Addressing the Issue of PRA Quality
In 1995, the U.S. Nuclear Regulatory Commission (NRC) issued a Policy Statement  on the use of probabilistic risk analysis (PRA), encouraging its use in all regulatory matters. The Policy Statement states that “…the use of PRA technology should be increased to the extent supported by the state of the art in PRA methods and data and in a manner that complements the NRC’s deterministic approachI’ Since that time, many uses have been implemented or undertaken, including modification of NRC’s reactor safety inspection program and initiation of work to modify reactor safety regulations. Consequently, confidence in the information derived from a PRA is an important issue: the accuracy of the technical content must be sufficient to justify the specific results and insights that are used to support the decision under consideration.
KeywordsRegulatory Position Nuclear Regulatory Commission Regulatory Guide Probabilistic Risk Assessment Acceptable Approach
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