Methods of risk analysis (METRI): Risk-informed graded quality assurance

Jan-Erik Holmberg

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional


The grading of quality assurance (QA) controls at nuclear power plant aims at assuring an acceptable safety level but also at allocating QA resources cost-effectively. Historically, QA requirements stem from the safety classification of the systems, structures and components based on deterministic safety criteria. Risk-informed approaches applying the probabilistic safety assessment (PSA) are considered as one solution to rationalise and potentially relax the QA system. In this paper, risk-based conditions are formulated for the assignment of QA grades. The risk-based formulation is a reference model to explore possibilities, requirements and obstacles of this application of PSA.
Original languageEnglish
Title of host publicationFINNUS: The Finnish Research Programme on Nuclear Power Plant Safety 1999-2002
Subtitle of host publicationFinal Report
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
ISBN (Electronic)951-38-6086-8
ISBN (Print)951-38-6085-X
Publication statusPublished - 2002
MoE publication typeNot Eligible

Publication series

SeriesVTT Tiedotteita - Research Notes


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