Western Power Safe Work ethod Statement Task details Description High Voltage Testing D 10697056 Approved by Work Practices anager Review team SWS Development Approval date ay 2013 Qualifications/icences required Valid Western Power Authorisations for the Task / Network Authority Card (correct level of authorisation) Permits required Sanction To Test (STT) Which Safety ifesavers are required for this task? Potential hazards associated with the task Category Hazard Category Hazard Category Hazard 1. Working at heights 2. Working with Electricity 3. Radiation 4. echanical adders ifting equipment, scissors / EWP Scaffolding Stairs / platforms Working at height Working above others ultiple work requiring EWPs Static electricity / induction Substations / switch rooms Underground cables Contact with electrical equipment Electrical cables High voltage equipment Overhead cables Non compliant earths, e.g. tagged / tested Infra-red icrowaves Ultraviolet light, i.e. sun X-ray aser 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 5. Pressure 6. Human factors 7. Using mobile plant 8. anual handling (ergonomic) 9. Environment Competitive pressures Compressed gases / air Fluid High pressure steam Hydraulic Water Rushing Complacency Fatigue Unclear work direction Stress / anxiety / frustration ack of knowledge Poor communications Negative attitudes Traffic / pedestrian interaction / collision Uneven terrain Unlicensed / untrained operators Vehicle instability Vehicle access Awkward / unbalanced load High / low reach High force / heavy loads ighting Over exertion / fatigue Poor design / layout / surface Repetitive movements Air contamination Soil contamination Storm water contamination Waste, i.e. effluent / hazardous) Solid waste 10. Workplace 11. Chemical 12. Thermal 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 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 Cold ambient temperature Heat ambient temperature Hot materials / fluids Hot surfaces UV exposure Western Power Safe Work ethod Statement High Voltage Testing page 1 of 5
Job Steps required to perform the job, in the correct sequence Hazards for each job step Initial Controls required to eliminate or minimise the risk of Controlled References Plan and prepare Pre-plan Determine staff requirements Dehydration and breaks Staff skilled, trained and competent Valid licences NAC and D Plan work and site access Arrange for permits primary / secondary isolations SIS's requested / approved Weather conditions at work place PPE / PPC requirements inspection and testing Inspect / check tools and equipment Check for valid test date/ tagging of tools and electrical equipment Pre start checks to vehicles and trailer (if required) Secure loads Driving to work place fatigue Travel time and remote locations Advise office and formal leader of work plan Unfit for work: shock, burns, Fatigue:, harm Dehydration: harm ack of skills or knowledge: shock, burns, ack of competency or authority: shock, burns, Ongoing site construction / conditions:, harm Working on / near live primary apparatus: shock, burns, Working on / near live secondary apparatus: shock, burns Adverse weather (sun, rain, wind, lightning):, harm Inappropriate PPE / PPC: shock, burns, Damaged or faulty tools and equipment: shock, burns, Unauthorised tools and equipment: shock, burns, Faulty or out of test date PPE / tools / equipment: shock, burns, Unroadworthy or incorrectly set up vehicle / trailer combination: Inadequately secured tools and equipment: Climbing / loading vehicles / trailer: strain, sprain, Incorrect load distribution: anual handling / heavy objects: strain, sprain, Driving long distances: fatigue, Weather and road conditions: Vehicles, animals and pedestrians: Accident / breakdown / stranded at remote location:, harm Confirm staff are fit for work Comply with fatigue, drug and alcohol policies Plan to take breaks and keep well hydrated Ensure staff are trained / have appropriate competencies and valid licences Confirm staff have valid Network Access Card (NAC) and permit accreditation Plan to access site when conditions suit the task Communicate with System Operations Control Centre (SOCC) for a Sanction To Test (STT) Confirm SIS is approved and easily understood Complete fit for work form Check with SOCC and Bureau of eteorology (BO) for weather conditions Confirm staff have required safety clothing and equipment Ensure that gloves, hats, tools and equipment are within functional date cycle (if required) Confirm tools and equipment comply with WP standards Ensure test and inspection tags are current re-test and re-tag as required Inspect / check vehicles and trailer for road worthiness Ensure vehicle and trailer are correctly loaded and load secured use tie down straps aintain 3 points of contact when climbing Use mechanical aids to shift / lift heavy objects Share the driving (where possible) to avoid fatigue Drive to suit road and weather conditions Follow road regulations and keep within speed limits Notify formal leader / office of daily work plan Carry an emergency beacon or sat phone if travelling out of mobile phone / radio range Electrical System Safety Rules (ESSR) sections: 3.9, 3.10, 5, 7 Transmission Substation Work Practice anual (TSWP) sections: 2.2, 2.3, 2.12, 3.1, 3.2, 3.3, 3.4, 5.1, 5.2, 7.1 Safety ife Savers Journey anagement form Fitness For Work Standard Drug and Alcohol anagement Standard Work Instructions for Transformers Substations Protection Commissioning Appendix 1 Western Power Safe Work ethod Statement High Voltage Testing page 2 of 5
Job Steps Hazards Initial Controls Controlled References required to perform the job, in the for each job step required to eliminate or minimise the risk of correct sequence Workplace setup Correct location / apparatus Advise arrival (SOCC) Workplace risk assessment Check noticeboard for local hazards Weather conditions Designated safety observer (if required) Emergency procedures in place Earth vehicle / trailer (if required) Site security control unauthorised access Failure to observe the minimum approach distance (AD): shock, burns, Apparatus failure during switching operations: shock, No clear access / egress:, harm Slip, trip, fall, obstacles: Dust / fumes from nearby refineries / works: harm Weather rain, sun, wind, lightning: harm Induced voltage: shock, burns Damaged or faulty apparatus or equipment: shock, burns, anual handling: strain, sprain, Contact with live electrical apparatus: shock, burns, Uncontrolled site public access: shock, burns, Communicate with SOCC. Confirm apparatus access. aintain safe working clearances from live apparatus Conduct a risk assessment include all staff Cancel work if there is lightning activity in the area Ring other authorities / operations as advised on notice board in relay room Appoint a competent safety observer (if required) Ensure an emergency plan is in place and understood Ensure vehicle / trailer is earthed (if required) Use two-man lift technique or mechanical aids to lift heavy equipment Check condition of apparatus, tools and equipment Control access maintain substation / site security Use signs, barriers, flags and ropes to control unauthorised access to test site Continually review for potential hazards and controls 3.2, 3.3, 3.9, 3.10, 6, 9.1, 9.2 TSWP sections: 2.1. 2.2, 2.3, 2.8, 2.10, 2.12, 3.1, 3.2, 3.3, 3.4, 5.1, 5.2, 5.3, 5.4, 5.14, 7.1 Safety ife Savers Isolation and Permits Identify permit type for task Use SIS (if required) Communicate with SOCC / Issuing Officer for permit Tester in Charge (TIC) confirms isolations and permit conditions Permit issued (STT) Staff briefed on permit conditions All staff signed onto STT permit prior to access TIC to complete and relinquish permit when testing is complete Failure to obtain correct permit: shock, burns, Working on wrong apparatus: shock, burns, Failure to observe permit conditions: shock, burns, Contact with adjacent live apparatus: shock, burns, Induced voltages: shock, burns Contact with live secondary circuits: shock, burns, H aintain contact with SOCC / Issuing Officer aintain safe working clearances (AD) at all times Confirm primary and secondary isolations cross check apparatus physical ID against permit ID Follow SIS to ensure correct secondary isolations Check isolation points and locking systems are correct Check earths are fitted correctly and in the right place Discuss with all staff the permit conditions and the boundaries of the working area. Show if necessary. Ensure that all staff have signed on to the permit Ensure the work team is aware of the risk from induced voltages. Use working earths (as required) Evaluate possible induction prior to removing earths for testing All staff to sign off the permit when work is complete. (TIC to add condition of apparatus in comments section) Do not access apparatus after signing off the permit 7.2, 7.3, 12 TSWP sections: 2.2, 2.6, 5.4, 5.14 Western Power Safe Work ethod Statement High Voltage Testing page 3 of 5
Carry out the job Conduct tests Confirm permit conditions Test before touching Climbing access to plant Tie off ropes Fit bunting / piping ift items Wear harness Use ladders for access Walking on surfaces likely to be slippery Consult SDS for cleaning products Connect test cables / leads Remove all non-required earths prior to injection Apply test voltage Clearance from test voltage Record results Replace earths All items earthed and safe Disconnect test equipment Remove any applied shorts Evaluate condition of plant before relinquishing permit Contact with live electrical apparatus: Failure to test before connecting / disconnecting cables: Falling from heights: Failure to use tested and approved tools and equipment: shock, ifting, shifting and connecting test equipment: strain, sprain, Uneven / unstable ground / obstacles: strain, sprain, Exposure to cleaning products and oil spill: harm Induced / residual recovery voltage: shock, Recovery voltage shock to other teams following: shock Shorts not removed causing failure of apparatus: burns, Failure of unserviceable plant: burns, H Confirm staff know what has to be done and how to do it Confirm test cables are de-energised before connecting or disconnecting Use approved manual handling techniques. Two-person lift technique for heavy lifts or shifts Apply fall control measures for heights above 2 metres, e.g. safety harness, barriers Foot ladder for first climb and check / tie off fixing rope Flag off area with 'HV testing in progress' signs / flags Keep workplace clear of obstacles and trip hazards Avoid wet weather, clean up oil and control with peat / rags. Stop work and re-evaluate risk assessment. Use correct PPE when using cleaning products Report any environmental hazards inimise leads and keep leads tidy. Use one at a time Ensure correct test connection before applying test voltage Keep clear of exposed terminals of test set and apparatus under test Ensure a person is near the test set at all times to switch off the supply in an emergency Announce test set coming live and when test voltage is extinguished, announce safe aintain AD when moving or connecting test leads Use working earths when connecting / disconnecting test leads Ensure no residual recovery voltage is present for other personal or teams by applying an earth after testing Check with other crew members all leads (fuse wire) are removed and marked on Shorting medium control sheet Remove ladders and equipment form the plant and unit under test Confirm if apparatus is safe to return to service 3.2, 3.3, 3.9, 3.10, 5.7, 6, 9.1, 9.2, 12 TSWP sections: 2.2, 2.8, 2.11, 2.12, 2.13, 3.1, 3.2, 3.3, 3.4, 5.3, 5.5, 5.8, 5.14, 6.14, 6.10, 7.1 Safety ife Savers Complete the job Completion of tests Staff aware that work has ceased Communicate with SOCC / Issuing Officer Failure to sign off the permit and understand the changed conditions: Uneven / slippery surfaces / obstacles: Incorrect manual handling techniques: aintain safe working clearances Ensure all leads, tools and equipment are removed from the apparatus 3.12, 6, 7.3 TSWP sections: 5.3, 5.18, 6.10 Western Power Safe Work ethod Statement High Voltage Testing page 4 of 5
Relinquish STT permit Vehicle / trailer earth removed last (if used) Consult SDS for cleaning products Clean, inspect and stow tools, leads and equipment Secure loads Conduct debrief and sign off work place risk assessment document Report hazards that can't be fixed immediately Re-evaluate fatigue Vehicle travel Secure site when leaving Unsecured loads: Contamination from cleaning products:, harm Correctly dispose of cleaning products and waste material:, harm, environmental damage Failure to conduct debrief: missed hazards and improvements Driving long distances fatigue, Weather and road conditions: Communicate with SOCC / Issuing Officer and advise status of job Ensure the permit is signed off and staff aware of the changed conditions Use correct PPE when using cleaning products Use two-person lift technique or mechanical aids to lift heavy equipment Ensure test equipment, leads and tools are correctly stowed and secure for transport Sign off risk assessment and discuss any issues with whole team All staff involved in debrief. Document suggested improvements. Raise Query trouble if required, add photos and information for rectification, make safe if possible Contact SOCC and confirm network status at workplace prior to departure Confirm site is secure when leaving Obey road rules drive to conditions. Plan the trip to avoid long periods of driving without a break, where possible share the driving, country work stay over, use taxi Safety ife Savers Western Power Safe Work ethod Statement High Voltage Testing page 5 of 5