DOI: 10.1007/s11069-020-04148-9
论文题名: Multi-objective-based seismic fragility relocation for a Korean nuclear power plant
作者: Kwag S. ; Hahm D.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 103, 期: 3 起始页码: 3633
结束页码: 3659
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168576
Appears in Collections: 气候变化与战略
There are no files associated with this item.
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
Recommended Citation:
Kwag S.,Hahm D.. Multi-objective-based seismic fragility relocation for a Korean nuclear power plant[J]. Natural Hazards,2020-01-01,103(3)