Western Power Safe Work Method Statement

Task details

Description Install Pad Mount Transformer / RMU DM 10718118 Approved by Manager, Work Practices Review team SWMS Development Approval date February 2012 Qualifications/Licences required Valid Western Power Authorisations for the Task/ Network Authority Card (Correct level of authorisation) Permits required Electrical Access Permit (EAP), Sanction To Test (STT)

Which Safety LifeSavers are required for this task?

Potential hazards associated with the task Category Hazard Category Hazard Category Hazard

1. Working at heights

Ladders ; Lifting equipment, scissors / EWP Scaffolding Stairs / platforms Working at height Working above others Multiple work requiring EWPs

5. Pressure

Competitive pressures Compressed gases / air Fluid High pressure steam ; Hydraulic Water

2. Working with electricity

Static electricity / induction Substations / switch rooms ; Underground cables ; Contact with electrical equipment ; Electrical cables ; High voltage equipment Overhead cables Non-compliant earths (tagged/tested)

6. Human factors

; Rushing ; Complacency ; Fatigue ; Unclear work direction ; Stress / Anxiety / Frustration ; Lack of knowledge ; Poor communications ; Negative attitudes

3. Radiation

Infra-red Microwaves ; Ultraviolet light, i.e. sun X-ray Laser

7. Using mobile plant

; Traffic / pedestrian interaction / collision ; Uneven terrain ; Unlicensed / untrained operators ; Vehicle instability ; Vehicle access

10. Workplace

Asbestos Confined space / void space ; Falling objects ; General access ; Housekeeping Illumination / lighting Noise, i.e. exposure / nuisance Poor ventilation ; Protrusions Restricted visibility ; Restricted work area ; Slip and trip hazards ;Unauthorised personnel Unlabelled controls Vibration ; Wet / slippery ; Wind / storm activity Fog / mist / smoke Working in isolation ; Dust / particulates

8. Manual handling (ergonomic)

; Awkward / unbalanced load ; High / low reach ; High force / heavy loads Lighting ; Over exertion / fatigue Poor design / layout / surface ; Repetitive movements

11. Chemical

Chemicals / reagents Fumes / vapour / mist (e.g. SF6) Flammable gases Handling flammable materials Hazardous chemical exposure Solid chemical Splashes / burns Spills to ground or work area

4. Mechanical

Abrasive blasting / grinding Auto-start equipment Conveyors ; Equipment failure ; Hand and power tool ; Impact and crushing areas ; Pinch / cutting points Residual / stored energy ; Uncontrolled movement ; Unguarded moving parts Welding or cutting ; Crimping / connecting

9. Environment

Air contamination ; Soil contamination Storm water contamination Waste (effluent / hazardous) Solid waste

12. Thermal

; Cold ambient temperature ; Heat ambient temperature Hot materials / fluids Hot surfaces ; UV exposure

Western Power Safe Work Method Statement Install Pad Mount Transformer / RMU page 1of 5

Western Power Safe Work Method Statement Install Pad Mount Transformer / RMU page 2of 5

Steps

required to perform the task, in the correct sequence

Hazards for each task step

Initial Risk

Rating

Control required to eliminate or minimise the risk of injury

Controlled Risk

Rating

References

Plan and prepare Pre-plan Plan trip Pre-start checks on vehicles /

EWP / crane Valid test certificates for EWP /

crane (if required) Staff training up to date Consumer / land owner

notification (if required) Check if any weather (fire)

alerts Contact Dial Before You Dig (if

required) Notify Main Roads and local

council (if traffic management required)

Arrange traffic management (if required)

Notify Control Centre / issuing officer for DNAR / permit

Communicate with site administration or security (if consumer substation)

Failure to have correct PPE available: shock,

burns, injury Lack of skills / knowledge: shock, burns, injury Travelling to site fatigue, injury Vehicular traffic, pedestrian / animals collision Adverse driving weather wet slippery driving

conditions, poor visibility: injury Vehicle accident / breakdown or stranded at a

remote location: heat stress, harm Working / driving in high fire risk areas fires:

burns, injury Equipment failure: shock, burns, injury Unsecured material / equipment: injury Contact with underground utilities: shock, injury Failure to notify affected consumers (if supply

interruption required): public risk reliance on supply for health, safety and medical reasons

M

Correct PPE is available for all at the workplace Drivers have a valid licence for the vehicle they are driving Staff have training and accreditation to do the task Complete a pre-start check on the vehicles Plan the trip to avoid long periods of driving without a break,

where possible, share the driving Adjust driving to suit weather conditions and terrain Notify supervisor / office of daily plan Carry emergency beacon or sat phone if travelling out of

mobile phone / radio range Avoid planned work being done during extremes of weather

to minimise rushing, fatigue, frustration Ensure tools and equipment are suitable for the task Secure all equipment, tools and materials for transport Confirm the location of all utilities in the vicinity of the

proposed work Ensure an approved and accredited traffic management

company is used (if required) Confirm affected consumers have been notified of any

planned interruptions

L

Electrical System Safety Procedures (ESSP) sections: 3; 6; 11; 12 Work Practice Manual (WPM) sections: 2; 3; 5.6; 5.9; 5.10; 11 Underground Cable Installation Manual (UCIM), section 5 Main Roads Traffic Management for Works on Roads Code of Practice

Implement a traffic management plan (if required) Define the workplace Control unauthorised access

and vehicle movement

Vehicle and equipment movement: impact, injury Unprotected workplace: public risk of injury Unauthorised access: personal injury

H

Maintain control of workplace access at all times Confirm traffic management procedures and plans are at the

workplace and implemented (if applicable) Use lights, signs and barriers to prevent unauthorised

access

L

WPM section: 2.21 Main Roads Traffic Management for Works on Roads Code of Practice

Workplace setup Advise landowner / consumers

(if required) Conduct Workplace Risk

Assessment Plan (WRAP) review site plans and drawings

Awareness of underground utilities

Mark cables

Failure to wear PPE: shock, burns, injury Unfit for work: shock, burns, injury Lack of skills or knowledge: shock, burns, injury Slip, trip, fall, obstacles: injury Live electrical apparatus: shock, burns, injury Damaged or faulty plant and equipment: injury Abnormal network integrity: injury

H

Ensure correct PPE is worn by all at the workplace Apply fatigue management plan Apply drug and alcohol policy Apply body fit principles Confirm that land owners / consumers have been notified Use up-to-date maps and drawings Confirm the location of all utilities in the workplace Conduct a workplace inspection for hazards include all

L

ESSP sections: 1.6; 3; 4.7; 5; 6; 11; 12.7; 12.8 WPM sections: 2; 3; 5.9; 5.10; 7

Western Power Safe Work Method Statement Install Pad Mount Transformer / RMU page 3of 5

Steps required to perform the task, in the

correct sequence

Hazards for each task step

Initial Risk

Rating

Control required to eliminate or minimise the risk of injury

Controlled Risk

Rating

References

Conduct circuit location and phase rotation checks

Emergency procedures in place

Check EDD (if EWP used) Set up vehicles and equipment Staff fit for duty Training and accreditation Clean and inspect equipment Use approved and tested

equipment

Accessing the wrong apparatus: shock, burns Failure to test: shock, burns Induced voltages: shock, burns Contact with underground utilities: shock, injury Plant, tools, equipment failure: injury Working from heights: injury Falling objects: injury Fires: injury, Failure to notify affected consumers: reliance on

supply for health, safety and medical reasons

structures and apparatus on either side of workplace Conduct a team brief and staff sign onto the WRAP Appoint a safety observer with correct authority level Ensure an emergency plan is in place and understood Plant and vehicle operators have valid authority and know

equipment ratings and load limits Inspect and use fall arrest harness, lanyards and anchor

points (if required) Ensure EDD is working correctly (if applicable) Use stabilisers, pads, wheel chocks (if applicable) Earth vehicles (if applicable) Apply correct manual handling techniques, use mechanical

aids where possible Maintain clear area below workers aloft, EWP and crane Ensure fire fighting equipment, and people competent to use

it are at the workplace while work is carried out Use approved and tested tools and equipment Inspect / check tools and equipment to be used Continually review potential hazards and control methods

Distribution Construction Standards Handbook Underground Cable Installation Manual (UCIM), section 4

Isolation and permits Electrical Access Permit (EAP) Communicate with NOCC /

issuing officer Communicate with site

administration or security (if consumer substation)

Confirm the location of cables Excavate / expose cable for

testing / spiking / work (if required)

Apparatus isolated, tested, earthed and tagged

Electrical Access Permit (EAP) issued

Sanction to Test (STT) Communicate with NOCC and

issuing officer Confirm apparatus to be tested Confirm status of apparatus Sanction to Test (STT) issued

Failure to wear correct PPE: shock, burns, injury Failure of work team to understand the

conditions of the EAP or STT: shock, injury Failure to observe the minimum approach

distance (MAD): shock, burns, injury Failure to identify and test: shock, burns Testing on or near live electrical apparatus Operating / switching the wrong apparatus Incorrect / ineffective earthing: shock, burns Contact with live apparatus: shock, burns Induced / capacitive voltages: shock, burns Uneven/slippery surfaces: strain, sprain, injury Damaged or faulty plant and equipment: injury Failure of load bearing surfaces trench covers

/ ground: injury Cave in or collapse of excavation / trench: injury

H

Ensure correct PPE is worn at the workplace Maintain contact with Control Centre / issuing officer Use maps, plans and test equipment to locate all utilities Confirm switching program with Control Centre Avoid distractions while switching, testing and earthing Use approved and tested tools and equipment Confirm correct equipment has been isolated Test the conductors before applying earths Test / spike cable to prove it is de-energised (if required) Confirm cable is de-energised before removing spiking

equipment (if required) Apply correct tags at isolation points and as required Staff understand the conditions of the EAP or STT and are

aware of the boundaries of the working area Ensure that all staff have signed on to the EAP or STT Ensure the work team is aware of the risk from induced

voltages use working earths (if required)

L

ESSP sections: 3; 4; 5; 6; 11; 12 WPM sections: 2.8; 2.9; 2.10; 2.15; 3

Western Power Safe Work Method Statement Install Pad Mount Transformer / RMU page 4of 5

Steps required to perform the task, in the

correct sequence

Hazards for each task step

Initial Risk

Rating

Control required to eliminate or minimise the risk of injury

Controlled Risk

Rating

References

Carry out the task Install electrical apparatus

Set up vehicles and equipment Vehicles earthed (if required) Apparatus isolated and earthed

(if EAP required) Test before touching Excavate site (if required) Carry out work (under EAP or

STT permit) Complete cable joints and

connections Connect / check earthing Inspect, test and phase out DWCIs checked Complete documentation

Failure to wear correct PPE: shock, burns, injury Failure to understand the conditions of the EAP

or STT Unfit for work: injury, harm Failure to identify and test: shock, burns Incorrect / ineffective earthing: shock, burns Contact with live apparatus: shock, burns Contact with underground utilities: shock, burns Induced voltages / capacitance: shock, burns Obstacles / trip hazards: injury Vehicle, plant and equipment movement: impact Incorrect use of tools and equipment: injury Apparatus / equipment / tool failure: injury Moving machinery (pulleys, winches): injury Working at heights: fall, injury Falling objects: injury Manual handling: strain, sprain, fatigue, injury Uneven / slippery surfaces: strain, sprain, injury Failure of load bearing surfaces - trench covers /

ground: injury Cave-in or collapse of excavation / trench: injury Failure to inspect and test work: injury Noise: harm Hydraulic pressure: injury, harm

H

Ensure correct PPE is worn by all All staff understand the conditions of the EAP or STT Ensure that all staff have signed on to the EAP or STT Staff understand what they are to do and how to do it Test to confirm correct apparatus has been isolated The appointed safety observer is active and knows role Use maps, plans, and test equipment to locate cables and

other utilities (if required) Dig pot holes to locate underground utilities (if required) Ensure all excavation work is done in accordance with

approved methods Use only approved and tested tools and equipment Ensure tool and equipment operators have appropriate

competencies and know equipment ratings and limits Test and spike cables before cutting Mark cables immediately upon identification Confirm all conductors, including screen, has been

discharged and earthed before touching Ensure the work team is aware of the risk from induced

voltages and to use working earths as required Earth vehicles Maintain MAD from all unearthed apparatus Use qualified dogger and tag lines for lifting/crane work Inspect and test all work for compliance Continually review potential hazards and control methods

L

ESSP, sections: 3; 4.7; 5; 6; 8; 11; 12

WPM, sections: 2; 3; 5.6; 6.2; 7; 8; 9; 11

Subdivision 6 Excavations and earthworks

WorkSafe Code of Practice Excavation (2005)

Underground Cable Installation Manual (UCIM)

PTS 703 Safe Excavations near WP Assets

Network Standard 07/2011 Testing and Commissioning: section 3 (DM# 7892458)

Complete the task Inspect work for compliance All staff, tools and equipment

removed from apparatus Clean, inspect and stow tools

and equipment Remove waste material and

reinstate site Communicate with NOCC /

issuing officer Sign off EAP or STT Remove all working and

program earths Re-energise the network (if

Failure to wear correct PPE: shock, burns, injury Failure to inspect and test work: shock, burns, Failure of load bearing surfaces trench covers

/ ground: injury Cave in or collapse of excavation / trench: injury Vehicle and equipment movement: injury Unstable ground rollover: injury Uneven / slippery surfaces / obstacles: slip, trip Incorrect manual handling techniques: injury Plant / tools / equipment failure: injury Unsecured loads: injury Staff do not sign off permit and understand the

M

Ensure correct PPE is worn by all at the workplace Continue to use safety observer Conduct final workplace inspection Use correct manual handling techniques. Use mechanical

aids where possible Correctly dispose of waste material Material and equipment are correctly stowed for transport Make contact with NOCC / Issuing Officer All recipients understand that work is completed and sign off

EAP or STT Sign off WRAP and discuss any issues with whole team Document suggestions

L

ESSP sections: 3; 5; 8; 11; 12

WPM sections: 2; 3; 5.6; 5.7; 7; 8; 9; 11

Network Standard 07/2011 Testing and Commissioning: section 3 (DM# 7892458)

Western Power Safe Work Method Statement Install Pad Mount Transformer / RMU page 5of 5

Steps required to perform the task, in the

correct sequence

Hazards for each task step

Initial Risk

Rating

Control required to eliminate or minimise the risk of injury

Controlled Risk

Rating

References

required) Conduct tests and complete /

update documentation Remove tags Communicate with site

administration or security (if required)

Conduct team debrief Close off WRAP

changed conditions: shock, burns, injury Restoring / working on incorrect apparatus:

shock, burns, injury Incorrect switching technique: sprain, injury Missed hazards and improvements

Plan and implement a safe approach for switching Confirm correct apparatus / switch number before restoration

commences Inspect apparatus before operation / use Avoid distractions during switching Maintain safe working clearances Apply / remove correct tags and locks Confirm network status at worksite Complete and document commissioning tests Continually review potential hazards and control methods

Relinquish traffic management (if used)

Vehicle movement: injury Unauthorised workplace access: injury

M

Maintain traffic management until all personnel and

equipment have left site Remove all signs and barriers to restore traffic flow

L

WPM section: 2.21