Appendix C2 - NTEPA · Appendix C2 Conceptual Traffic ... Name Callan Jones Callan Jones Paul...

Appendix C2Conceptual Traffic Management Plan

C2

Conceptual Traffic

Managem

ent Plan

Intrapac

Noonamah Ridge Estate

Conceptual Traffic Management Plan

Issue | 16 November 2015

This report takes into account the particular

instructions and requirements of our client.

It is not intended for and should not be relied

upon by any third party and no responsibility

is undertaken to any third party.

Job number 240596-00

Arup

Arup Pty Ltd ABN 18 000 966 165

Arup

Level 17

1 Nicholson Street

East Melbourne VIC 3002

Australia

www.arup.com

| Issue | 16 November 2015 | Arup

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Contents

Page

1 INTRODUCTION 1

1.1 Report Purpose 1

1.2 Previous Documents 1

1.3 Report Structure 1

1.4 Objectives 3

1.5 Referenced Documents 3

1.6 Glossary of Terms 3

1.7 Definitions 4

2 PROJECT OVERVIEW 6

2.1 Proposed Development 6

2.2 Commencement / Expected Duration Of Works 7

2.3 Constraints 7

2.4 Project Representatives 7

2.5 Responsibilities / Accreditation 7

3 SAFETY PLAN 10

3.1 Damage To Services 10

3.2 Dangerous Goods / Hazardous Conditions 10

3.3 Emergency Services 10

3.4 Failure Of Services 11

3.5 Incident / Accident Procedures 11

3.6 Mobile Phones 11

3.7 Night Work Provisions 11

3.8 Noise 12

3.9 Personal Protective Equipment (PPE) 12

3.10 Protection Of Excavations 12

3.11 Radio Communications 12

3.12 Setting Up And Dismantling 12

3.13 Trip Hazards 12

4 ENVIRONMENTAL CONDITIONS 14

4.1 Dust / Fog / Smoke 14

4.2 Heat And Humidity 14

4.3 Lightning 14

4.4 Rain 14

4.5 Terrain 14

4.6 Wind 15





5 TRAFFIC CONDITIONS 16

5.1 Traffic Volume 16

5.2 Existing / Proposed Speed Restriction/S 16

5.3 Lane Widths And Capacity 16

5.4 Impact On Adjoining Network 16

5.5 Parking Facilities 16

5.6 Public Transport 16

5.7 Access To Adjoining Properties 16

5.8 Non-Vehicular Road Users 16

5.9 Access For Work Vehicles And Personnel 17

6 MISCELLANEOUS 18

6.1 Audit Provisions 18

6.2 Records 18

6.3 Special Events And Other Works 18

6.4 Traffic Control Devices 18

6.5 Variations To Standards 18

7 RISK MANAGEMENT 19

7.1 Hierarchy of Control 19

7.2 Risk Assessment 20





Page 1

1 INTRODUCTION

1.1 Report Purpose

Arup has been engaged by Byrne Design on behalf of Intrapac to prepare the

conceptual Traffic Management Plan (TMP) to support the EIS of the Noonamah

Ridge Estate (NRE) Development located within the Shire of Litchfield as shown

in Figure 1.

This Traffic Management Plan (TMP) is designed to provide an outline of the

approach to traffic management that is expected to be adopted by the principal

contractor and traffic control service provider during works associated with the

construction of the proposed development. This is in order to maximise safety in

the workplace whilst making all reasonable attempts to minimise disruption to

road users and other members of the public. The traffic guidance scheme may

include measures such as lane closures, temporary speed limit installation, traffic

diversion/s, signage installation, public communication and other temporary

measures to warn, instruct and guide road users in the safe negotiation of the work

site.

This document would be further developed in consultation between the proponent

and key stakeholders once the details of the construction works are further

defined.

1.2 Previous Documents

Other documents that should be read in conjunction with this report include:

NRE Transport Impact Assessment (TIA), Arup, 25 August 2015: an

assessment that focuses on the transport impact as a result of the development

for various stages; and

NRE Construction Monitoring Report, 16 November 2015: a document

that provides an overview of the approach to monitoring impacts associated

with the construction of the proposed development.

1.3 Report Structure

The report is structured as follows:

Section 1 introduces the TMP (this section);

Section 2 describes a summary of the project;

Section 3 outlines the safety plan;

Section 4 outlines the environmental conditions;

Section 5 outlines the traffic conditions;

Section 6 describes other miscellaneous conditions;

Section 7 outlines the risk management approach.





Page 2

Figure 1 Site location





Page 3

1.4 Objectives

The objectives of this TMP are to:

to establish efficiencies, consistencies and good understanding of the required

commitment to safety.

provide a safer working environment thus minimising the risk of injury and/or

property damage for all workers, road users and members of the public.

safely and efficiently manage the safe passage of all road users through, past

or around the work site 24 hours a day, from possession of the site to

completion of all works.

minimise disruption, congestion and inconvenience to all road users and other

members of the public.

1.5 Referenced Documents

NT Work Health and Safety (National Uniform Legislation) Act 2011.

NT Work Health and Safety (National Uniform Legislation) Regulations

2011.

NT Control of Roads Act 2011.

NT Traffic Act 2010 NTDOI Technical Requirements for Works Within the

NT Government Road Reserve

Australian Standard AS1742.3-2009; Manual of uniform traffic control

devices – Part 3: Traffic control for works on roads. The exception is where

expressly overridden by the NTDOI Technical Requirements for Works

Within the NT Government Road Reserve.

AS/NZS ISO 31000:2009; Risk management – principles and guidelines.

AS/NZS 4602; High visibility safety garments.

AS/NZS 4192; Illuminated flashing arrow signs.

AS/NZS 1906.1; Retro-reflective materials.

AS/NZS 3845; Road safety barrier systems.

AS 4191; Portable traffic signals.

NT WorkSafe; All relevant bulletins.

1.6 Glossary of Terms

AS Australian Standard

AS/NZS Australian and New Zealand Standard

NTDOI Northern Territory Department of Infrastructure

NTMVR Northern Territory Motor Vehicle Registry

NTRTO Northern Territory Registered Training Organisation





Page 4

OH&S Occupational Health & Safety

TCD Traffic Control Diagram

TMP Traffic Management Plan

VPH Vehicles Per Hour

WZTM Work Zone Traffic Management

1.7 Definitions

Built-up area

Roadside development comprising property accesses at frequent spacing’s over a

specified distance.

Dimension D

A distance expressed in metres for the positioning of advance signs and related

purposes determined in accordance with the speed of traffic.

Long-term

The description which applies to a work site and/or traffic guidance scheme

operating in excess of a single work shift, both day and night, and may be left

unattended.

Open road area

Roadside development comprising property accesses over large spacing’s over a

specified distance.

Road user

Any driver, rider, passenger or pedestrian using the road.

Roadway

The portion of the road devoted particularly to the use of vehicles, inclusive of

road shoulders and auxiliary lanes.

Shall

Indicates that a statement is mandatory.

Should

Indicates that a statement is a recommendation.





Page 5

Short-term

The description which applies to a work site and/or traffic guidance scheme that is

required only while work personnel are in attendance that is generally limited in

duration to a single work shift or lesser period of time where after road conditions

are returned to normal.

Traffic

All vehicles, persons or animals travelling on a road.

Traffic guidance scheme

An arrangement of temporary signs and devices to warn traffic and guide it

through, past or around a work area or temporary hazard.

Work area

The specific area where work is being conducted.

Work site

An area which includes the work area/s and any additional length of road required

for advance signing, tapers, delineation, detours, or other areas for associated

purposes.





Page 6

2 PROJECT OVERVIEW

2.1 Proposed Development

The concept master plan for NRE is provided in Figure 2 with Table 1 providing a

breakdown of the high level development programme.

NRE is a development 36km south-east of Darwin

CBD. The site is currently undeveloped with

occasional residential, agricultural and other rural

activities. NRE is proposed as a master-planned

rural and per-urban community, with a range of

living alternatives. It is envisaged to comprise

approximately 4,155 homes accommodating

around 11,000 people, and will be delivered over

approximately 27 year timeframe. It will consist

of two rural activity centres, potentially including

local shops and services, as well as community

facilities. An enterprise area is also proposed.

Further information on the proposed development

is discussed within the TIA report.

Figure 2 Concept master plan

Table 1 Development program

Stage Timeframe (Year) Land Uses Land Area (ha) No. Residential Lots

Stage 1 1 – 6 Residential

Village Centre

320

1.6

640 lots

Stage 2 7 – 10 Residential 301 611 lots



Stage 5 21 – 22 Residential

Enterprise Area

202

192

405 lots







Page 7

2.2 Commencement / Expected Duration Of Works

TBC

2.3 Constraints

It is acknowledged that construction works may impact traffic flow especially

during peak periods. It is recommended the TMP consider works to ensure traffic

flow is not impeded in the urban area from Monday to Friday, excluding public

holidays, between 07:00 and 09:00 and between 15:30 and 17:30.

2.4 Project Representatives

Road Authority:

NT Government Department of Infrastructure; 2nd Floor Highway House,

Palmerston Circuit, Palmerston NT 0831; and

NT Government Department of Transport, Transport Infrastructure Planning

Division; Level 1 Energy House, 18-20 Cavenagh Street, Darwin NT 0801.

Client / Project Management:

Intrapac (Project Management will be confirmed closer to construction start

date)

Principal Contractor:

TBC

Traffic Management Plan Designer / Traffic Management

Provider:

TBC

2.5 Responsibilities / Accreditation

2.5.1 Hierarchy of Responsibility:

Intrapac ↦Contractor↦ Site workers, Subcontractors, Traffic Control

2.5.2 Project Manager / Site Supervisor:

The project manager has the ultimate responsibility to ensure this TMP is

implemented in full for the prevention of injury and property damage to

employees, other contractors, sub-contractors, road users and all members of the

public.

The project manager shall:





Page 8

ensure all site personnel are fully aware of their responsibilities and are

instructed concerning hazards and how to avoid injury.

provide safety equipment, protective clothing and devices, first aid facilities

and ensure all personnel observe good safety practices at all times.

ensure all construction workers, including traffic management personnel,

involved with the project are accredited to safely work in the construction

industry.

ensure that traffic controllers have been appropriately trained and that

sufficient traffic controllers are available to ensure appropriate breaks are

taken.

ensure all traffic control measures are placed and maintained in accordance

with this TMP prior to the commencement of works.

ensure suitable communication and consultation with affected stakeholders is

maintained at all times.

ensure inspections of the traffic management are undertaken in accordance

with this TMP, and results recorded.

review feedback from field inspections, worksite personnel and members of

the public, and take action to amend the traffic control measures as appropriate

following approval from the TMP Designer and the Road Authority’s

Representative.

arrange and/or undertake any necessary incident / accident investigations.

2.5.3 Workers and Sub Contractors

Workers and subcontractors shall:

have accreditation to safely work in the construction industry.

correctly wear high visibility clothing, in addition to other personal protective

equipment (PPE) required (e.g. protective footwear, eye protection, safety

helmet, sun protection, respiratory devices, safety harnesses, etc.), at all times

whilst on the work site.

comply with the requirements of this TMP and ensure no activity is

undertaken that will endanger the safety of other workers, road users or

members of the public.

enter and leave the site by approved routes and in accordance with safe work

practices.

obey all instructions from traffic control personnel.

2.5.4 Traffic Management Plan Designer

Accreditation as a Traffic Management Plan Designer is a mandatory requirement

in the NT for planning, designing, drafting and modifying TMPs and conducting

the relevant risk assessment for works or events within or impacting upon road

reserves throughout the NT.





Page 9

It is recommended:

TMPs not be appraised for appropriateness by any officer representing the

road authority for works or events within its road reserve unless the designer

has the appropriate level of accreditation and their accreditation number is

quoted on all TMPs.

at least one accredited Traffic Management Plan Designer shall be available to

attend the site at short notice at all times to manage variations, contingencies

and emergencies, and to assume overall responsibility for traffic management.

2.5.4.1 Work Zone Traffic Supervisor

The Work Zone Traffic Supervisor shall:

have the responsibility of ensuring the traffic management devices are

implemented and maintained in accordance with this TMP.

instruct Traffic Controllers on the relevant safety standards, including the

correct wearing of high visibility safety clothing.

undertake and submit the required inspection and evaluation reports to

management.

render assistance to road users and stakeholders when incidences arising out

of the works affect the network performance or the safety of road users and

workers.

take appropriate action to correct unsafe conditions, including any necessary

modifications to the TMP.

2.5.4.2 Traffic Controllers

Traffic Controllers shall be used to control road users to avoid conflict with plant,

workers, traffic and pedestrians, and to stop and direct traffic in emergency

situations.

Traffic Controllers must be briefed on the work activity including details of work

sequences to ensure clear and effective traffic control instructions are given to

road users.





Page 10

3 SAFETY PLAN

3.1 Damage To Services

In the event that utilities services such as gas or electricity are damaged, the TMP

should consider potential measures such as:

stopping work immediately;

turning off machinery and vehicles;

clearing the area of personnel;

deploying Traffic Controllers (and other personnel if necessary) to ensure no

traffic or other road users approach the area;

calling NT Police and the relevant supply authority.

Damage to other less critical utilities services such as water or sewerage may be

treated in a similar manner except machinery may remain operational and access

may be maintained where it is safe to do so.

All site personnel shall be briefed on evacuation, muster area and control

procedures at a daily prestart tool box talk.

3.2 Dangerous Goods / Hazardous Conditions

The TMP would expect to consider:

Transportation of bitumen shall only be conducted by appropriately qualified

and competent personnel.

The arrival of trucks carrying bitumen, fuel or other miscellaneous dangerous

goods to or through the site shall be communicated to the site supervisor by

the traffic controller/s.

All site personnel shall be briefed on evacuation, muster area and control

procedures.

3.3 Emergency Services

As part of the construction works, an objective shall be to not have a significant

impact on emergency services. If emergency services may be impacted due to

TMP works (temporary speed restrictions and lane closures etc.) it is

recommended emergency services to be notified in writing of the nature of works,

location, date/s and times.





Page 11

3.4 Failure Of Services

3.4.1 Failure of Street Lighting

In the event of street light failure, the TMP should consider contacting the Power

and Water Corporation. If street lighting cannot be repaired within a reasonable

period of time, sufficient portable lighting is not readily available and/or if it is

deemed unsafe for workers and road users alike, it may be necessary to cease

works and remove all delineation from the traffic lanes until such time as repairs

may be made.

3.4.2 Failure of Power

TBC with contractor if mains power is required for works to proceed.

3.5 Incident / Accident Procedures

In the event of an incident or accident, whether or not involving traffic or road

users, the TMP shall consider measures such as:

stopping work and traffic as necessary to avoid further deterioration of the

situation.

administering first aid, and medical assistance shall be called for if required.

reporting any traffic crash resulting in injury to the NT Police.

broken down vehicles and vehicles involved in minor non-injury crashes shall

be temporarily moved to the verge as soon as possible after details of the crash

locations have been gathered and noted. Where necessary to maintain traffic

flow, vehicles shall be temporarily moved into the closed section of the work

area behind the bollards, providing there is no risk to vehicles and their

occupants or workers. Suitable recovery systems shall be notified to facilitate

prompt removal of broken down or crashed vehicles. Assistance shall be

rendered to ensure the impact of the incident on the network is minimised.

Details of all incidents and accidents shall be reported to the Project Manager as

soon as practicable using an Incident / Accident Report Form.

3.6 Mobile Phones

Traffic Controllers shall not, under any circumstance, use mobile phones whilst

actively controlling traffic.

Mobile phones, if taken to a work site, should be left in a work vehicle at the

owner’s risk. Under no circumstance shall a call be made or answered whilst

situated on or adjacent to a roadway and/or within the work area.

3.7 Night Work Provisions

TBC with contractor if night works are being undertaken on this project.





Page 12

3.8 Noise

There are no known nearby facilities which require specific noise limiting

measures.

3.9 Personal Protective Equipment (PPE)

3.9.1 High-visibility Clothing for Work Personnel

High-visibility clothing shall be worn by all personnel working in or adjacent to

traffic, including traffic at work sites. The clothing is designed to make the

personnel more conspicuous and to warn road users of their presence.

3.9.2 Other PPE

All personnel entering the work site shall correctly wear other personal protective

equipment including, but not limited to, protective footwear, safety helmet, sun

protection, etc.) at all times whilst on the work site.

3.10 Protection Of Excavations

TBC.

3.11 Radio Communications

Portable two-way radios shall be used for communication between traffic

controllers as required.

3.12 Setting Up And Dismantling

Setting up of the traffic management shall be carried out starting at the

ROADWORKS AHEAD sign and proceeding to the END ROADWORKS sign.

Dismantling shall be carried out in the reverse order.

Signage displayed outside working hours shall be secured using spikes embedded

in the ground or wired to suitable existing infrastructure or erected on temporary

signs legs with suitable weighting for stabilization from wind, etc.

Devices no longer required shall be promptly and completely removed from road

users lines of sight.

3.13 Trip Hazards

The work site and its immediate surroundings shall be suitably protected and free

of hazards which could result in tripping or falling by workers and non-vehicular

road users. Hazards which cannot be removed shall be suitably protected using

temporary steel pedestrian exclusion fencing to prevent injury to workers and road

users, including those with sight impairment. Where level differences are





Page 13

significant, temporary steel pedestrian exclusion fencing shall be installed to

prevent access.

Where works extend beyond daylight hours and adjacent lighting is insufficient to

illuminate hazards to workers and non-vehicular road users, appropriate

temporary lighting may be installed.

The work site shall be kept tidy to reduce the risk to workers and other non-

vehicular road users.





Page 14

4 ENVIRONMENTAL CONDITIONS

4.1 Dust / Fog / Smoke

The work area shall be watered as necessary to prevent dust generation by works

vehicles and machinery.

Where sight distances are significantly reduced by dust, fog, smoke, or similar,

and/or if it is deemed unsafe for workers and road users alike, it may be necessary

to cease works and remove all delineation from the traffic lanes until conditions

return to normal.

4.2 Heat And Humidity

Extremes of heat and humidity are experienced in the Northern Territory however

there is no single factor such as a “maximum allowable temperature” which may

be applied in a workplace as a “cease work” limit.

Traffic controllers actively controlling traffic using a STOP/SLOW bat shall, as a

minimum, be relieved from their duty after not more than 2 hours for a period of

rest or other duties of at least 15 minutes.

4.3 Lightning

Traffic controllers shall avoid actively controlling traffic using STOP/SLOW bats

whilst lightning is prevalent within close proximity.

As far as practicable, where traffic controllers are positioned to actively control

traffic using STOP/SLOW bats, contractors and subcontractors shall be aware of

approaching storms with the potential for lightning and shall take appropriate

action in preparation to return the roadway to normal in order that delineation may

be removed and traffic controllers stood down temporarily from their duties to

seek appropriate protection.

4.4 Rain

In the event of rain, sign spacing and tapers may be extended, within allowable

tolerances, by approximately 25% to account for increased stopping distances. All

changes shall be recorded in the daily diary.

In the event of extremely heavy rain causing road flooding and/or sight distance

issues, it may be necessary to cease works and remove all delineation from the

traffic lanes until conditions return to normal.

4.5 Terrain

In some locations such as Elizabeth Valley Road, the vertical geometry of the

roads impacts on line of sight distances. The TMP should consider measures such

as reducing speed and traffic controllers to ensure the works can be undertaken in





Page 15

safe conditions. Further details on management measures should be provided

once construction routes are known.

4.6 Wind

Signage and delineation shall require additional weighting, placement of bollard

bases or similar, for stabilization during periods of high wind.





Page 16

5 TRAFFIC CONDITIONS

5.1 Traffic Volume

Refer to the Transport Impact Assessment Report issued by Arup on 28 August

2015 for existing traffic volumes in vicinity of the site.

5.2 Existing / Proposed Speed Restriction/S

The existing speed limit for each road and the operating speed (85th percentile)

will be estimated to be no greater than the original posted speed limit.

Temporary speed restrictions shall be considered on all approaches to

intersections if:

Whilst personnel are present and working within 1.2m of the travelled path of

vehicles.

Whilst traffic controllers are required to continually control traffic using a

stop/slow bat.

5.3 Lane Widths And Capacity

Minimum lane widths of 3m will be maintained during working hours and

minimum lane widths of 3.5m will be maintained at all other times.

5.4 Impact On Adjoining Network

Minimal traffic congestion is expected.

5.5 Parking Facilities

There are no existing parking facilities that will be affected by the work site.

5.6 Public Transport

Public transport is not expected to be affected by the works being undertaken.

5.7 Access To Adjoining Properties

No other property accesses shall be affected by the works being undertaken.

5.8 Non-Vehicular Road Users

The TMP should consider the safety of pedestrians and cyclists within / near work

areas.





Page 17

5.9 Access For Work Vehicles And Personnel

The construction contractor shall establish a gated interim access to the site.

Work vehicles and personnel entering and leaving the worksite shall do so via this

gated interim access point. This shall be communicated to all by way of internal

memorandum.

Traffic control personnel may be used at the designated interim access point to

temporarily restrict traffic flow whilst works vehicles and personnel are entering

or leaving the worksite or parts thereof. Where traffic controllers are not used to

restrict traffic flow, works personnel are to give way to all road users and proceed

with extreme caution whilst entering / exiting the worksite or crossing active

traffic lanes.

Advance warning signage shall be installed advising other road users of the

construction vehicles entering ahead.





Page 18

6 MISCELLANEOUS

6.1 Audit Provisions

Given the limited detail in regards to the construction approach, this is a

conceptual TMP for future guidance. This document would be further developed

in consultation between the proponent and key stakeholders once the details of the

construction works are further defined.

6.2 Records

Frequent inspections shall be carried out if conditions are found to vary

significantly and recorded in a Daily Diary.

All variations to this TMP shall be recorded in a Daily Diary.

Incidents / accidents shall be recorded using an Incident / Accident Report Form

and shall be forwarded to the Project Manager.

6.3 Special Events And Other Works

There are no other known work sites within close proximity of this project. If this

changes where it is expected to impact construction works and the TMP, it is

recommended to revisit the TMP to make any required changes.

6.4 Traffic Control Devices

Should a situation arise that is not covered by this conceptual TMP which requires

the use of additional or reduced number of devices, they shall be recorded within

the Daily Diary as a variation, following prior approval by the Traffic

Management Plan Designer.

6.5 Variations To Standards

Significant variations shall not be carried out without prior consultation with the

Traffic Management Plan Designer, however minor adjustments to suit site and

work requirements are recommended with such changes to be recorded in the

Daily Diary.

In emergency situations, on-site variations shall be made and recorded in the

Daily Diary.





Page 19

7 RISK MANAGEMENT

The following sections outline the hierarchy of control as well as the risk

assessment methodology. The risk assessment is to be developed in the next

revision once the construction methodology is known and a contractor has been

appointed.

The risk assessment process shall be undertaken in accordance with Australian

Standard AS/NZS ISO 31000:2009; Risk management – principles and

guidelines.

7.1 Hierarchy of Control

Risk Treatments shall be based on the Hierarchy of Hazard Control. The

Hierarchy of Control forms a tiered approach to the management of workplace

hazards. Each control principle is listed in descending order according to its

preference and effectiveness.

Elimination

Remove the hazard completely, e.g. total and physical road closure / divert traffic

away from the work area.

Substitution

Swap the hazard for something less dangerous, e.g. undertaking drainage / service

works using trench-less technology.

Isolation

Lower the risk by restricting or preventing access to the hazard, e.g. temporary

road closure restricting access to non-local area traffic.

Engineering Controls

Lower the risk by using better equipment or processes, e.g. installation of safety

barriers, use of temporary traffic signals instead of traffic controllers in high risk

environments, reverse alarms on reversing plant.

Administrative Controls

Policies, rules or changes to the way a company and workers operate, e.g.

development of a traffic management plan and site safety plan, safe work

procedures for workers around mobile plant, procedures for installation/removal

of signage under traffic, safety induction/s and communication procedures,

variable message boards.

Personal Protective Equipment (PPE)

This should be used as a last resort and normally in conjunction with other control

measures, e.g. use of high visibility vests, night wands, etc.





Page 20

7.2 Risk Assessment

7.2.1 Methodology

The likelihood of an event or hazard occurring shall first be assessed over the

duration of the activity (i.e. “period of exposure”). For risk assessment purposes

the assessed likelihood shall then be proportioned for a “period of exposure” of

one year.

For Example: An activity has a duration of 6 weeks (i.e. “period of exposure” = 6

weeks). The event or hazard being considered is assessed as likely to occur once

every 20 times the activity occurs (i.e. likelihood or frequency = 1 event/20 times

activity occurs = 0.05 times per activity). Assessed annual likelihood or frequency

= 0.05 times per activity x 52 weeks/6 weeks = 0.4 times per year. Assessed

likelihood = C (i.e. Possible)

Table 2 Qualitative Measures of Likelihood

Level Descriptor Description

A Almost Certain The event or hazard is expected to occur in most circumstances -

will probably occur with a frequency in excess of 10 times per year.

B Likely The event or hazard will probably occur in most circumstances -

will probably occur with a frequency of between 1 and 10 times per

year.

C Possible The event or hazard might occur at some time - will probably occur

with a frequency of 0.1 to 1 times per year (i.e. once in 1 to 10

years).

D Unlikely The event or hazard could occur at some time - will probably occur

with a frequency of 0.01 to 0.1 times per year (i.e. once in 10 to 100

years).

E Rare The event or hazard may occur only in exceptional circumstances -

will probably occur with a frequency of less than 0.01 times per

year (i.e. less than once in 100 years)





Page 21

Table 3 Qualitative Measures of Consequence or Impact

Level Descriptor Injury Damage Traffic/ Network Performance

1 Insignificant First Aid

required /

immediate

return to work.

Less than

$5,000

Hourly traffic flow is equal to or less

than the allowable road capacity as

detailed in AS1742.3-2009. No impact

to the performance of the network.

2 Minor Minor medical

treatment / no

lost time injury

occurs.

$5,000 to

$10,000

Hourly traffic flow is greater than the

allowable road capacity and less than

110% of the allowable road capacity as

detailed in AS1742.3-2009. Minor

Impact.

3 Moderate Medical

treatment

required /

hospitalization /

WorkSafe

report.

$10,000

to

$20,000

Hourly traffic flow is greater than110%

and less than 135% of the allowable

road capacity as detailed in AS1742.3-

2009. Moderate impact.

4 Major Significant

injuries /

hospitalization /

WorkSafe

report / lost time

injury occurs

$20,000

to

$40,000

Hourly traffic flow is greater than

135% and less than 170% of the

allowable road capacity as detailed in

AS1742.3-2009. Major impact.

5 Catastrophic Death /

permanent

disability /

WorkSafe

prosecution.

More

than

$40,000

Hourly traffic flow is greater than

170% of the allowable road capacity as

detailed in AS1742.3-2009.

Unacceptable impact to the

performance of the network.

Table 4 Management Approach for Residual Risk Rating

Residual Risk Rating Required Treatment

E Extreme Risk HOLD POINT. Work cannot proceed. Avoidance or elimination of

risk preferred. Superintendent must review and sign-off.

H High Risk Treatment may look to reduce consequence or likelihood. If both is

impractical, Project Manager can approve treatment and signs off

activity.

M Moderate Risk Documented management procedure and prescribed risk treatment

subject to review by experienced management.

L Low Risk Managed in accordance with the approved standard management

procedures and documented standard work practices.

A Accept Standard informal and formal work practices manage such.





Page 22

Table 5 Qualitative Risk Analysis Matrix – Risk Rating

Consequence or Impact

Likelihood 1

(Insignificant)

2

(Minor)

3

(Moderate)

4

(Major)

5

(Catastrophic)

A (Almost

Certain)

L M H E E

B (Likely) L M H H E

C (Possible) A L M H E

D (Unlikely) A L M H H

E (Rare) A A L M M

7.2.2 Risk Assessment

The risk assessment is to be developed in the next revision once the construction

methodology is known and a contractor has been appointed.

Potential hazards that may require assessment include:

Traffic control personnel unaware of safe work practices.

Traffic control personnel suffering cuts and/or lifting injury whilst handling

signs/delineation/other equipment.

Traffic control personnel invisible to approaching motorists.

Traffic control personnel becoming dehydrated and subsequently suffering

heat stroke, ignoring safe work practices, misdirecting traffic, etc.

Traffic control personnel involved in traffic accident whilst driving traffic

control vehicle.

Traffic control personnel being struck by a vehicle whilst installing, operating,

monitoring or removing a traffic guidance scheme.

Traffic control / works personnel being struck by an item within the work

area.

Workers operating within close proximity of high-speed traffic.

Failure of motorists to observe the temporary work zone speed restrictions.

Closure of traffic lane/s and the use of traffic controllers to alternate traffic

flow via a single traffic lane reducing road capacity below a serviceable level

leading to traffic congestion during peak traffic periods.

Closure of traffic lane/s and/or the installation of temporary speed restrictions

reducing road capacity below a serviceable level leading to traffic congestion.

Closure of traffic lane/s creating a danger of rear-end / sideswipe / head-on

collision between merging traffic.

Parking of works vehicles / items of plant creating a traffic hazard.





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Works vehicles / items of plant entering to or exiting from the work area

creating a traffic hazard and a danger of rear end / sideswipe collision.

Pedestrians too close to and/or accessing work area suffering injury from

moving plant or trip/fall hazard.

Heat stroke.

Extremely heavy rain fall creating temporary road flooding and reducing sight

distance of approaching motorists.

Vehicle breakdown/crash causing obstruction to traffic and/or danger to

workers.

Construction activity creating a dust hazard reducing sight distance for

approaching motorists.

Signs dirty / damaged and hard to read.

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