Response Amplification of MCC Cabinets Induced by High Frequency Earthquakes

It was concerned for the public with the safety of nuclear power plants due to the Gyeongju earthquake which occurred in September 2016 in Korea. The observed Gyeongju earthquake showed relatively high frequency components. In this study, it is investigated the amplification of earthquake response of an electrical cabinet by high frequency earthquakes. In this study, seismic response analyses were performed to investigate the response amplification of cabinet due to high frequency earthquakes. The uniform hazard spectrum as seismic input, relatively has high frequency components than the Regulatory Guide 1.60 spectra, confirmed that the seismic response of the electrical cabinet becomes larger in high frequency range. It is necessary to evaluate the characteristics of earthquakes to confirm seismic performance of electrical cabinets.