Risk monitor riskangel for risk-informed applications in nuclear power plants

Wang, Fang; Wang, Jiaqun; Wang, Jin; Li, Yazhou; Hu, Liqin; Wu, Yican

doi:10.1016/j.anucene.2015.12.019

Cited by 14 publications

(3 citation statements)

References 8 publications

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“…The feedwater supply system in CANDU NPP is selected as the reference case in this paper. The average and instantaneous PSA models have been developed and validated with the support of RiskA and RiskAngel software . Part of the component importance measures is listed in Tables and .…”

Section: Application Casementioning

confidence: 99%

“…The average and instantaneous PSA models have been developed and validated with the support of RiskA and RiskAngel software. [28][29][30][31] Part of the component importance measures is listed in Tables 3 and 4. In average model, the 3 components Pump-4, Pump-2, and Valve-4 have met the safety significant criteria according to the traditional method.…”

Section: Application Casementioning

confidence: 99%

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A new importance assessment method for risk-informed SSC categorization

Wang

et al. 2018

Int J Energy Res

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Summary This paper proposed a new importance assessment method and new importance measure to perform risk‐informed system, structure, and components (SSCs) categorization task, regarding the dynamic of SSCs' importance measures caused by varied configurations in nuclear power plants (NPPs). The new method consists of 3 importance measures, Fussell Vesely, risk achievement worth, and return to service worth, and an integrated time ratio factor is introduced to get an SSCs ranking, which could handle more realistic configurations in NPP operation. The proposed method has been used in CANDU feedwater system SSCs categorization, supported by RiskA and RiskAngel software, and a different SSCs categorization result compared with NEI method was given. The difference of categorization result derived from 2 methods was discussed in this paper, and the effectiveness has been demonstrated by the NPP's real operation statistics.

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Section: Application Casementioning

confidence: 99%

Section: Application Casementioning

confidence: 99%

A new importance assessment method for risk-informed SSC categorization

Wang

et al. 2018

Int J Energy Res

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“…Similarly, the method is also applicable to the spent fuel reprocessing device in this study. Currently, the main types of events leading to nuclear security radiation incidents in spent fuel reprocessing plants can be categorized as employee theft; external terrorist attacks; theft; cyber information terrorist events in nuclear facilities; potential threats from employee injuries and equipment failures in spent fuel reprocessing plants; and natural disasters and fires [14][15][16][17][18][19][20][21]. However, obtaining the occurrence probabilities of these basic events within the context of spent fuel reprocessing plants is challenging.…”

Section: Introductionmentioning

confidence: 99%

Research on Radiation Monitoring Strategy for Spent Fuel Reprocessing Plant Based on Coordination of Nuclear Security Risk and Facility Importance Evaluation

Sun,

Li,

Wei

et al. 2024

Sustainability

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This paper examines a method and scheme for optimizing the allocation of nuclear radiation monitoring resources, based on the analysis of the risk of nuclear security events and the importance of facilities in a spent fuel reprocessing plant. By constructing a nuclear security radiation accident tree for a plant, the importance of different security events was calculated using fuzzy mathematics and expert scoring methods. The importance of each facility was determined by establishing a fuzzy comprehensive decision model, and a resource allocation scheme for nuclear radiation monitoring was proposed based on the importance level of facilities. The research findings demonstrated that the extraction process plant in the main process area, and the centralized control room in the front area of the plant, were of highest importance. Accordingly, three levels of nuclear radiation monitoring programs were established based on the importance of each facility. This study offers theoretical and technical support for the safety management and operation of a spent fuel reprocessing plant. Additionally, the analysis results can serve as a reference for allocating nuclear radiation monitoring resources in various facilities in a reasonable manner.

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