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http://dx.doi.org/10.5000/EESK.2020.24.3.123

Seismic Response Amplification Factors of Nuclear Power Plants for Seismic Performance Evaluation of Structures and Equipment due to High-frequency Earthquakes  

Eem, Seung-Hyun (Major in Plant System Engineering, School of Convergence & Fusion System Engineering, Kyungpook National University)
Choi, In-Kil (Mechanical and Structural Safety Research Division, Korea Atomic Energy Research Institute)
Jeon, Bub-Gyu (Seismic Research and Test Center, Pusan National University)
Kwag, Shinyoung (Department of Civil & Environmental Engineering, Hanbat National University)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.24, no.3, 2020 , pp. 123-128 More about this Journal
Abstract
Analysis of the 2016 Gyeongju earthquake and the 2017 Pohang earthquake showed the characteristics of a typical high-frequency earthquake with many high-frequency components, short time strong motion duration, and large peak ground acceleration relative to the magnitude of the earthquake. Domestic nuclear power plants were designed and evaluated based on NRC's Regulatory Guide 1.60 design response spectrum, which had a great deal of energy in the low-frequency range. Therefore, nuclear power plants should carry out seismic verification and seismic performance evaluation of systems, structures, and components by reflecting the domestic characteristics of earthquakes. In this study, high-frequency amplification factors that can be used for seismic verification and seismic performance evaluation of nuclear power plant systems, structures, and equipment were analyzed. In order to analyze the high-frequency amplification factor, five sets of seismic time history were generated, which were matched with the uniform hazard response spectrum to reflect the characteristics of domestic earthquake motion. The nuclear power plant was subjected to seismic analysis for the construction of the Korean standard nuclear power plant, OPR1000, which is a reactor building, an auxiliary building assembly, a component cooling water heat exchanger building, and an essential service water building. Based on the results of the seismic analysis, a high-frequency amplification factor was derived upon the calculation of the floor response spectrum of the important locations of nuclear power plants. The high-frequency amplification factor can be effectively used for the seismic verification and seismic performance evaluation of electric equipment which are sensitive to high-frequency earthquakes.
Keywords
High-frequency earthquake; Seismic performance evaluation; Nuclear power plant; Floor response spectrum; Amplification factor; High-frequency amplification factor;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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