气候变化领域集成服务门户(CCPortal): Multi-objective-based seismic fragility relocation for a Korean nuclear power plant

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DOI	10.1007/s11069-020-04148-9
	Multi-objective-based seismic fragility relocation for a Korean nuclear power plant
	Kwag S.; Hahm D.
发表日期	2020
ISSN	0921030X
起始页码	3633
结束页码	3659
卷号	103 期号:3
英文摘要	An optimal risk-informed seismic fragility relocation is proposed for structures, systems, and components (SSCs) of nuclear power plants (NPPs) that mitigates the core damage risk of the NPP and raises the cost performance. The proposed approach employs a seismic probabilistic safety assessment technique to effectively distribute seismic fragilities of SSCs from the perspective of overall plant risk. The main objectives of the optimal seismic fragility relocation are to mitigate the core damage risk and minimize the total cost for the SSCs of the NPP. To deal with such conflicting purposes, a genetic algorithm-based multi-objective optimization scheme is adopted. This approach systematically obtains a set of Pareto optimal solutions that are neither inferior nor superior to each other. The process for choosing the most appropriate seismic fragility distribution plan from the optimal front of Pareto solutions is also discussed with an emphasis on the study of the uncertainty quantification on such optimal Pareto solutions. As an example for such an optimal fragility relocation study, this study considers a typical type of Korean NPP. The numerical results confirm that the proposed approach provides diverse optimal seismic fragility relocation plans which can effectively reduce the core damage risk as well as the cost compared to the current fragility distribution of this example NPP. Finally, the best optimal alternatives for the fragility relocation are selected based on the Pareto optimal solution’s robustness of performances against their perturbations. © 2020, Springer Nature B.V.
关键词	Multi-objective optimization Nuclear power plants Optimal fragility relocation Seismic fragility Seismic probabilistic risk assessment
英文关键词	earthquake damage; earthquake magnitude; nuclear power plant; numerical method; probability; seismic data; seismic response; seismic source; spatial resolution; Korea
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205777
作者单位	Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon, 34158, South Korea; Korea Atomic Energy Research Institute, 111 Daedeok-daero, Yuseong-gu, Daejeon, 34057, South Korea
推荐引用方式 GB/T 7714	Kwag S.,Hahm D.. Multi-objective-based seismic fragility relocation for a Korean nuclear power plant[J],2020,103(3).
APA	Kwag S.,&Hahm D..(2020).Multi-objective-based seismic fragility relocation for a Korean nuclear power plant.Natural Hazards,103(3).
MLA	Kwag S.,et al."Multi-objective-based seismic fragility relocation for a Korean nuclear power plant".Natural Hazards 103.3(2020).