Lighting circuit in an area containing flamable liquids

[freedomrun]

I've been asked to install a lighting cct outside in a locked off area containing flamable liquids (Fuel, petrol, diesel) customer just wants a bulkhead light (100 watt max) & switch, these will installed over 50cm from storage units for fuel, but within the area of a fuel hose. Other than IP requirements for water, what other Regs do i need to apply? Many Thanks for any advice.

 

[Engineer54]

You are now in the Realms of statatory Ex rules, and if you are not aware of those regulations, you shouldn't even be considering undertaking this work.

Save to say you cannot just install a bulkhead fitting in these circumstances....

 

[JUD]

Page 241 of the regs (red one) paragraph 5.

5. For installations in potentially explosive atmospheres.....


​Tells you what regs you need to reference.

 

[freedomrun]

Glad I asked the question - I'm gonna go back to the customer and put it to him that we put a security light and switch - outside - the area of the fuel storage, but would still provide enough illumination (no jokes about matches and fuel tanks please - i have a feeling this is whats being going on already !!) Many Thanks.

 

[IQ Electrical]

Glad I asked the question - I'm gonna go back to the customer and put it to him that we put a security light and switch in outside the area if the fuel, but would still provide enough illumination (no jokes about matches and fuel takes please !!) Many Thanks.

That's a much easier (and cheaper) solution, it can be a minefield of regulations once you mention petroleum storage.

I remember doing the pit lighting in a large garage a few years ago and each luminaire had a compressed air feed to it to maintain a positive internal pressure and prevent the entry of fuel vapours etc.

The fitting would not strike up if the pressure switch wasn't closed.

Cost a fortune!

 

[Knobhead]

The switch and light need to be outside the Ex zones. The construction of the storage compound makes a big difference. I don’t know about prices now but 30 years ago a zone 1 Ex 5’ light fitting was £550. Look for them on Google.

Just bear in mind if the place gets a visit from the HSE they are as keen as mustard on this subject.