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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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  • Former Community Member
    0 Former Community Member
    BS 5839 covers the issue of unwanted fire signals in some detail - along with appropriate methods of filtering (eg, use detectors with variable sensitivity by time - high sensitivity ant night during sleeping risk and low sensitivity by day when people are awake, alert and aware of their surroundings). Staff intervention can be a useful tool, as can "quiet alarms" for staff only - eg, no point ringing the bells in a high dependency medical unit, as the persons present probably can't move let alone follow an evacuation plan - the staff will do that for them if, and only if required.


    For me, the advice is quite simple:


    For Fire: Get out and Stay Out


    For CTM - Run, Hide, Tell


    Regards


    OMS
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  • Former Community Member
    0 Former Community Member
    BS 5839 covers the issue of unwanted fire signals in some detail - along with appropriate methods of filtering (eg, use detectors with variable sensitivity by time - high sensitivity ant night during sleeping risk and low sensitivity by day when people are awake, alert and aware of their surroundings). Staff intervention can be a useful tool, as can "quiet alarms" for staff only - eg, no point ringing the bells in a high dependency medical unit, as the persons present probably can't move let alone follow an evacuation plan - the staff will do that for them if, and only if required.


    For me, the advice is quite simple:


    For Fire: Get out and Stay Out


    For CTM - Run, Hide, Tell


    Regards


    OMS
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