Multi-unit Level 1 probabilistic safety assessment: Approaches and their application to a six-unit nuclear power plant site

김동산; 한상훈; 박진희; 임호곤; 김정한

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자료유형: 학술저널

저자정보: 김동산 한상훈 박진희 임호곤 김정한

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제50권 제8호

발행연도: 2018.1

수록면: 1,217 - 1,233 (17page)

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Following a surge of interest in multi-unit risk in the last few years, many recent studies have suggestedmethods for multi-unit probabilistic safety assessment (MUPSA) and addressed several related aspects. Most of the existing studies though focused on two-unit nuclear power plant (NPP) sites or used rathersimplified probabilistic safety assessment (PSA) models to demonstrate the proposed approaches. Whenconsidering an NPP site with three or more units, some approaches are inapplicable or yield very conservativeresults. Since the number of such sites is increasing, there is a strong need to develop andvalidate practical approaches to the related MUPSA. This article provides several detailed approaches thatare applicable to multi-unit Level 1 PSA for sites with up to six or more reactor units. To validate theapproaches, a multi-unit Level 1 PSA model is developed and the site core damage frequency is estimatedfor each of four representative multi-unit initiators, as well as for the case of a simultaneous occurrenceof independent single-unit initiators in multiple units. For this purpose, an NPP site with six identicalOPR-1000 units is considered, with full-scale Level 1 PSA models for a specific OPR-1000 plant used asthe base single-unit models.

참고문헌 (29)

참고문헌 신청

M.A. Stutzke / 2014 / Scoping estimates of multi-unit accident risk / Proceedings of Probabilistic Safety Assessment and Management (PSAM 12)

Pickard Lowe / 1983 / Seabrook Station Probabilistic Safety Assessment e Section 13.3 Risk of Two Unit Station

K.N. Fleming / 2005 / On the issues of integrated riskda PRA practitioners perspective / Proceedings of the ANS International Topical Meeting on Probabilistic Safety Analysis

K.N. Fleming / 2015 / On the risk significance of seismically induced multi-unit accidents / Proceedings of the ANS International Topical Meeting on Probabilistic Safety Assessment and Analysis

S. Samaddar / 2014 / Technical approach for safety assessment of multi-unit NPP sites subject to external events / Proceedings of Probabilistic Safety Assessment and Management (PSAM 12)

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