Development of an Accident Sequence Precursor Methodology and its Application to Significant Accident Precursors

Autor: Seunghyun Jang, Sunghyun Park, Moosung Jae
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Nuclear Engineering and Technology, Vol 49, Iss 2, Pp 313-326 (2017)
Druh dokumentu: article
ISSN: 1738-5733
DOI: 10.1016/j.net.2017.01.014
Popis: The systematic management of plant risk is crucial for enhancing the safety of nuclear power plants and for designing new nuclear power plants. Accident sequence precursor (ASP) analysis may be able to provide risk significance of operational experience by using probabilistic risk assessment to evaluate an operational event quantitatively in terms of its impact on core damage. In this study, an ASP methodology for two operation mode, full power and low power/shutdown operation, has been developed and applied to significant accident precursors that may occur during the operation of nuclear power plants. Two operational events, loss of feedwater and steam generator tube rupture, are identified as ASPs. Therefore, the ASP methodology developed in this study may contribute to identifying plant risk significance as well as to enhancing the safety of nuclear power plants by applying this methodology systematically.
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