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Thermal–hydraulic passive system reliability-based design approach

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  • Burgazzi, Luciano

Abstract

In order to enhance the safety of new advanced reactors, optimization of the design of the implemented passive systems is required. Therefore, a reliability-based approach to the design of a thermal–hydraulic passive system is being considered, and a limit state function (LSF)-based approach elicited from mechanical reliability is developed. The concept of functional failure, i.e., the possibility that the load will exceed the capacity in a reliability physics framework, in terms of performance parameter is introduced here for the reliability evaluation of a natural circulation passive system, designed for decay heat removal of innovative light water reactors. Water flow rate circulating through the system is selected as passive system performance characteristic parameter and the related limit state or performance function is defined. The probability of failure of the system is assessed in terms of safety margin, corresponding to the LSF. Results help the designer to determine the allowable limits or set the safety margin for the system operation parameters, to meet the safety and reliability requirements.

Suggested Citation

  • Burgazzi, Luciano, 2007. "Thermal–hydraulic passive system reliability-based design approach," Reliability Engineering and System Safety, Elsevier, vol. 92(9), pages 1250-1257.
    • Handle: RePEc:eee:reensy:v:92:y:2007:i:9:p:1250-1257
    DOI: 10.1016/j.ress.2006.07.008
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    References listed on IDEAS

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    1. Santosh, a & Vinod, Gopika & Shrivastava, O.P. & Saraf, R.K. & Ghosh, A.K. & Kushwaha, H.S., 2006. "Reliability analysis of pipelines carrying H2S for risk based inspection of heavy water plants," Reliability Engineering and System Safety, Elsevier, vol. 91(2), pages 163-170.
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    Cited by:

    1. Zio, E. & Pedroni, N., 2012. "Monte Carlo simulation-based sensitivity analysis of the model of a thermal–hydraulic passive system," Reliability Engineering and System Safety, Elsevier, vol. 107(C), pages 90-106.
    2. Burgazzi, Luciano, 2008. "About time-variant reliability analysis with reference to passive systems assessment," Reliability Engineering and System Safety, Elsevier, vol. 93(11), pages 1682-1688.
    3. Woo, Tae-Ho & Lee, Un-Chul, 2010. "Safety assessment for the passive system of the nuclear power plants (NPPs) using safety margin estimation," Energy, Elsevier, vol. 35(4), pages 1799-1804.
    4. Arul, A. John & Iyer, N. Kannan & Velusamy, K., 2009. "Adjoint operator approach to functional reliability analysis of passive fluid dynamical systems," Reliability Engineering and System Safety, Elsevier, vol. 94(12), pages 1917-1926.
    5. Zio, Enrico & Di Maio, Francesco & Tong, Jiejuan, 2010. "Safety margins confidence estimation for a passive residual heat removal system," Reliability Engineering and System Safety, Elsevier, vol. 95(8), pages 828-836.
    6. Zio, E. & Pedroni, N., 2009. "Functional failure analysis of a thermal–hydraulic passive system by means of Line Sampling," Reliability Engineering and System Safety, Elsevier, vol. 94(11), pages 1764-1781.
    7. Francesco Di Maio & Nicola Pedroni & Barnabás Tóth & Luciano Burgazzi & Enrico Zio, 2021. "Reliability Assessment of Passive Safety Systems for Nuclear Energy Applications: State-of-the-Art and Open Issues," Energies, MDPI, vol. 14(15), pages 1-17, August.
    8. Olatubosun, Samuel Abiodun & Zhang, Zhijian, 2019. "Dependency consideration of passive system reliability by coupled stress-strength interference/functional relations of parameters approach," Reliability Engineering and System Safety, Elsevier, vol. 188(C), pages 549-560.

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