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|Title:||Determining the Quality of Probabilistic Safety Assessment (PSA) for Applications in Nuclear Power Plants|
|Authors:||KIRCHSTEIGER Christian; KUBANYI Jozef|
|Publisher:||International Atomic Energy Agency (IAEA)|
|Other Identifiers:||OPOCE IAEA-TECDOC-1511|
|Abstract:||Probabilistic safety assessment (PSA) of nuclear power plants (NPPs) complements the traditional deterministic analysis and is widely recognized as a comprehensive, structured approach to identifying accident scenarios and deriving numerical estimates of risks dealing with NPP operation and associated plant vulnerabilities. Increasingly, during the last years, PSA has been broadly applied to support numerous applications and risk-informed decisions on various operational and regulatory matters. The expanded use of PSA in the risk-informed decision making process requires that PSA possess certain features to ensure its technical consistency and quality. This publication is aimed to further promote the use and application of PSA techniques in IAEA Member States. The publication provides a comprehensive list of PSA applications and describes what technical features (termed ‘attributes’) of a PSA should be satisfied to reliably support the PSA applications of interest. A consideration has been also given to the basic set of attributes characterizing a ‘base case PSA’ that is performed with the purpose of assessing the overall plant safety. This publication can support PSA practitioners in appropriate planning of a PSA project taking into account possible uses of the PSA in the future. The publication can be also used by reviewers as an aid in assessing the quality of PSAs and judging the adequacy of a PSA for particular applications. In addition, it is also foreseen to use the publication to support the independent peer reviews conducted by the IAEA in the framework of the International Probabilistic Safety Assessment Review Team (IPSART) safety service.|
|JRC Institute:||Institute for Energy and Transport|
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