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Scope: This standard sets forth the requirements for Low Power and Shutdown (LPSD) probabilistic risk assessments (PRAs) and for LPSD Qualitative Risk Assessments, both of which are used to support risk-informed decisions for commercial light water reactor nuclear power plants. This standard also prescribes a method for applying these requirements for specific applications.
Scope: This standard provides criteria and acceptable methods for the evaluation of containment performance and radiological releases to the environment. The radiological releases considered result from postulated accidents that cause fuel damage and are used in risk-informed applications requiring Level 2 probabilistic risk assessment (PRA). The standard addresses sequences initiated by internal or external events during full power operation.
Scope: This standard provides requirements for application of risk-informed decisions related to the consequences of accidents involving release of radioactive materials to the environment. The consequences to be addressed include health effects (early and late) and longer term environmental impacts. The required capabilities allow determination of the efficacy of mitigation strategies on reducing consequences.
ASME/ANS RA-S, "Standard for Level 1/Large Early Release Frequency Probabilistic Risk Assessment for Nuclear Power Plant Applications"
Last updated October 17, 2012, 8:25am CDT.