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원자력 전기기기 부품의 내진성능 확인을 위한 진동대 실험

Shaking Table Test to Verify the Seismic Performance of Nuclear Electric Components

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키워드

주제분류토목공학

초록

Earthquakes of magnitude 3.0 or greater occur in Korea about 10 times on average yearly, and the number of earthquakes occurring in Korea is increasing. As many earthquakes have recently occurred, interest in the safety of nuclear power plants has increased. Nuclear power plants are equipped with many cabinet-type control facilities to regulate safety facilities, and function maintenance is required during an earthquake. The seismic performance of the cabinet is divided into structural and functional performances. Structural performance can be secured during the design procedure. Functional performance depends on the vibration performance of the component. Therefore, it is necessary to confirm the seismic performance of the components. Generally, seismic performance is confirmed through seismic simulation tests. When checking seismic performance through seismic simulation tests, it is difficult to determine the effect of frequency and maximum acceleration on an element. In this paper, shaking table tests were performed using various frequencies and various maximum accelerations. The seismic performance characteristics of the functions of electrical equipment components were confirmed through tests.

Abstract

Earthquakes of magnitude 3.0 or greater occur in Korea about 10 times on average yearly, and the number of earthquakes occurring in Korea is increasing. As many earthquakes have recently occurred, interest in the safety of nuclear power plants has increased. Nuclear power plants are equipped with many cabinet-type control facilities to regulate safety facilities, and function maintenance is required during an earthquake. The seismic performance of the cabinet is divided into structural and functional performances. Structural performance can be secured during the design procedure. Functional performance depends on the vibration performance of the component. Therefore, it is necessary to confirm the seismic performance of the components. Generally, seismic performance is confirmed through seismic simulation tests. When checking seismic performance through seismic simulation tests, it is difficult to determine the effect of frequency and maximum acceleration on an element. In this paper, shaking table tests were performed using various frequencies and various maximum accelerations. The seismic performance characteristics of the functions of electrical equipment components were confirmed through tests.

참고문헌 (10)

  1. Chang SJ, "Evaluation of MCC seismic response according to frequency contents by shake table test", Nuclear Engineering and Technology, 53(4), pp.1345~1356 (2021)
  2. Jeong YS, "Fragility comparison of battery chargers for nuclear power plants depending on reinforcement of supporting for massive componennts", Trans Korean Soc Noise Vib Eng, 33(3), pp.264~272 (2023)
  3. Lee GH, "Seismic retrofitting of cabinet structures in nuclear power plant", EESK J Earthquake Eng, 7(4), pp.31~37 (2003)
  4. Lee GH, "The Optimum Damping Retrofit for Cablnet Structures of NPP by μ-GA", EESK J Earthquake Eng, 9(1), pp.1~7 (2005)
  5. EPRI, "Guidelines for Development of In-Cabinet Seimic Demand for Devices Mounted in Electrical Cabinets. NP-7146-SL R1", ~ (1995)
  6. Cho SG, "Comparative evaluation of in-cabinet amplification factor for devices mounted in electrical cabinets", Proceeding of KNS 2016 Autumn Meeting (2016), Korea Nuclear Society
  7. Gupta A, "Ritz vector approach for evaluating incabinet response spectra", Nucl Eng Des, 217, pp.49~62 (1999)
  8. Richards J, "High frequency seismic testing of potentially sensitivity components", SMiRT-23 (2015), IASMiRT
  9. Tseng YD, "A relay fragility test experience of nuclear power plant in Taiwan", SMiRT-23 (2015), IASMiRT
  10. "ANSI", IEEE C37.98. IEEE standard seismic testing of relays, 1987

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