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LEIA SAFETY CHARTER

LEIA SAFETY CHARTER. Safety Training Presentation No 3 Electrically isolate and lock off when power is not required and when working close to unguarded machinery. V5-11 November 2012. LEIA Safety Charter. Accidents

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LEIA SAFETY CHARTER

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  1. LEIA SAFETY CHARTER Safety Training Presentation No 3 Electrically isolate and lock off when power is not required and when working close to unguarded machinery V5-11 November 2012

  2. LEIA Safety Charter Accidents Over the last 20 years there have been 12 fatal accidents within the UK lift and escalator industry How have the fatal accidents occurred? • Falling from height • Crushing/ struck by moving equipment • Electricity

  3. LEIA Safety Charter

  4. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryThe Risk… • Approximately 20 fatalities per year in UK (all industries). • Electrical injuries caused by a range of voltages – dependant upon circumstances • 230V can, and does kill… • Equipment flashovers, burns, loss of muscle control, consequential falls from height etc.

  5. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryThe Risk… • Shock is the effect of current flowing through the body • Current does the damage • Causes muscles to contract, tissue damage and internal burning • Can cause cardiac arrest and respiratory failure • The higher the current: the shorter the duration for injury Electrically isolate and lock off when power is not required and when working close to unguarded machinery The Risk…

  6. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryThe Risk… • Threshold of sensation: 0.5mA • Threshold of pain: 5mA • ‘Let-go’ current ( ): 10mA • Ventricular fibrillation (heart spasms): 50mA • 60W light takes 250mA Source: DD IEC/TS 60479-1:2005 sufficient to cause spasms, but still allowing ‘let go’

  7. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinery Safe Working with Electricity • Always take precautions when working on or near live electrical equipment. • Lock and tag out the supply [or, if not possible, remove the fuses and take them with you] when power is not required to perform the task. • Ensure that you verify that the disconnection has been made • NOTE: Electrically isolate and lock off applies equally to escalators, service lifts, lifting platforms and other equipment in addition to conventional lifts

  8. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity • Always take precautions when working near electrical equipment. • These are the ones that survived

  9. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity Always take precautions when working near electrical equipment. • Lock and tag out the supply [or, if not possible, remove the fuses and take them with you] when power is not required to perform the task. NOT a good example of isolation Ellison switch with handle drilled and padlocked Isolator with handle drilled and padlocked Two engineers each apply their own locks to secure isolation by using multi-lock hasp lock off devices

  10. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity Always take precautions when working near electrical equipment. Lock and tag out the supply [or remove the fuses and take them with you] when power is not required to perform the task. • Ensure that you verify that the disconnection has been made Verify test device by confirming voltage present Verify test device on separate circuit Isolate Confirm isolated Lock Off and Tag Out

  11. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity Never assume the disconnection has been successful – you need to check that the disconnect is effective and secured

  12. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity Lock off and tag out to secure the equipment after isolating

  13. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity “The test lamp or voltage detector should be proved to be working on a known live source, proprietary proving unit or built-in test feature before and after use. All line, neutral and protective conductors of the circuit should be tested and proved to be dead.” The Electrical Safety Council Best Practice Guide 2

  14. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity Always take precautions when working near electrical equipment. Lock and tag out the supply [or remove the fuses and take them with you] when power is not required to perform the task. “The test lamp or voltage detector should be proved to be working on a known live source, proprietary proving unit or built-in test feature before and after use. All line, neutral and protective conductors of the circuit should be tested and proved to be dead.” The Electrical Safety Council Best Practice Guide 2 NOTE: The procedure for proving dead should be by use of a proprietary test lamp or two-pole voltage detector as recommended in HSE Guidance Note GS38: Electrical test equipment for use by electricians

  15. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity Consider other sources which could remain live – see later slide

  16. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity Regulation 14 Work on or near live conductors No person shall be engaged in any work activity on or so near any live conductor (other than one suitably covered with insulating material so as to prevent danger) that danger may arise unless - (a) it is unreasonable in all the circumstances for it to be dead; and (b) it is reasonable in all the circumstances for him to be at work on or near it while it is live; and (c) suitable precautions (including where necessary the provision of suitable protective equipment) are taken to prevent injury. Electricity at Work Regulations 1989

  17. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity • When the equipment must remain energized, effective insulation and safe electrical working practices must be used e.g. insulating rubber gloves, eye protection, insulating rubber mats on floor, insulating plastic shroud, all before accessing live parts, electrically insulated tools to minimise the risk of injury. • Avoid the chance of earthing yourself by removing or covering jewellery.

  18. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity • When the equipment must remain energized, effective insulation and safe electrical working practices must be used e.g. insulating rubber gloves, eye protection, insulating rubber mats on floor, insulating plastic shroud, electrically insulated tools so that there is no risk of injury. Precaution if equipment is accidentally live - use insulated tools (BS EN 60900) and maintain them in good condition –Standard says not more than 18mm exposed tip Fit an insulating shroud to protect against accidental contact with live terminals and wear eye protection to protect against flash Verification of rubber gloves Use an insulating rubber mat (BS 921) Wear insulating rubber gloves (BS EN 60903) until isolation is proven

  19. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity Without an insulating shroud it would be easy to make accidental contact with the live terminals The charred remains of an electricians glasses after being caught unprotected in a flash Poorly insulated tools – more than 18mm of tip exposed. These should be discarded Replacement leads required

  20. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity When the equipment must remain energised, effective insulation and safe electrical working practices must be used e.g. rubber gloves, rubber mats on floor, insulating plastic curtain, electrically insulated tools. • Avoid the chance of earthing yourself by removing or covering jewellery. Remove or cover watches, rings, necklaces (And bracelets? And earrings?)

  21. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity • Give yourself as much room as possible and remember – keep the area free of surplus materials. • There should be suitable light levels (200 lux) at point of work • Replace all equipment covers on completion of work as soon as possible.

  22. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity • Even though the mains three phase isolator to the control panel is switched off, other sources may remain live. Signals Transformers Door detectors Lighting Alarms Fans Signals Transformers Door detectors Lighting Alarms Fans Think of isolation during the whole process – not just in the controller. What about the rest of the installation? Are any other devices connected to the lighting circuit?

  23. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity • Even after all power has been isolated there is also the danger of electric shocks from sources of stored energy. Charged capacitors VF drives Charged capacitors VF drives

  24. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity • Even after all power has been isolated there is also the danger of electric shocks from sources of stored energy. Charged capacitors VF drives These should be marked, but what if they aren’t? These should be marked, but what if they aren’t?

  25. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinerySafe Working with Electricity Discharge these or take precautions against any stored energy with a Safe System of Work before working on them These should be marked, but what if they aren’t?

  26. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinery The Charter also covers works close to or on unguarded machinery

  27. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryBefore starting work on machinery... • Display a sign at all landings – discourages interference • Switch off the electrical or hydraulic supply and post a sign • Lock off the switch or remove the valve lever, or use another method to ensure that the supply cannot be restored while work is going on

  28. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryBefore starting work on machinery... • Display a sign at all landings – discourages interference

  29. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryBefore starting work on machinery... Display a sign at all landings – discourages interference • Switch off the electrical or hydraulic supply and post a sign Switch off electrical supply and/ or… …hydraulic oil supply… …and post a sign

  30. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryBefore starting work on machinery... Display a sign at all landings – discourages interference Switch off the electrical or hydraulic supply and post a sign • Lock off the switch or remove the valve lever, or use another method to ensure that the supply cannot be restored while work is going on Lock off the switch to ensure it cannot be restored while work is going on Remove hydraulic control lever and… …put it in a secure place

  31. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryWorking on machinery • Guards must be kept in position unless you need to remove them to carry out work • Machinery must not be operated with the guards removed unless:

  32. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryWorking on machinery • Guards must be kept in position unless you need to remove them to carry out work • Machinery must not be operated with the guards removed unless: it is not practicable to work on the equipment, diagnose faults, lubricate or adjust the equipment whilst stationary and with the guards in position AND You have a safe system of work to do so

  33. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryWorking on machinery • Inspect ropes only whilst they are stationary and wear gloves to inspect them • Cleaning of rotating parts: ropes, chains, sheaves etc. must be done with the power isolated. Restore the power only to move the machinery to a new position and isolate again

  34. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machineryWorking on machinery • After handwinding, remove separate winding wheel and brake release • After completing the work re-fix the guards with the correct number of bolts or screws • Before supply is restored check no-one will be harmed

  35. LEIA Safety Charter Electrically isolate and lock off when power is not required and when working close to unguarded machinery Supervision • HSE advise that supervision arrangements must be appropriate and proportionate to the risk – work on or near to live conductors, inexperienced staff etc… • Personnel under training need to be supervised • Auditing arrangements for peripatetic workers • Ideally a formal inspection when manager goes on site to review and record evidence of safe working procedure.

  36. LEIA Safety Charter

  37. LEIA Safety Charter LEIA Safety Charter • Protect yourselves and others from falls and falling objects. • Use and verify Stop and other devices when accessing, egressing and working on car tops and in lift and escalator pits to ensure total control of the equipment. • Electrically isolate and lock off when power is not required and when working close to unguarded machinery.

  38. LEIA Safety Charter LEIA Safety Charter • Now being incorporated into the new edition of the LEIA Site Safety Handbook. • We ask you to sign in this handbook, to commit to the three elements of the Safety Charter

  39. LEIA Safety Charter Thank You for attending

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