Nuclear power plants. Instrumentation and control important to safety. Use of probabilistic safety assessment for the classification of functions Ingestion-build-48068 such as maintainers and retainers

such as maintainers and retainers

including methods of statistical assessment

Updated normative reference list

These devices can be affected by their operating conditions and hence need to be regularly evaluated

Nuclear power plants. Instrumentation and control important to safety. Use of probabilistic safety assessment for the classification of functions Ingestion-build-48068 such as maintainers and retainers1 Scope This Technical Report provides a survey of some of the methods by which probabilistic risk assessment results can be used to establish "risk based" classification criteria, so as to allow FSEs to be placed within the four categories established within IEC 61226. The application of risk based classification (categorisation) techniques, in conjunction with the role based deterministic approach to classification given in IEC 61226 Edition 3, will