Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Seismic behavior of simplified electrical cabinet model considering cast-in-place anchor in uncracked and cracked concretes

  • Bub-Gyu Jeon (Seismic Research and Test Center, Pusan National University) ;
  • Sung-Wan Kim (Seismic Research and Test Center, Pusan National University) ;
  • Sung-Jin Chang (Seismic Research and Test Center, Pusan National University) ;
  • Dong-Uk Park (Seismic Research and Test Center, Pusan National University) ;
  • Hong-Pyo Lee (Korea Hydro and Nuclear Power Co, Ltd)
  • Received : 2023.04.10
  • Accepted : 2023.08.02
  • Published : 2023.11.25
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Abstract

In the case of nuclear power plants near end of their design life, a reassessment of the performance of safetyrelated equipment may be necessary to determine whether to shut down or extend the operation of the power plant. Therefore, it is necessary to evaluate the level of performance decline due to degradation. Electrical cabinets, including MCC and switchgear, are representative safety-related equipment. Several studies have assessed the degradation and seismic performance of nuclear power plant equipment. Most of those researches are limited to individual components due to the size of safety-related equipment and test equipment. However, only a few studies assessed the degradation performance of electrical cabinets. The equipment of various nuclear power plants is anchored to concrete foundations, and crack in concrete foundations is one of the most representative of degradation that could be visually confirmed. However, it is difficult to find a study for analysis through testing the effect of cracks in concrete foundations on the response of electrical cabinet internal equipment fixed by anchors. In this study, using a simple cabinet model considering cast-in-place anchor in uncracked and cracked concretes, a tri-axial shaking table tests were performed and the seismic behavior were observed.

Keywords

Acknowledgement

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea (No. 20217910100150).

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