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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 211 - 221 (11page)
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초록· 키워드
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One fundamental element of probabilistic safety assessment (PSA) is the initiating event (IE) analysis. Since IE frequencies can change over time, time-trend analysis is required to obtain optimized IE frequencies. Accordingly, such time-trend analyses have been employed to estimate industry-average IE frequencies for use in the PSAs of U.S. nuclear power plants (NPPs); existing PSAs of Korean NPPs, however, neglect such analysis in the estimation of IE frequencies. This article therefore provides the method for and results of estimating Korean industry-average IE frequencies using time-trend analysis. It also examines the effects of the IE frequencies obtained from this study on risk insights by applying them to recently updated internal events Level 1 PSA models (at-power and shutdown) for an OPR-1000 plant. As a result, at-power core damage frequency decreased while shutdown core damage frequency increased, with the related contributions from each IE category changing accordingly. These results imply that the incorporation of time-trend analysis leads to different IE frequencies and resulting risk insights. The IE frequency distributions presented in this study can be used in future PSA updates for Korean NPPs, and should be further updated themselves by adding more recent data.
목차
등록된 정보가 없습니다.
참고문헌 (16)
참고문헌 신청
ASME / 2013 / Addenda to ASME/ANS RA-S-2008, Standard for Level 1/Large Early Release Frequency Probabilistic Risk Assessment for Nuclear Power Plant Applications / The American Society of Mechanical Engineers & American Nuclear Society
N. Johnson / 2017 / Initiating Event Rates at U.S. Nuclear Power Plants:1988-2016 / Idaho National Laboratory
U.S. Nuclear Regulatory Commission / 2017 / Industry-average Performance for Components and Initiating Events at U.S. Commercial Nuclear Power Plants / NUREG/CR-6928
U.S. Nuclear Regulatory Commission / 1999 / Rates of Initiating Events at U.S. Nuclear Power Plants: 1987-1995 / NUREG/CR-5750
U.S. Nuclear Regulatory Commission / 2012 / Industry-average Performance for Components and Initiating Events at U.S. Commercial Nuclear Power Plants / NUREG/CR-6928,
N. Johnson / 2017 / Initiating Event Rates at U.S. Nuclear Power Plants:1988-2016 / Idaho National Laboratory
U.S. Nuclear Regulatory Commission / 2017 / Industry-average Performance for Components and Initiating Events at U.S. Commercial Nuclear Power Plants / NUREG/CR-6928
U.S. Nuclear Regulatory Commission / 1999 / Rates of Initiating Events at U.S. Nuclear Power Plants: 1987-1995 / NUREG/CR-5750
U.S. Nuclear Regulatory Commission / 2012 / Industry-average Performance for Components and Initiating Events at U.S. Commercial Nuclear Power Plants / NUREG/CR-6928,
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