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Cables and reaction to fire

lyledunn
Why do you suppose that the MHCLG did not feel it necessary to mandate levels of performance for cables with respect to their reaction to fire as was their prerogative under CPR?

Clearly the current non-prescriptive approach is either working or there is no significant evidence that cables and wiring systems have unduly contributed to the propagation of a fire or resulted in emissions that made a situation untenable when it would not have otherwise been. 

Further, what does it actually mean in the note in 422.2.1 that cables need to satisfy the requirements of the CPR in terms of their reaction to fire? I can find nothing specific in the CPR other than the need for CE marking and the requirements placed on the manufacturers for technical information.
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    wallywombat:

    A few years ago I was in the fairly crowded departure lounge of a small Irish airport (think 5 gates of which about 2 in active use), when the fire alarm sounded. Absolutely no one reacted or evacuated. I made sure I was near a fire escape door that led directly outside, but didn't actually evacuate. The thing that really surprised me is that none of the staff seemed to know what to do. I had assumed they would either be encouraging evacuation or assuring us it was a false alarm, but they just quietly ignored it too.




    I had a vacation job with Marks and Spencer. They took alarms seriously. The instructions were to shepherd customers out of the store in the event of a fire alarm. Doubtless, there was some concern that otherwise pilfering might occur. In the event of a bomb alert (bear in mind late 1970s and conflict in Palestine/Israel) just get out!

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    wallywombat:

    A few years ago I was in the fairly crowded departure lounge of a small Irish airport (think 5 gates of which about 2 in active use), when the fire alarm sounded. Absolutely no one reacted or evacuated. I made sure I was near a fire escape door that led directly outside, but didn't actually evacuate. The thing that really surprised me is that none of the staff seemed to know what to do. I had assumed they would either be encouraging evacuation or assuring us it was a false alarm, but they just quietly ignored it too.




    I had a vacation job with Marks and Spencer. They took alarms seriously. The instructions were to shepherd customers out of the store in the event of a fire alarm. Doubtless, there was some concern that otherwise pilfering might occur. In the event of a bomb alert (bear in mind late 1970s and conflict in Palestine/Israel) just get out!

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