psychicwarrior:
Hello gkenyon
What 'assumption' are you referring to please?
And what of it is very dangerous ?
In the context of not having RCD (ignore upcoming possible AFDD) on a circuit where 'minor works' take place e.g being an additional socket, on an installation circuit that complies in all other respects to current regs and entirely to previous (discon times OK, bonding OK etc) ....my contention is that it it ought to be possible to have some mechanism to sign such works off under bs7671. Its unrealistic to suggest a new consumer unit/db (or perhaps rcbo not poss) for some minor works and its not unsafe in all honesty is it (accepting it could be *more* safe with the additional protection).
It feels that I stand in a minority on this one and there is unlikely to be provision, so I will have to stand down (reluctantly :-) )
Perhaps there is no room for allowing for 'safe' pragmatism in bs7671 certification of work.
The following statement in essence:
If working on an installation built to previous edition Regs and carrying out 'minor works', then it should still be possible to sign off such work as compliant with BS7671 if in the judgement of the engineer it is not less safe than when it was built.
The reason being as I said that risk assessments have to be reviewed when things change - including standards.
So, an installation that was acceptable in a workplace may no longer be acceptable now.
The correct course of action is to raise with the duty holder when designing the "minor works" and in effect let them decide on risk vs cost. In the case of no RCD, the duty holder may be OK with insisting on the use of PRCDs for portable equipment, rather than a replacement CU - which is probably acceptable provided there's a procedure in place for checking people actually do use the PRCDs, and the PRCDs are checked regularly (user check and if appropriate regular test).
Alan Capon:
Another thought, I f you look at the BSI website, you will find that previous versions of BS7671, for example BS7671:2008 + A3, are marked as “withdrawn”:
“Status : Superseded, Withdrawn Published : January 2015 Replaced By : BS 7671:2018+A1:2020”
I am not sure how far you would get legally, installing or inspecting based on a withdrawn standard.
Regards,
Alan.
Given that some legislation refers directly and specifically to versions of BS 7671 that are now withdrawn, I might have though that you might actually be legally safer working to an older standard...
- Andy.
Let's not forget that there is a section in both EICs and MEIWCs for departures +/- a risk assessment. To my mind, that allows for the extended circuit or replacement circuit, on a non-compliant CU.
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