11. Limitations of Risk Importance Measures Available to Purchase

As discussed before, risk importance measures are used in many applications to address issues relating to regulation and operation of NPPs. As being discussed in this monograph, these measures provide useful inputs and make the PRA models of NPPs present results that are directly applicable for the issues to be addressed. In these applications, the information obtained from these measures should be viewed in the context of their limitations some of which are discussed here. The last two points (i.e. 6 and 7) provide a discussion on some aspects and limitations of methods specifically considered in previous sections in this monograph.