| Summary: | 碩士 === 國立臺灣大學 === 土木工程學研究所 === 103 === Seismic probabilistic risk assessment (SPRA) has been widely used to compute the frequencies of core damage and release of radiation of nuclear power plant (NNP).In 2011, Huang, Whittaker, and Luco published a new SPRA methodology, different from existing SPRA, including nonlinear response-history analysis of structure to estimate seismic demands for component and the component fragility curves are functions of component response parameters.
In the study presented in this thesis, the methodologies of developing ground-motion-based and response-based component fragility curves with numerical models are presented. A residual heat removal (RHR) piping system which contributes significantly to the seismic risk of a sample NPP has been analyzed experimentally and numerically. Then, the numerical model based on experimental result is used to develop a response-based fragility curve for the system. Comparing to the ground-motion-based component fragility analysis result, the response-based fragility analysis result is more conservative and reliable, so recommendation is using response-based fragility curves in seismic probabilistic risk assessment.
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