I currently tasked with converting a steel Portacabin-type box into a lab and process building for static-sensitive equipment and materials.
If there are any ESD gurus on here, I’d appreciate any advice please.
I’ve ripped out all the vinyl, floored it with aluminium treadplate, clad the walls in painted aluminium sheets, and left the ceiling in the original painted steel.
Worktops are in Trespa anti-static material, there’s a metal fume cupboard, and metal cupboards and shelving. Everything is bonded together, and earthed TT. Earth impedance is good.
I’m also intending to run a bonded copper strip all round the worktops, with little sockets for plugging in flying earth leads for loose equipment, wrist straps and so on. Conductive shoes will be worn, and no plastics or other insulators allowed in the building.
But this is all new to me: have I missed anything? The most dangerous errors are those you don’t know you’ve made!
And two questions please:
- Is it OK to use 10mm John Guest plastic plumbing pipe (Polybutylene), tucked away under the worktops? I need to run ring mains of mains water, Type 2 pure water, vacuum, and gas. There are no great flow velocities.
I believe copper is often used, but I’m neurotic about having copper anywhere near where there might be picric acid. Would a little bit of plastic plumbing, screwed to a metal wall, really be a problem? (I suspect less of a problem that a copper picrate explosion in 20 years time!) And it’s so much nicer to install.
- There will be a ring of 100 x 50 galvanised conduit around the room, carrying power and other electrical services. If this were replaced with PVC might it be OK? It’s visually much better and has separate compartments to keep power and data separate. Again screwed directly to a metal wall.
Apologies for the long post. I’m in a hurry and didn’t have the time to write a shorter one :- )
Best regards and stay safe out there, Mark