ESW- 8 :- Working in an Elevator Pit: Hazards and Safety Controls

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Elevator, Escalator & Moving Walk

Working in an Elevator Pit: Hazards and Safety Controls

The elevator pit is one of the most hazardous places a technician can work. Moving equipment, limited space, slippery surfaces, and electrical hazards are all present in a confined area below the lowest landing. Knowing the hazards and applying the right controls before you enter helps prevent serious injuries.

Hazards in the Elevator Pit

Moving and rotating equipment

• Crushing: the car or counterweight can come down to the bottom of the shaft.
• Rotating parts: the governor sheave and the compensator sheave.
• Moving cables: being struck by moving, travelling cables (trailing flexes).
• Adjacent lifts: moving components in neighboring shafts.
• Ropes and compensating chains: swinging or moving ropes and chains can strike or snag you.
• Buffers and plunger (hydraulic lifts): the buffers can compress, and a hydraulic car can descend if the system is not blocked.
• Car or counterweight moving unexpectedly: for example, from a brake fault, a control error, or another person operating the lift.

Slips, trips, and falls

• Falls: from the access ladder.
• Slips: oil on the pit floor.
• Trips: equipment left on the pit floor.
• Sumps: recesses or drains in the pit floor.
• Falling objects: tools or debris dropped from the landing, car, or car top above.
• Poor lighting: shadows and dark corners hide trip hazards and moving parts.
• Limited headroom and space: low clearance under the car and tight spaces increase the risk of striking your head or becoming trapped.

Electrical

• Electric shock from live circuits and equipment in the pit.
• Water and electricity: water in the pit increases the shock risk, especially near pit lights, sockets, and switches.
• Damaged cables and fittings: worn insulation on the lighting, sockets, or control wiring.
• Stored energy: capacitors, springs, and suspended loads can release energy unexpectedly.

Access and environment

• Unauthorized entry: people walking into the shaft through the bottom landing doorway.
• Accumulation of gases in the pit.
• Vermin in the pit.
• Discarded needles (sharps).
• Flooding and standing water: from leaks, rain, or burst pipes.
• Poor air quality: dust, fumes from nearby work, and low ventilation.
• Fire hazards: oil, rubbish, and oily rags in the pit.
• Confined-space conditions: a deep or cramped pit can restrict escape and rescue.
• Heat or cold: extreme temperatures in the pit can affect alertness and comfort.

Controls

Before You Enter the Pit

• Check that the travelling cables (trailing flexes) will not tangle with you before you descend the ladder.
• Do a quick visual check for signs of vermin or discarded needles. If you find either, ask building management to arrange removal before you start work.
• Gases do not usually present a risk. If you suspect that gases are present, ask building management to have the pit atmosphere tested to confirm that it is safe to enter.
• Make sure the pit is clean and well lit at all times.
• Never leave the bottom landing door fully open or unattended unless a locked safety cage or barrier is in place around the entrance.
• Plan the job and complete a risk assessment before you go in.
• Tell your colleague, supervisor, or building representative where you will be working, and agree on how you will communicate.
• Put “Out of Service” signs at the landing, and barricade the entrance so no one can use the lift or enter the shaft.
• Check the pit for water, oil, and debris. Do not enter a flooded pit until the water has been cleared and the power isolated.
• Check that the pit lighting works. Carry a torch or headlamp as a backup.
• Check the pit ladder: confirm that it is secure, undamaged, and clear of oil or obstructions.
• Remove loose clothing, jewelry, and anything that could snag on moving parts, and tie back long hair.
• Wear the required PPE, including a hard hat, safety shoes with good grip, and eye protection where needed.
• Make sure the car is at a safe position, such as the upper floor, before you enter, and check that the lift will not move.
• Remove or secure tools and materials on the landing and car so they cannot fall onto you.

Entering and Leaving the Pit

• Use the access ladder, and never jump down into the pit.
• Face the ladder and keep three points of contact when climbing.
• Make sure your shoes are free of oil and grease before you climb.
• Pass tools and equipment down with a rope or hand them to a colleague. Do not carry them while climbing.
• Activate and test the pit stop switch before you start work, and switch it off only after you have left the pit.
• Make sure nothing is left in the pit when you leave: tools, rags, or materials.
• Check that the pit stop switch has been returned to its normal position before the lift is put back into service.

While You Are in the Pit

• Switch the lift off using the pit stop switch, and verify that it works.
• Stay aware of moving components, including the car, the counterweight, the ropes and compensating chain, the governor and compensator sheaves, and any lifts in adjacent shafts.
• Do not work directly above or below another person.
• Do not wear gloves when you work near moving machinery.
• Keep the pit floor free of oil and loose equipment to prevent slips and trips.
• Stay out of the path of the car and counterweight, and know where you can stand safely.
• Keep your hands, feet, and tools clear of buffers, sheaves, and moving ropes.
• Use mechanical props or blocks when you must work under the car, as your procedure requires. Do not rely on the brake alone.
• Never stand on the buffers or use them as a step.
• Wipe up any spilled oil or grease straight away, and dispose of oily rags in a covered metal container.
• Keep cables, hoses, and extension leads off the floor and away from water.
• Use only approved lighting and tools with proper insulation. Do not use damaged cords.
• Do not store materials in the pit. Remove tools and equipment when the job is finished.
• Keep communication open with a colleague at the landing, and stop work if you feel unwell, dizzy, or short of breath.
• Do not smoke, and keep sparks and flames away from the pit.

If the Lift Must Move While You Are in the Pit

• Do not stay in the pit while the lift is running on automatic.
• The lift may be run at contract (normal) speed only if:
  • a second technician has control of the lift, and
  • The person in the pit stands in the marked person clearance zone while the lift moves. Where no zone is marked, the person must decide on a safe standing place before the lift moves and stay there until it stops.
• Agree on clear signals or calls with your colleague before the lift moves, and confirm that both of you are ready.
• Move the lift only after the person in the pit says they are in position.
• If you are unsure of a safe standing place, leave the pit and complete the task a different way.

Electrical Isolation

• Never assume that the pit stop switch or emergency stop isolates the circuit you are working on. These switches are designed to stop the lift, not to isolate every circuit.
• If you need to isolate the circuit, switch off the main breaker in the machine room. Test it before you touch anything.
• Apply lockout and tagout to the main isolator when your procedure requires it, so no one can switch the power back on while you are in the pit.
• Test your meter on a known source before and after you check for voltage.
• Treat every circuit as live until you have proven that it is dead.
• Keep your hands, tools, and the work area dry.
• Do not work on live circuits in the pit unless your procedure allows it and you are qualified.
• Account for every jumper used and remove them before returning the lift to service.

Hydraulic Lifts 

• Block the car or plunger mechanically before you work underneath it.
• Release stored pressure safely, following the manufacturer’s procedure.
• Check for oil leaks and clean up spills before work.
• Do not stand under the car unless it is properly supported.

Flooding, Emergencies, and Rescue

• If you see water in the pit, do not enter. Report it to building management and isolate the power.
• Know the evacuation route and the location of the nearest first-aid kit.
• Carry a charged phone or radio, and agree on check-in times if you work alone. Avoid lone pit work where your procedures require a second person.
• If you are injured or trapped in the pit, use your phone or radio to call for help and stay calm.
• Never attempt a rescue yourself unless you are trained and the hazards, such as moving equipment, have been controlled.
• Report every injury, near miss, and unsafe condition to your supervisor.

Pit Design and Equipment 

Well-designed pits make the work safer. Owners and contractors should check that the pit has:

• A pit stop switch within reach of the access door and ladder.
• Adequate permanent lighting and a switch near the access.
• A secure, fixed access ladder, where the pit depth requires one.
• A dry, clean floor with drainage, where required.
• Space for a person to shelter, often called a refuge space, when the car is at its lowest position. Dimensions are set by the applicable code.
• Warning signs at the landing and in the pit.
• A pit that is free of water, rubbish, and stored materials.

Before Returning the Lift to Service 

• Make sure you and your tools are out of the pit and the ladder is clear.
• Reset the pit stop switch and any blocks or props.
• Remove jumpers, locks, and tags, and test the safety circuit.
• Run the lift and check that it stops and levels correctly.
• Remove “Out of Service” signs and barricades.
• Record the work done and report any defects or concerns to building management.