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http://dx.doi.org/10.7734/COSEIK.2018.31.1.31

A Study on Seismic Probabilistic Safety Assessment for a Research Reactor  

Oh, Jinho (Research Reactor System Engineering Team, Korea Atomic Energy Research Institute)
Kwag, Shinyoung (Research Reactor System Engineering Team, Korea Atomic Energy Research Institute)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.31, no.1, 2018 , pp. 31-38 More about this Journal
Abstract
Earthquake disasters that exceed the design criteria can pose significant threats to nuclear facilities. Seismic probabilistic safety assessment(PSA) is a probabilistic way to quantify such risks. Accordingly, seismic PSA has been applied to domestic and overseas nuclear power plants, and the safety of nuclear power plants was evaluated and prepared against earthquake hazards. However, there were few examples where seismic PSA was applied in case of a research reactor with a relatively small size compared to nuclear power plants. Therefore, in this study, seismic PSA technique was applied to actually completed research reactor to analyze its safety. Also, based on these results, the optimization study on the seismic capacity of the system constituting the research reactor was carried out. As a result, the possibility of damage to the core caused by the earthquake hazard was quantified in the research reactor and its safety was confirmed. The optimization study showed that the optimal seismic capacity distribution was obtained to ensure maximum safety at a low cost compared with the current design. These results, in the future, can expect to be used as a quantitative indicator to effectively improve the safety of the research reactor with respect to earthquakes.
Keywords
seismic probabilistic safety assessment; research reactor; optimal seismic capacity distribution;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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