Two-Post Lift, Spilled Fluid and an Eager Apprentice
Bay 2 of a three-bay independent garage holds a 2016 long-wheelbase panel van, kerb weight around 2.1 t, raised on a two-post lift to 1.7 m. The near-side rear lift arm is sitting under the sill seam rather than the manufacturer's lifting point, and the arm pad is not seated squarely. The lift's near-side ram has a slow hydraulic weep that has left an oil film across roughly 3 m² of the bay floor, and a brake caliper removed an hour earlier has dripped DOT 4 onto the same area. A 17-year-old apprentice, three months into the job, has been told by the technician to slide under with an impact gun and loosen the subframe bolts while the technician walks to the stores for a replacement caliper; the apprentice has done this task twice before, both times under direct supervision. The extinguisher point is blocked by a stack of scrap tyres, and the bay's only wheel chock is in use on another vehicle.
1. Identify the hazards present in bay 2 and state, in order, what must happen before anyone works under the van. Explain how you prioritised them.
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Hazards: an incorrectly supported 2.1 t load; a leaking lift ram that could fail under load; oil and brake fluid creating a slip hazard where parts are being carried; a young, partially trained person about to work alone under a raised vehicle; blocked fire equipment; no chock available; brake fluid as a skin/eye irritant and a surface contaminant.
Priority order and reasoning:
- Stop the job. Tell the apprentice to come out and stay clear. The consequence of a sill seam crushing or an arm slipping is fatal, so this outranks tidiness.
- Make the load safe. Lower the van fully, reposition the arms onto the correct lifting points with the pads square and the arm locks engaged, then raise only to the height needed. Do not work under a vehicle supported on a seam or on a weeping ram.
- Deal with the lift defect before re-use (see next task).
- Clean the spill with absorbent granules and a spill kit, bag the waste as hazardous, then degrease the floor and check it is not slick. Do this before anyone carries a caliper or a gun across the bay.
- Clear the extinguisher point and obtain a chock.
- Only then supervise the apprentice.
The hierarchy of control drives the order: eliminate the need to be under a badly supported vehicle, then engineer the support correctly, then control the spill and access administratively, with PPE last. PPE would not have prevented a lift failure or a slip.
2. How should the lift defect and the floor contamination be managed, recorded and escalated? Explain why a 'just this once, we need the bay' decision is wrong.
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The lift should be taken out of service immediately: switch off and lock off the power isolator, fit a 'Do not use' tag, and inform the workshop controller or site manager. The hydraulic hose should be replaced by a competent person, not patched with tape, and the lift should not return to service until it has been repaired, function-tested under load and, where the statutory thorough examination scheme applies (commonly six-monthly for vehicle lifts), covered by a current examination report. Record the defect, the date, the action taken and the sign-off in the lift maintenance log and on the job card for the van.
The spill should be treated under the COSHH assessment: absorbent on the oil, separate absorbent or rags for the DOT 4, gloves and eye protection, waste into a labelled hazardous-waste container, and never hosed to a drain. Brake fluid strips paint and contaminates drains, so wiping it into a corner is not acceptable. Degrease and re-check the surface, and review why a leaking caliper was left dripping in the first place.
A 'just this once' decision is wrong because a hydraulic hose fails under pressure, not gradually, and the person underneath absorbs the whole consequence. Allowing one exception also teaches the team that the defect log is optional. The bay being busy is a scheduling problem; it is not a reason to accept a fatality risk or a reportable spill.
3. How would you supervise and brief the apprentice for the subframe bolt task once the van is safely supported? Describe what you would delegate and what you would not, and how you would confirm understanding.
Read the worked answer
Competence, not age, sets the boundary, but three months in and two supervised repetitions does not make the apprentice competent to work under a raised vehicle unsupervised with an impact gun. I would check the training record and the task risk assessment first.
I would keep the apprentice on tasks he has been trained and assessed for: fetching and identifying the correct tools, cleaning the spill once shown the spill kit and PPE, checking the arm pads visually, and handing tools. I would not delegate the subframe bolt removal unsupervised, because an impact gun can walk a vehicle on its pads, the bolts are torque-critical, and a mistake is not self-correcting.
The briefing should be short and specific: what the task is, the correct bolt sequence and torque, the hazards (falling load, trapped fingers, oil on the floor), the stop criteria, and the rule that he comes out and fetches me if anything moves, leaks or feels wrong. I would ask him to repeat the task and stop criteria back to me, then stay in the bay for the first bolts and check the torque wrench setting myself at the end. The exchange goes in his training log with the date and what was supervised, so the next person can see what he has actually done.