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Existing Equipment, Location Issues not in line with BS 7671 section 729

Simon Port

A client has a voltage optimization unit (tapping transformer) installed in a small room with a single entrance. The room is adjacent to the main low-voltage distribution board.

The current installation doesn't meet the required 700mm clearance in front of the unit, preventing the door from opening fully. This poses a safety concern as there's no clearance when the door is open.

We've been asked to replace the unit, but the location seems non-compliant.

Is there a way to proceed with the replacement without relocating the unit? Could the client sign a waiver acknowledging the non-compliance and potentially restrict access to the room when the equipment is live?

Please advise on the best course of action to ensure safety and compliance

  • 0

    An easy practical solution is to make the door open outwards, which is what boiler rooms have to do now.

  • 0

    The work is covered by CDM Regulations (regardless of whether or not it is classed as 'maintenance').

    The Client has to appoint a competent contractor to do the work ... the Contractor cannot start work unless they are satisfied the Client knows their duties under the Regulations, and has appointed, where necessary, competent persons to fulfil their duties under the Regulations.

    What does existing Safety File say about the transformer location and associated risks? If there is no existing safety file, I would suggest this needs to be looked at with the Client (who has a responsibility for this). Has the Client looked for an alternative location and ruled that out?

    These are decisions that a Contractor cannot take alone.

  • 0

    Just thinking out loud, what sort of size and construction is the VO unit? Is it not adequately enclosed so that ordinary persons might be at risk if they could access it? I tend to think of section 729 as covering big industrial stuff - e.g. where massive circuit breakers have to be racked out for routine maintenance - so I wonder if it's applicable in this case.

       - Andy.

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