I accept that approach but the HSE’s view of what should and should not be considered in a duty holder’s CBA for health and safety ALARP determinations I personally cannot accept fully and the example shown fills me with horror. Check out http://www.hse.gov.uk/risk/theory/alarpcheck.htm
It only gets scarey in my opinion when certain persons confuse fire risk with the risk of a fire occuring.
In my view we should be looking at the risk of a fire causing harm or damage when it occurs, not if it occurs.
A fire is a reasonably forseeable event that may happen, however unklikely you can prove that to be by clever sums.
It is old ground again but some methodologies will allow you to reduce protective measures if fire is less likely to occur....that cannot be correct.
If injury or damage is less likely when a fire occurs then yes you can reduce the protective measures.
A fire may only occur once in 400 years in your particular class/use of building.....but it may happen tomorrow...that is reasonably foreseeable and reasonable measure must be taken to reduce the risk of injury or harm.
I know some of you will throw up the old arguements like churches, stone masons and wet fish shops...........yes you can usually take less precautions in such buildings because the fires that occur will be slow developing, recognised in early stages etc. etc.,,,,,,,,,,,,,,,,,,,,,,,but it is not the likelihood of fire that is important......that remains the same........people + electricity......you may get a fire so you must take reasonable precautions.