Phil - we've had this chat before and I'm never gonna get through to you. But "our existing guidance" is based on a presumption about the typical risk in proprties of a certain type.
Yes Brian I know this is old ground and I think we will have to agree to differ on this one.
It does concern me when I come across consultants who try to convince me by using statistics that because a fire is unlikely they can treat it as an insignificant risk and do nothing about it...you will never convince me that that is correct and I will never as an enforcer accept that arguement.
Consider two identical buildings with identical occupants but statistically you can prove that a fire in building A occurs once in 100 years and a fire in building B occurs once in 200 years. Can I reduce the protective measures that have been provided for life safety only in building B because the frequency of the fire is halved???
In my opinion no, because that once in 200 years may be tomorrow.
I know I will never convert you Wee Brian but I will keep trying.