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Enhancement in the Seismic Performance of a Nuclear Piping System using Multiple Tuned Mass Dampers

Author

Listed:
  • Shinyoung Kwag

    (Korea Atomic Energy Research Institute, Daejeon 34057, Korea)

  • Jinsung Kwak

    (Korea Atomic Energy Research Institute, Daejeon 34057, Korea)

  • Hwanho Lee

    (Korea Atomic Energy Research Institute, Daejeon 34057, Korea)

  • Jinho Oh

    (Korea Atomic Energy Research Institute, Daejeon 34057, Korea)

  • Gyeong-Hoi Koo

    (Korea Atomic Energy Research Institute, Daejeon 34057, Korea)

Abstract

In a nuclear power plant, it is essential to improve the seismic safety of the piping system for the coolant transfer to cool the high temperature caused by the nuclear reaction. Under this background, this study makes two major contributions. The first is that though tuned mass dampers (TMDs) were originally used only to reduce the vibration of piping itself, through this research, it was first proved that it had a positive effect on the improvement of the seismic performance of nuclear piping systems. Additionally, this study proposed a design approach that effectively obtains the optimal design values of TMDs associated with seismic performance. In order to effectively derive the TMD optimum design values, we not only utilized the existing TMD optimum design formula, but also additionally proposed a frequency response analysis-based TMD optimal design method. As a result, it was seen that primary responses of system were significantly reduced under the input seismic load due to the use of TMDs for the piping system. It was also confirmed that the use of the existing TMD formula brought about a similar degree of response reduction effect, while it was possible to get the improved effect when using the proposed method.

Suggested Citation

  • Shinyoung Kwag & Jinsung Kwak & Hwanho Lee & Jinho Oh & Gyeong-Hoi Koo, 2019. "Enhancement in the Seismic Performance of a Nuclear Piping System using Multiple Tuned Mass Dampers," Energies, MDPI, vol. 12(11), pages 1-26, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:11:p:2077-:d:235851
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    References listed on IDEAS

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    1. Kwag, Shinyoung & Gupta, Abhinav & Dinh, Nam, 2018. "Probabilistic risk assessment based model validation method using Bayesian network," Reliability Engineering and System Safety, Elsevier, vol. 169(C), pages 380-393.
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    Cited by:

    1. Piotr Brzeski & Mateusz Lazarek & Przemyslaw Perlikowski, 2020. "Influence of Variable Damping Coefficient on Efficiency of TMD with Inerter," Energies, MDPI, vol. 13(23), pages 1-14, November.
    2. Sung Gook Cho & Seongkyu Chang & Deokyong Sung, 2020. "Application of Tuned Mass Damper to Mitigation of the Seismic Responses of Electrical Equipment in Nuclear Power Plants," Energies, MDPI, vol. 13(2), pages 1-22, January.

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