Auto closing doors-smoke detector distances

[jokar]

Goodness me Mr P, are you saying that people do not put things in correctly?  I think the FSC would challenege that they have great examples of where they had completed FRA's to an exacting standard.  Though unfortunatley not on their own premises.

Yes, good point.

[Dinnertime Dave]

Didn`t CFOA issue some guidance a few years back saying that an L3 system should be used due to Buoyancy of the smoke in corridors.

By the way i`m not agreeing with CFOA, just informing - so please don`t laugh. 

[Wiz]

I've been on the piste for a while, so joining this late.

Firstly I would pick up on one minor point.

Someone previously said;

....I'm sure you are aware that 7.5M is a number associated with the distance of the detector from any point in a room for life protection......

I believe that this distance is also applicable to property protection.

Secondly, someone previously mentioned old CFOA recommendations. Surely, these don't overide current British Standards? If they have any authority then I also demand that the WROT (Wiz's Rule Of Thumb) recommendations are also taken into consideration in the future!

In respect of the original question, BS7273 (spit!) almost certainly has some bearing on the issue. This BS can vary the automatic detector positions and spacings (including those in adjacent rooms) dependent on system category designation.

Does anyone know the 5839 system category designation and the 7273 (spit!) actuation category designation of the system in question, so that the specific recommendations can be ascertained?

[Graeme]

Dear Wiz

i have been on the Piste since i was 17 so thats no excuse for joining in late