pipes

within Plant Area. Reference Documents



Chapter 6 Infrastructure1 Specifications


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting works related filling around pipes in

control areas.

Method (sketch # 21/20 indicatively)1 Following activities shall be involved to fill around pipes laid within plant area2 Fill sand with 150 mm thick layers around laid pipes3 Fill approved red fill material in layers in remaining trench space with 150 mm thick

compacted layers

Details1 First layer shall be filled 200 mm approximately compacted to 150 mm thickness. 2 Field density test shall be conducted for 95 % compaction. 3 A portion of compacted material 150 mm thick from radial fills shall be removed to

replace with sand for circumferential fill.4 This sand shall be placed in first layer portion to replace filled material circumferentially.5 Structural fill material for second layer shall be placed in 200 mm thick compacted to 150

mm for 95 % field density and tested inline/according to specifications.6 Again, a portion of compacted material 150 mm thick from radial area shall be removed

to replace with sand circumferentially.7 Sand shall be placed in second layer portion to replace filled material circumferentially.8 Similarly, succeeding layers of fill material shall be placed in 200mm layer thickness

approximately, compacted to 150 mm thickness inline/according to specifications and replaced by sand filling as aforesaid, until apex level of pipe is covered with sand.

9 Principle behind replacement of fill material by sand indicates that pipe should be in touch of sand

10 Remaining strata up to ground level/required level shall be filled in, with fill material in 200 mm thick loose layer approximately, compacted to 150 mm thick layers inline/according to specifications.

Equipment1 Compactor

Attachment1 Sketch showing various stages of filling

MS12Directional boring for sleeves

2 pipes 1# 20” raw ethane & 1# 6” propaneIndexScope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/ Manpower/



Chapter 6 InfrastructureAttachment

Scope1 This statement is aimed to propose procedures to be adopted to carry out directional

boring under road to facilitate laying sleeves for pipe lines 1 # each 20” Raw Ethane and 6” Propane at location identified on attached drawing to following reference

Drawing reference 1 Piping Interconnections First Street


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting permit to work, works related excavation

in trench, hand excavation, work of excavation less boring in control areas.Method

1 Necessary permit to work shall be obtained from Plant Refinery Division.2 Record drawings regarding existing services shall be obtained3 1# trial pits shall be made manually, on both ends of proposed boring to ascertain

availability of existing services and protect these from damage/also, be used for bentonite trial at receiving end

4 On site, sufficient excavated space is available to lower sleeve in to pull into bore5 On Eastern end, some electric cable is existing6 2 # 24” pipe lines also, exist adjacent to proposed route7 Minor trees on both ends may be effected in roots8 Excavated trench does not show any sign of water therefore, no dewatering shall be

carried out9 Excavation shall be carried out according to requirement10 On East End, missing berm, boring machine shall be positioned in trench at about 3 m

from berm 11 Boring shall be carried out in stages.

First stage1 Sleeve is in trench on West end and reamer fully underground.

Second stage1 Sleeve is partly pulled in and reamer partly withdrawn

Third stage1 Sleeve further pulled and reamer withdrawn accordingly

Fourth stage1 Full portion of sleeve is underground in bore and reamer out2 Excavated trenches on both ends shall be backfilled by Civil Contractor inline/according

to specification requirement and specified/involved tests carried out3 Reinstatement of effected services shall be carried out, after directional boring is

completed



Chapter 6 InfrastructureDirectional Boring

1 A non excavation method, which does not allow collapsing of ground surface2 M/S XYZ shall carry out Directional Boring employing Jet Trac Directional Boring

equipment according to their method statement attached. 3 Refer to attached sketches based on Ditch Witch guidelines 4 Bentonite is pure clay to be used as a fluid/slurry formed by mixing water. 5 It shall be used to cool drill bit and to lubricate drill area6 Material displaced by head/sleeves shall be discharged at receiving end in receiving pit

and removed from site7 All fully trained operators shall be employed/used on job

Major Equipment1 Jet Track Unit (complete package), Crane, Compactor

Attachment1 Plan of area indicating trial pits etc 2 Ditch Witch Method Statement3 Cross Section Sketches showing indicative procedures

MS13Thrust boring under road

Pipe lines 1 # each 20” Raw Ethane and 6” Propane IndexScope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachment

Scope1 This statement is aimed to propose procedures to be adopted to carry out thrust boring

under road to facilitate laying pipe lines 1# each 20” Raw Ethane and 6” Propane at location identified on attached drawing to following reference

Drawing reference –1 Piping Interconnections First Street



in trench, hand excavation, work of excavation less boring in control areas.Method

1 Necessary permit to work shall be obtained from Plant Refinery Division.2 Record drawings regarding existing services shall be obtained.3 Non Excavation Method4 Necessary drive and receiving pits shall be excavated by Civil Contractor according

approved procedures



Chapter 6 Infrastructure5 M/S XYZ shall carry out Thrust Boring employing Jet Trac Directional Boring

inline/according to brief procedures given below6 Jet Track unit shall be anchored to ground surface using hydraulically operated anchor

stakes7 Directional boring/Angled bit shall be drilled into ground using fluid assistance to

operate. 8 Bentonite and water shall be used to form a fluid to be sprayed at low pressure, ejected

out of drill head to lubricate drill procedure as well as, to cool electronic tracking components in drill head

9 An electronic receiver shall be used to track head from ground surface and when, directional control is required, head be pushed by drill unit without rotation, until drill head angle reached

10 Head shall be steered to ground surface, when it reaches destination end11 Then Drill head shall be removed from drill pipe and a back reamer with a pipe puller

attached, along with pipe/s to be installed underground12 During back reaming, drill fluid shall assist back reamer lubricate and form slurried area

for installable pipe13 Back reaming and pipe pulling simultaneously, shall allow pipe to be installed

underground, without excavation and continue, until back reamer and pipe reach launch end of Directional bore accomplishing boring complete

14 Necessary tests shall be carried out by EPC Contractor

Major Equipment1 Jet Track Unit complete package

Attachment1 XYZ Method Statement2 Sketches showing indicative procedures

MS14Earthworks survey system


Scope1 Purpose of this method statement, is to define procedure that shall be adopted for control

of site earthwork activities.

Reference documents1 Method statement respecting Site Preparation & Earthworks2 Specifications Site Preparation


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required



Chapter 6 Infrastructure2 This statement imports all provisions respecting permit to work, works related excavation

in cutting, filling, grabbing etc related surveys.

Method (sketch # 20 indicatively)1 Where areas are to be grubbed, IS shall direct ST to establish grid stakes at 50m centers

within area to be grubbed. 2 ST prior to commencement of machine activities shall provide a sketch of area defining

outer Northings and Eastings of area.3 Upon completion of establishment of survey grid stakes and site sketch, IS shall inform

QM.4 QM shall inspect area to verify correct establishment of survey grid stakes.5 QM shall notify EPC Contractor Engineer of proposed grubbing activity by using RFI

notification system.6 EPC Contractor Engineer shall review proposed grubbing area. 7 Should EPC Contractor Engineer have some comments or observations about area, shall

inform QM and /or IS of these observations following which, appropriate actions should be conducted.

8 Upon completion of grubbing activity, IS shall notify QM, who should inspect area and complete appropriate RFI.

9 EPC Contractor Engineer shall review area with QM/Geotechnical Engineer and comment, if appropriate.

10 Where area requires to be ‘cut’ ST shall establish pegs to indicate correct ‘cut’ level. 11 Cut activity shall be conducted.12 Upon completion of ‘cut’ activity, ST shall produce a ground level survey of ‘cut’ area. 13 This survey shall be forwarded to QM for record purposes. 14 QM shall transmit a copy of survey report to EPC Contractor Engineer.15 Where, area requires a ‘fill’ activity, formation level shall be moisturized and compacted

as defined within earthworks method statement. 16 IS shall coordinate with ST to establish fill stakes, that should indicate layer levels. 17 Each fill layer shall be placed, moisturized and compacted according to earthworks

method statement.18 Upon completion of all fill layers to area, ST shall produce a survey of finished ground

levels. 19 This survey shall be forwarded to QM for record. 20 A copy of this survey shall be transmitted to EPC Contractor Engineer.21 Should a grubbing level stake or fill stake be damaged or moved, ST shall reestablish

stake correctly.22 RFI system shall document comments and observations of an activity by EPC Contractor

engineer.

Equipment1 Total station/Distomat/Stakes/Marker tape.

Attachment1 None

MS15



Chapter 6 InfrastructureTennis courts surfacing


Scope1 This statement is aimed to propose procedures to be adopted to carry out Surfacing on 2

#s Tennis Courts located in contractor’s life Camp

Reference documents1 Drawing # not related


Safety3 Refer to general provisions on 1st page of this chapter for relevant measures required4 This statement imports all provisions respecting works related to ordinary concrete &

sports painting in non control areas.

Storage1 Courts surfacing Material bags shall be stored in a cool shaded area prior to use

Material1 MBT proprietary material2 Concresive 1414 3 MasterTop 512 4 Concresive 1414 is a 2 parts epoxy bonding agent5 Mastertop 512 is a ready to use nonmetallic and non oxidizing synthetic mineral

aggregate and cementitious product applied as a topping onto existing new concrete slab as a hard durable wearing course 10 to 12 mm thick.

6 Total surface area of Tennis Courts 2 # 930 m2

MethodFollowing operations are involved to carry out surfacing

1 Substrata preparation2 Priming and Bonding3 Mixing and Application4 Curing

Details1 Area shall be closed to all persons except workers and other related personnel 2 Surface of concrete shall be cleaned of all contamination such as oil, grease or fat, which

be removed before preparations are commenced with3 High pressure water jetting shall be used to prepare concrete surface to a coarse texture,

ensuring all weak or friable concrete be removed along with contaminants



Chapter 6 Infrastructure4 Concrete is already more than 28 days old5 Oil free Compressed air shall be used to remove dust from surface, making surface clean

& dry 6 Surface shall be primed with Concresive 1414 ensuring total coverage of surface7 A forced action ‘Mixall’ mixer shall be used to mix Mastertop 512 inline/according to

manufacturer’s instructions8 Content of bag shall be poured into mixer, followed by blending for about 30 seconds &

thereafter, slowly adding 2.3 to 2.4 litres water per 25 kg bag allowing to mix for 3 minutes

9 In hot weather conditions, chilled clean water shall be used for mixing10 Primed surface shall be prepared to be guided for proposed profile formation by using

timber/wooden straight edge battens 10 mm thick11 Mixed mortar shall have a plastic consistency, exhibiting low slump, which should be

evenly, spread over primed surface already prepared as expressed in foregoing12 A straight edge shall be used to systematically, tampen and level Mastertop 512.13 Floating material shall be pressed firmly on primed surface, using a wooden float to

produce material evenly, spread and compacted14 A steel trowel shall be used to carry out finishing.

Curing1 Curing shall be carried out immediately, after final trowel operation has been completed

by either covering with polythene sheets or by application of Masterkure 181 applied at a rate of 1 litre per 5 m2

2 All surfaces shall be protected from traffic use, until hardened (for light traffic limit is 24 hours and for heavy traffic limit is 72 to 96 hours)

Major Equipment1 Compressor, Mixer, Air Blower, Jack Hammer, Compressor, hydro jetting (depending on

necessity)Attachment

1 MBT Method StatementMS16

Pit 21 water connectionIndexScope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachment

Scope1 Purpose of this method statement is to define procedure that shall be adopted for

connection of water pipeline from Operating Authority supply pit No 21 to Civil Contractor camp.

Reference documents1 Excavation permit2 Drawing #: 3 Operating Authority easement Drawing #:






in trench, hand excavation, work of pipe laying& filling in control areas.

Method (sketch # 20 indicatively)1 Position of proposed pipe location through wall of pit 21 shall be marked. 2 Using hand tools, a hole shall be made through concrete pit wall. 3 Size of hole in pit wall shall be adequate to allow positioning of a purpose made UPVC

pipe sleeve. 4 Upon positioning of pipe sleeve, pit wall shall be made good using a mortar mix of 1 part

cement to 3 part sand.5 As hole is above local water table, no provision against ingress of water shall be required.6 When water pipe is correctly located through pipe sleeve, gap between water pipe and

pipe sleeve shall receive a mastic seal.7 Route of pipe from pit 21 to pipe sleeve in avenue C is indicated upon drawing 8 Pipe shall be located in a hand excavated trench above existing services.9 Where necessary, thrust blocks shall be installed to resist, whatever pressure movements.10 Relevant pipe fittings required to control and monitor water flow within pipe, shall be

located inside of pit 21.11 Area around pit and along route of pipeline shall be left clean of construction material. 12 Upon completion of project, water pipe shall be removed in accordance with instruction

of Operating Authority. 13 Fittings within pit provided by Civil Contractor shall be removed, leaving existing

Operating Authority valve and small vent pipe.14 Pipe sleeve through wall of pit 21 shall be capped with purpose made Upvc end caps that

may be removed at a later date for future use, if required.

Equipment1 Hand tools/Pipe jointing and cutting tools

Attachment1 Work permit/Drawing Site Sketch/Operating Authority drawing #

MS17Directional boring at 3# locations for 14”desalinated water pipe

corniche road North of gupIndexScope/Reference documents/Definitions/Responsibilities/Safety/Method/Equipment/Attachment




Scope1 Statement is aimed to propose procedures to be adopted to carry out directional boring

under existing culverts to facilitate laying sleeves for pipe lines 1 # 14” Desalinated Water at 3 # locations.

2 Concrete culverts are not in good condition and directional drilling or thrust bore is method preferred by Operator (RRD) for carrying out this work



in trench, hand excavation, work of excavation less boring in control areas.Method (sketch # 20 indicatively)

1 Application for obtaining permit to work shall be moved on to Plant Refinery Division supported with site location & preferred method statement for managing traffic diversion.

2 Work shall commence with only after, permit to work is obtained.3 Record drawings regarding existing services shall be obtained.4 Trial pits shall be made manually, on both ends of proposed boring to investigate/check

for existing services and to protect these services from possible damage, would also, be used for bentonite trial at receiving end.

5 All 3 cases shall be dealt with on an individual basis.

Case 1 1 Existing 1 box culvert and a 14” dia. pipe located about 1 m from culvert 2 A carbon steel sleeve 5 m long, dia. 20’is to be installed beneath box culvert (about 3m x

3m in section), 1 m below base by directional boring, so that 1 m projection remains on both sides of culvert.

3 14” dia. GRE pipe shall then pass through installed sleeve 4 For laying work pertaining to remaining portion of pipes other than sleeve shall be

carried out by ordinary approved procedures by excavation to required level, bedding, compaction and filling above portion over pipe and tested accordingly, after pipes are laid.

Case 21 Existing 1 box culvert and 1 pipe 1.5 m dia., located 2 m from culvert and 1 pipe 1 m dia,

located about 3.3 m below ground. 4 # existing services. 2 A sleeve 7.3 m long shall be installed beneath box culvert (about 3m x 3m in section), 1

m below base by directional boring, so that 1 m projection remains on both sides of obstructions approximately 2.5 m below existing ground.

3 14” dia. GRE pipe shall then pass through installed sleeve 4 For laying work pertaining to remaining portion of pipes other than sleeve shall be

carried out by ordinary approved procedures by excavation to required level, bedding,



Chapter 6 Infrastructurecompaction and filling above portion over pipe and tested accordingly, after pipes are laid.

Case 31 Existing 1 box culvert 2 A sleeve 5 m long shall be installed beneath box culvert (about 3m x 3m in section)

below base by directional boring, so that 1 m projection remains on both sides of culvert. 3 On site, sufficient excavated space is available to lower sleeve in to pull into bore4 Dewatering shall be carried out as per specification, if necessary5 Excavation shall be carried out according to requirement6 Boring shall be carried out in stages. 7 Pipes shall then be raised over existing 2 #s 60” dia. ABB cooling water lines at about 2.

3 m from existing ground level, so that top of pipes locates 1.2 m from ground level.8 For laying work pertaining to remaining portion of pipes other than sleeve shall be

carried out by ordinary approved procedures by excavation to required level, bedding, compaction and filling above portion over pipe and tested accordingly.

9 Work for portion to crossover other contractor/ABB pipes shall be carried out, after ABB pipes are laid and backfilled

First stage-1 Sleeve is in trench on one end and reamer fully underground.

Second stage-1 Sleeve is partly pulled in and reamer partly withdrawn

Third stage- 1 Sleeve further pulled and reamer withdrawn accordingly

Fourth stage-1 Full portion of sleeve is underground in bore and reamer out2 Excavated trenches on both ends shall be backfilled by Civil Contractor according to

specification requirement and required tests carried out3 Reinstatement of effected services shall be carried out, after directional boring is

completed

Directional Boring 1 A non excavation Method, which does not allow/result in collapsing of ground surface2 M/S Ditch Witch shall carry out Directional Boring employing Jet Trac Directional

Boring equipment meeting conformance/according to their approved method statement 3 Refer to attached sketches based on Ditch Witch guidelines 4 Bentonite is pure clay to be used as a fluid/slurry formed by mixing water. 5 It shall be used to cool drill bit and to lubricate drill area6 Material displaced by head/sleeves shall be discharged at receiving end in receiving pit

and removed from site7 All fully trained operators shall be employed/used on job




Major Equipment1 Jet Track Unit (complete package), Crane, Compactor

Attachment1 Cross Section Sketches showing 3 # cases

MS18Mdpe drinking water line ny lines testing


Scope1 Statement is aimed to propose procedures to be adopted to carry out testing of MDPE

water line – NY line


Safety1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting works related to pressure pipes testing in

control areas.

Method (sketch # 20 indicatively)Pretesting Preparation

1 It is deemed that line shall have been kept clean during storage and construction by keeping open ends capped.

2 That hydro test package checklist points have been verified and3 That line is released for hydro test and all safety precautions are taken. 4 It is important that backfill and compaction of line is done according to installation

procedures, as this shall prevent line from moving during pressuring as well as, providing protection against impacts, shade etc.

5 Joints shall not be backfilled, a taped off area shall be delimited around test pump, diameter of which area shall be 1.5 times length of test pressure hose between pump and blind flange, where only designated personnel shall have access to.

Hydro test Preparation1 All required temporary piping facilities make up dummy spools shall be installed.2 Main blind flange shall be fitted inter alia with a manifold, on which a pressure safety

valve adjusted at 1.5 times piping design pressure shall be connected.3 Calibrated pressure gauge ranging from 0 to 25 bar G with valid calibration certificate

shall be installed on line. 4 Pressure hose shall be connected to blind flange manifold through a NPT connector.5 Venting facilities- All steel blind flanges shall be provided with bleed valves & all high

points have venting facility.



Chapter 6 Infrastructure6 Line shall be filled with water one day prior to testing, so as to allow for thermal

stabilization overnight.7 Filling of sloped lines shall be done from lowest point with all vents open, which should

be closed only, when clear water with no air bubbles, comes through vents, while, filling pump shall be closed only, when all vents, are closed.

8 Pressure test pump, a triplex pump model shall be started and vents reopened to ensure all remaining air from pipe escapes& once closed, pressure should be taken up to field hydro testing pressure of 1.5 times design pressure respecting which, testing during periods are indicated below

Pressure Setting for Testing5 hours for pipe dia. up to 4”Main Pressure Testing1.5 times maximum design pressure must be held for following duration.3 hours for dia. up to 4”

1 Start time should be recorded.2 30 minutes standup time for stabilization and monitoring shall be done for every 5 bar G.3 At 1.5 operating pressure, starting time shall be logged.4 Test shall be monitored during this time. Pressure & temperature shall be monitored.5 Piping systems are designed to withstand 1.5 times design pressure of pipes and fittings.6 In an unlikely event, pressure rises above this point, safety valve shall release water,

which should be kept for re pumping at end of test period.7 After holding time, if no pressure drop exceeding 0.3 bar G/1000 m of line, hydro test

shall be considered as successfully passed.8 Pressure may then be slowly released and line gravity drained back.9 If pressure abnormally drops during testing indicating a leak, pumping may be continued

until leak is detected. 10 Leak shall then be repaired and after de pressurizing and draining line, procedures 2 to 11

shall be followed.11 Hydro test package shall be submitted in advance for COMPANY/EPC Contractor’s

review.12 Required representatives shall complete and sign all paper work pertaining to test.

Notes:1 During all stages, utmost care shall be taken to avoid damage or shock to lines.2 Personal movement shall be kept to a minimum.3 Heavy equipment circulation shall be avoided.4 All Mechanical Compaction shall be stopped in vicinity.5 No loose rocks or boulders shall be closer that 1 (one) meter from trench edges.6 All civil works shall be stopped on line.

Attachment1 Test Pack format.

MS19



Chapter 6 InfrastructureTelephone cable to site office


Scope1 Purpose of this method statement, is to define procedure that shall be adopted for survey,

excavation and placement of telephone cable from etisalat manhole to north of project site to new site offices.

Reference documents1 Operating Authority work permit



@ road crossing, excavation in trench, hand excavation, work of telephone cable laying in control areas.

Method (sketch # 18/20 indicatively)1 Application for necessary permits shall be made & permitsobtained.2 Surveyor shall peg entire route of telephone cable on site. 3 Safety officer and supervisor shall scan route for existing services, using cat scan

machine. 4 All observations shall be recorded and indicated with spray paint upon ground.5 Supervisor shall instruct workforce about requirements of hand excavation near existing

services. 6 A trench shall be excavated approximately 600mm deep & standard width as admissible

in line to cable exavation requirementwidth. 7 Trench shall be excavated achieved with a smooth bottom either mechanically or

manually. 8 Dune sand shall be placed to a depth 75mm at trench bottom. 9 Telephone cables shall be placed in trench on dune sand bedding. 10 A further layer of dune sand shall be placed over cable giving 75mm of cover over

bedding. 11 Trench shall be reinstated with general fill to ground level duly compacted in layers.12 Marker posts shall be erected along, line of trench to indicate a telephone cable location.

Road CrossingsWhere cable has to cross a road, following procedure shall apply.

1 Road crossing shall be constructed in two sections/two halves with respective traffic diversions.

2 Barriers and warning signs shall be erected to protect section under construction.



Chapter 6 Infrastructure3 Safety officer shall scan route for all existing services.4 Asphalt shall be cut using a jackhammer with a spade tip & rubbish removed from site. 5 Trench shall be excavated using machine with all due cautions not to damage any

unknown services running under & removing spoil/excavated material to a transported to suitable place by dumper.

6 An UPVC duct 150mm diameter shall be placed in road crossing. 7 A stop end shall be erected /fixed to both ends of pipe. 8 Lean mix low grade concrete shall be placed and vibrated in road crossing trench. 9 Concrete shall be placed flush with level of road surface. 10 Wet hessian and polythene sheet shall be placed over fresh concrete for curing purpose. 11 Curing shall continue for 24 hours continuously.12 Barricades and warning signs shall be repositioned to protect second section of road

crossing. 13 Procedure for second section shall be similar to first one. 14 Asphalt shall be cut using a jackhammer with spade tip & rubbish removed from site. 15 Trench shall be excavated using machine with all due cautions not to damage any


16 Stop end placed in first section of road crossing shall be removed. 17 150mm UPVC pipe duct shall be extended from first section to side of road of section

two. 18 A new stop end shall be positioned at edge of road shoulder to contain concrete surround. 19 Concrete shall be placed, vibrated and cured as described for section one. 20 Road barriers shall be removed, when concrete has cured.

Equipment1 Excavator/Dump truck/Compactors/Compressor and jackhammer

Attachment1 None

MS20Electric cable from RLIP substation to civil contractor camp



excavation and placement of electric power supply cable from Plant Light Industrial Park substation to Civil Contractor camp substation.





Chapter 6 InfrastructureSafety

1 Refer to general provisions on 1st page of this chapter for relevant measures required2 This statement imports all provisions respecting permit to work, works related excavation

@road crossing, excavation in trench, hand excavation, work of electric cable laying, bedding, filling in control areas.

Method (refer to traffic diversion sketch)1 Application for work permit shall be made & obtained.2 Surveyor shall peg/setout route of electric power supply on site. 3 A section of this route is within new area of Civil Contractor camp facility.4 Remainder of route follows existing cables that supply to other contractors camps.5 Safety officer and supervisor shall scan route for existing services using cat scan

machine. 6 All observations shall be recorded and indicated with spray paint upon ground.7 Supervisor shall instruct workforce about requirements of hand excavation near existing

services.8 Within Civil Contractor camp area, trench shall be excavated by machine.9 Trench shall be excavated approximately 600mm deep with standard width according to,

as indicated on schedule for cable trench chart. 10 Trench shall be excavated achieving a smooth bottom manually/mechanically. 11 Dune sand shall be placed to a depth of 75mm at bottom of trench. 12 Electric power cable shall be pulled out of cable drums & placed in trench on dune sand

bed. 13 A further layer of dune sand shall be placed over laid cable with over 75mm cover. 14 Cable tiles shall be placed on top of dune sand covering cables. 15 Trench shall be reinstated with general fill to ground level. 16 A plastic warning tape shall be placed within general fill approximately 200mm below

finished grade level.17 Marker posts shall be erected along, line of trench to indicate electric cable location.

Road CrossingsWhere cable has to cross a road, following procedure shall apply.

1 Road crossing shall be constructed in two sections/two halves with respective traffic diversions.

2 Barriers and warning signs shall be erected to protect section under construction. 3 Safety officer shall scan route for all existing services.4 Asphalt shall be cut using a jackhammer with a spade tip & rubbish removed from site. 5 Trench shall be excavated using machine with all due cautions not to damage any


6 An UPVC duct 150mm diameter shall be placed in road crossing. 7 A stop end shall be erected /fixed to both ends of pipe. 8 Lean mix low grade concrete shall be placed and vibrated in road crossing trench. 9 Concrete shall be placed flush with level of road surface. 10 Wet hessian and polythene sheet shall be placed over fresh concrete for curing purpose. 11 Curing shall continue for 24 hours continuously.



Chapter 6 Infrastructure12 Barricades and warning signs shall be repositioned to protect second section of road

crossing. 13 Procedure for second section shall be similar to first one. 14 Asphalt shall be cut using a jackhammer with spade tip & rubbish removed from site. 15 Trench shall be excavated using machine with all due cautions not to damage any


16 Stop end placed in first section of road crossing shall be removed. 17 150mm UPVC pipe duct shall be extended from first section to side of road of section

two. 18 A new stop end shall be positioned at edge of road shoulder to contain concrete surround. 19 Concrete shall be placed, vibrated and cured as described for section one. 20 Road barriers shall be removed, when concrete has cured.

Equipment1 Excavator/Dump truck/Compactors/Compressor and jackhammer

Attachment1 None

MS21Water supply to civil contractor camp



excavation and placement of water supply pipe to Civil Contractor camp.




in trench, hand excavation, work of pipe laying, bedding, backfill in control areas.

Method1 Plan shall be charted out how to carry out this work.2 Surveyor shall peg route of water supply pipe on location site according to plan. 3 A section of this route is within new area of Civil Contractor camp facility. 4 Remainder of route is within easement of road 5. 5 Permit shall be required to be obtained for which, an application be made.



Chapter 6 Infrastructure6 Safety officer and supervisor shall scan route of water pipe for existing services using cat

scan machine. 7 All observations shall be recorded and indicated with spray paint upon ground.8 Route within easement area of road 5 shall be hand dug up to fence line of Civil

Contractor camp.9 Machine excavation within boundary of Civil Contractor camp can be conducted.10 Trench shall be excavated 700mm deep at bottom of which, a dune sand bed 75mm

thickness should be laid.11 Then 200mm dia. UPVC pipe shall be laid and jointed over laid sand bedding. 12 Sand backfill 75mm above pipe shall be placed in accordance to requirement. 13 Rest of trench shall be backfilled with general fill in layers in line to specifications.14 Trench shall be compacted using a plate vibrator on all layers.

Equipment1 Excavator/Dump truck/Compactors/Hand tools

Attachment1 None


Date post:	11-Apr-2017
Category:	Engineering
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6 infrastructure

Engineering