ABSTRACT
The decision should take account of the risk estimate, but cannot be determined by it. The limits of the tolerable region are set by comparison (not necessarily equation) with other risks. Moreover, the decision-maker needs to make as explicit as possible the framework and basis for decisions, and if necessary to subject them to public debate. In this respect, the HSE’S papers on the tolerability of risk from nuclear power stations (“TOR”) were a great step forwards (HSE 1988b, 1992a). Rimington notes that the concept of tolerability “depends upon our ability to quantify and compare risks in such a way that people and governments can make informed judgements about them, and to decide in particular whether the available benefits are worth the risk” [my emphasis]. This “provides a basis for legitimizing social and political decisions to accept significant risks from which some people receive greater benefits than others” and “involves a statement of the standards and limits that society undertakes to apply as part of this process”.
