The electric transition has quietly changed what rolls onto the workshop ramp. A delivery van that looks like every other diesel on the fleet now carries a battery pack running at several hundred volts - enough to kill, and to do it without the noise, smell or visible danger that warns people off other workshop hazards. HSE’s guidance on electric and hybrid vehicles in motor vehicle repair exists because this is a genuinely new risk profile arriving in buildings designed for a different one.
Conventional vehicle electrics - 12 or 24 volts - can start fires and hurt equipment, but they do not push lethal current through a person. High-voltage EV systems can, and the hazards stack in ways familiar workshop instincts do not cover. Stored energy: the battery stays live when the ignition is off, and components hold charge after isolation. Invisibility: an orange cable looks like any other cable to someone who was never taught the colour code, and a damaged pack gives no warning it is about to arc. New failure modes: crash-damaged and flood-damaged vehicles can present delayed hazards, including thermal runaway in lithium batteries - fires that ignite hours after the vehicle seemed stable and that burn with a ferocity and reignition behaviour unlike a fuel fire.
HSE’s guidance frames the response the same way it frames any hazardous energy: the risks must be assessed, the people doing the work must be competent for it, and the work itself must be planned around the hazard - which in practice means a hard line between high-voltage work and everything else.
The single most important control is also the simplest to state: people without specific EV training should not work on or near high-voltage systems. In practice that means a tiered workshop. Staff with no EV training can do work that never approaches the high-voltage system - tyres, brakes, bodywork on a vehicle whose HV system is intact and untouched. Staff trained to make vehicles safe can isolate and shut down the high-voltage system, making the vehicle safe for others to work on. And a smaller group - the properly qualified - works on the high-voltage system itself: live testing, component replacement, battery work. Each tier is a training decision with a certificate and a record, not a job-title assumption, and the workshop’s job allocation has to enforce it: the job card for an EV should say which tier it requires before the vehicle goes on the ramp.
Competent people still need a system. HSE’s approach translates into a workable routine. Identify: the vehicle is recognised as electric or hybrid at booking-in, not discovered on the ramp - and crash-damaged or flood-damaged EVs trigger heightened procedures before anyone touches them. Isolate: the high-voltage system is shut down following the manufacturer’s procedure, and absence of voltage is proven before work - the lock-out, tag-out discipline borrowed from industrial electrical work, with keys and tags that keep the vehicle dead while someone is inside it. Control the area: signage, barriers where live work happens, insulated tools and gloves for the qualified tier, and no lone working on live HV systems. And emergency planning: everyone in the building should know what a battery thermal event looks like - the hiss, the vapour, the heat - and what the workshop’s response is, because the wrong response to a lithium fire makes it worse.
EV readiness costs money, and the honest budget includes insulated tool sets and gloves with their own testing regime, category-rated test equipment, lifting and handling arrangements for battery packs that weigh hundreds of kilos, PPE for the qualified tier, and - the line item people forget - somewhere to quarantine a suspect vehicle away from the building and other stock. The premises question is real for older workshops: charging vehicles in the building adds electrical load and a new fire-load conversation with the insurer.
The strategic frame matters more than any single purchase. The electric share of the van and truck fleet is growing on a policy schedule, and every fleet’s maintenance provider - in-house or contracted - will meet these vehicles with rising frequency. The workshops that treat HSE’s guidance as a specification now - trained tiers, isolation discipline, proper kit, planned emergencies - will service that fleet safely. The ones that treat an EV as a quieter diesel are betting their people on a hazard they cannot see, and the first lesson in high-voltage work is that nobody should be learning it by experience.