Fire stopping for cables

is it permissible to run a cctv cable through and existing fire stopped door surround if repairing afterwards?

We have a long corridor with fire doors and a cable tray from the ceiling. I need to run a couple of cables from A-B and the far shorter route is to utilise the tray, but where it runs through above the fire doors, obviously the route has been stopped after adding cables.

Can I get away with running a couple of BNC sized cables through the stopping and repairing?
Presumably there is a correct material? Not just a wallop of plaster or filler?

I could figure an alternative but it would be a massive PIA

TIA

Tigercubrider said:

Can I get away with running a couple of BNC sized cables through the stopping and repairing?

Click to expand...

Yes. Seal it up with fire rated expanding foam(if you've had to make a large hole) or intumescent sealant.

If you are likely to be back any time in the future to run more cables, use a non setting intumescent putty instead, so it's easy to remove and re-use next time.

Thanks