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A New Reliability Allocation Method Based on PSA and AHP for Fusion Reactors

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  • Ming Sun

    (Institute of Nuclear Energy Safety Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
    University of Science and Technology of China, Hefei 230027, China)

  • Taosheng Li

    (Institute of Nuclear Energy Safety Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China)

  • Jie Yu

    (Institute of Nuclear Energy Safety Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China)

  • Daochuan Ge

    (Institute of Nuclear Energy Safety Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China)

  • Ying Bai

    (School of Artificial Intelligence and Big Data, Hefei University, Hefei 230601, China)

  • Longlong Tao

    (Institute of Nuclear Energy Safety Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
    University of Science and Technology of China, Hefei 230027, China)

Abstract

Reasonable and feasible reliability index allocation is significant for improving safety and reducing costs for fusion reactors. Although the reliability index is allocated when designing some key systems, reliability allocation is not implemented from the overall layer to the system and component layers for fusion reactors. In this contribution, fusion reactors are divided into different layers by applying the Analytic Hierarchy Process (AHP); these layers include the overall layer, system layer and component layer, failure mode layer, etc. Combining the Probabilistic Safety Assessment (PSA) model for fusion reactors and AHP, the reliability index is allocated from the overall layer to the system and component layer. Firstly, a new reliability index allocation method based on PSA and AHP for fusion reactors is proposed. Secondly, the PSA model for an in-vessel LOCA accident of fusion reactors is selected as a case study to demonstrate the applications of the proposed method. Lastly, the relationship between PSA, items safety classification and reliability allocation are discussed. The allocation results indicate that the proposed method provides a more systematic reliability allocation scheme and contributes to improving the safety and economy of fusion reactors.

Suggested Citation

  • Ming Sun & Taosheng Li & Jie Yu & Daochuan Ge & Ying Bai & Longlong Tao, 2022. "A New Reliability Allocation Method Based on PSA and AHP for Fusion Reactors," Energies, MDPI, vol. 15(13), pages 1-10, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:13:p:4850-:d:853974
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    References listed on IDEAS

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    1. Borysiewicz, Mieczysław & Kowal, Karol & Potempski, Sławomir, 2015. "An application of the value tree analysis methodology within the integrated risk informed decision making for the nuclear facilities," Reliability Engineering and System Safety, Elsevier, vol. 139(C), pages 113-119.
    2. Bellaera, R. & Bonifetto, R. & Di Maio, F. & Pedroni, N. & Savoldi, L. & Zanino, R. & Zio, E., 2020. "Integrated deterministic and probabilistic safety assessment of a superconducting magnet cryogenic cooling circuit for nuclear fusion applications," Reliability Engineering and System Safety, Elsevier, vol. 201(C).
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    Cited by:

    1. Ferenc Bognár & Petra Benedek, 2022. "A Novel AHP-PRISM Risk Assessment Method—An Empirical Case Study in a Nuclear Power Plant," Sustainability, MDPI, vol. 14(17), pages 1-15, September.

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