Code of Practice Excavation

8/6/2019 Code of Practice Excavation

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Contents

1. Introduction 3

2. Planning and preparation 4

3. Work systems and control measures 10

4. Protection against contaminated environments 35

5. Inspection and maintenance of plant and equipment 42

6. Training and instruction 44

7. Personal protective equipment (PPE) 45

8. Legal requirements 48

Definitions

Appendix 1 Checklist - Hazard Identification, Risk Assessment and

Control Measures

Appendix 2 Example of a Hierarchy of risk control measures

Appendix 3 A typical example of a safe work method statement

Further Information

Page No.

Dial Before You Dig is a free referral service for receivinginformation on underground pipes and cables before you startwork.

All major utilities are members including Energy Australia,Integral Energy, Telstra, Optus, AGL and Sydney Water. Digging without maps means exposing yourself and yourcontractors to danger. Unexpected cable strikes can slow your job down. Damage to underground utilities can affect your insurance.

DONT RISK IT

Dial 1100 between 8am and 6pm on

working days

Fax 1300 652 077 anytime

THIS IS A FREE SERVICE


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Types of shoring and support systems include, but are notlimited to:

(a) sacrificial sets - stay in the ground indefinitely, may betimber, concrete etc.

(b) soldier sets - timber, steel proprietary(c) full timber systems

(d) trench supports (eg. shields, boxes or cages etc)(e) sheet piling(f) precast panels(g) diaphragm walls(h) rock bolts and ground anchors(i) caissons(j) sand bag (sand cement mix)(k) hydraulic systems(l) soil nails, shotcrete, etc(m)pneumatic systems.

These and/or other types of appropriate ground supportequipment should be on site before the excavation workcommences.

Figure 2 shows some of the common types of earth supportsystems.

2A. Soldier sets - TimberSteel, proprietory

2B. Precast Panels

Runners Extended to one metre aboveexcavation for fall protection

2C. Full Timber System

2D. Sheet Piling

2E. Trench Shields

2F. Rock Bolts

One Metre High Handrail System

Examples of Shoring

Figure 2

Figure 2


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5 A risk assessment should be conducted before operating plantSome hazardous substances have exposure standards that


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42

5.Inspectionandmaintenanceof plant and

equipment

A risk assessment should be conducted before operating plantto identify any hazards that may arise and the controlmeasures to be implemented. The risk assessment shouldconsider at least the following:(a) that appropriate guards, including roll-over protective

devices (ROPS) are fitted(b) that the safe working load is displayed(c) record of testing, maintenance, servicing and repair(d) the general mechanical/electrical condition of plant,

especially any wear or damage that may effect safeoperation

(e) compliance with relevant legislation and Australianstandards

(f) specific controls to prevent entanglement or workers beingtrapped between moving parts.

It is a legal requirement that all plant such as excavators,tractors, etc used for lifting must have their safe working loadsdisplayed and maintained.

If the function or condition of plant represents an immediaterisk to health and safety, operation should cease and the plantshould be withdrawn from use until a risk assessment andappropriate control measures are implemented.

5.1 Routine InspectionRegular planned inspection and adequate maintenance shouldbe carried out to ensure safe operation of all plant used onexcavation work, whether leased, hired or owned. Bothmechanical and electrical testing should be done. For furtherinformation refer to the WorkCover NSW publication Code ofPractice: Electrical practices for construction work. Thefollowing checks should also be carried out:

(a) Daily checks: general condition and maintenance of theplant should be checked daily by the person doing theexcavation work.

(b) Regular checks: the plant should be inspected by acompetent person on a regular basis, or at least everymonth.

5.2 Repairs and maintenanceThe contractor using the plant should implement themanufacturers recommendations. Repairs should be carriedout by a competent person and in accordance with thedesigners or manufacturers requirements.

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Some hazardous substances have exposure standards thatmust be observed. This may be particularly relevant forsubstances that are applied as a spray. Details of any exposurestandards are set out in the manufacturers MSDS.

For further information about using hazardous substances referto the WorkCover NSW publication Code of Practice ForControl of workplace hazardous substances.


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6463

CoverPage

One

of

FileNo.Officeuse

only

WORKMETHODSTATEMENT

Job/TaskorProcess:

PERSONNELDETAILS

EQUIPMENTDETAILS

Occupations

StaticPlantand

Trades/Skills/WorkTeams

Equipment

No.ofemployees

MobilePlantand

(Reqdtodotheworksafely)

Equipment

Qualifications

Safety/Emergency

Licenses/Qualifications/Permits

Equipment

Training

PersonalProtective

Completedand/orrequired

Equipment(PPE

)

JOBS/TASKS/PROCESSES

HAZARDS

CONTROLMEA

SURES

(Basicstepsinlogicalsequence-w

hatistobedone,nothow)

(Unsafeconditionsandunsafeacts)

(Safetymeasures/SafeWorkPractices/PPE)

1.makeitsafe:

2.getitready:

3.dothisfirst:

4.dothisnext:

5.makeitsecure:

6.cleanup/putaway:

Name:

Position:S

ignature:D

ate:

PROJECT:

CONTRACTO

R:

CoverPageTwo

of

FileNo.Officeuse

only

WORKMETHODSTATEMENT

Job/TaskorProcess:

SAFEWORKPRACTIC

ES:

PERSONALPROTECTIVE

EQUIPMENT:

1.

1.

2.

2.

3.

3.

4.

4.

5.

5.

6.

6.

WORKSEQUENC

E

POTENTIAL

RISK

PROPOSED

ACTION/

BASICJOBSTEPS

HAZAR

DS

SCORE

CONTROLMEASURE

Breakthejobdownintosteps.

Identifythehazardsasso

ciatedwitheachstep.

See

Specifywhataction/proceduresw

illbetakentoeliminateor

Eachstepshouldaccomplishsomemajortaskandbein

Examineeachtofindpossibilitiesthatcouldlead

HAZPAK

minimisethehazards,theriskof

injury/damage,and/or

alogicalsequence

toanaccident.

potentialseverityfactors.Include

themeasuretobetakento

ensuretheproposedcontrolswillbemaintained.

STEP1

STEP

Name:

Position:S

ignature:D

ate:

PROJECT:

CONTRACTO

R:

FurtherInformation

Location of ServicesThe NSW Dial Before you Dig service is available to assist inh l i f ll i ili i d f h N i l


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Information the location of all service utilities and as a part of the NationalDial Before you Dig service.

By ringing 1100, an excavator is automatically connected to theappropriate state service and can obtain information on thelocation of utilities and local government services. The service

operates from 7am to 6pm Monday to Friday and adviseswhich utilities have underground facilities in your area ofexcavation and then facilitates communication between allparties.

Excavators are asked to give at least two working days noticeof intention to excavate to enable plans and location details tobe forwarded. Enquiries may be faxed to 1300 652 077 at anytime for processing during office hours.

Useful publicationsNSW Workcover Codes of practice Code of practice: Electrical practices for construction

work. Code of practice: Noise management and protection

of hearing at work. Code of practice: Amenities for construction work. Code of practice: Tunnels under construction. Code of practice: Overhead protective structures. Code of practice: OHS induction training for

construction work. Code of practice for control of workplace hazardous

substances.

Guides A guide for front end loader and excavator drivers Guide for working near traffic and mobile plant Use of personal protective equipment at work - a guidance

note Skin cancer and outdoor workers - a guide for workers

Skin cancer and outdoor workers - a guide for employers How to prevent silicosis. A guide to dust hazards. HazPak Worksafe Exposure Standards for Atmospheric

Contaminants in the Occupational Environment Worksafe guidance Note for the Assessment of Health

Risks Arising from the Use of Hazardous Substances in theWorkplace.

65

Page

of

FileNo.Officeuse

only

WORKMETHODSTATEMENT

WORKSEQUENCE

POTENTIAL

RISK

PROPOSED

ACTION/

BASICJOBSTEPS

HAZAR

DS

SCORE

CONTROLMEASURE

Breakthejobdownintosteps.

Identifythehazardsasso

ciatedwitheachstep.

See

Specifywhataction/procedureswillbetakentoeliminateor

Eachstepshouldaccomplishsomemajor

taskandbein

Examineeachtofindpossibilitiesthatcouldlead

HAZPAK

minimisethehazards,theriskof

injury/damage,and/or

alogicalsequence

toanaccident.

potentialseverityfactors.Include

themeasuretobetakento

ensuretheproposedcontrolswillbemaintained.

STEP

STEP

STEP

STEP

PROJECT:

CONTRACTO

R:


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Code of Practice Excavation

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