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Advanced nuclear power plant regulation using risk-informed and performance-based methods

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  • Modarres, Mohammad

Abstract

This paper proposes and discusses implications of a largely probabilistic regulatory framework using best-estimate, goal-driven, risk-informed, and performance-based methods. This framework relies on continuous probabilistic assessment of performance of a set of time-dependent, safety-critical systems, structures, components, and procedures that assure attainment of a broad set of overarching technology-neutral protective, mitigative, and preventive goals under all phases of plant operations. In this framework acceptable levels of performance are set through formal apportionment so that they are commensurate with the overarching goals. Regulatory acceptance would be the based on the confidence level with which the plant conforms to these goals and performance objectives. The proposed framework uses the traditional defense-in-depth design and operation regulatory philosophy when uncertainty in conforming to specific goals and objectives is high. Finally, the paper discusses the steps needed to develop a corresponding technology-neutral regulatory approach from the proposed framework.

Suggested Citation

  • Modarres, Mohammad, 2009. "Advanced nuclear power plant regulation using risk-informed and performance-based methods," Reliability Engineering and System Safety, Elsevier, vol. 94(2), pages 211-217.
    • Handle: RePEc:eee:reensy:v:94:y:2009:i:2:p:211-217
    DOI: 10.1016/j.ress.2008.02.019
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    Cited by:

    1. Pence, Justin & Abolhelm, Marzieh & Mohaghegh, Zahra & Reihani, Seyed & Ertem, Mehmet & Kee, Ernie, 2018. "Methodology to evaluate the monetary benefit of Probabilistic Risk Assessment by modeling the net value of Risk-Informed Applications at nuclear power plants," Reliability Engineering and System Safety, Elsevier, vol. 175(C), pages 171-182.
    2. Bodda, Saran Srikanth & Gupta, Abhinav & Dinh, Nam, 2020. "Enhancement of risk informed validation framework for external hazard scenario," Reliability Engineering and System Safety, Elsevier, vol. 204(C).
    3. Bhuyan, Kasturi & Sharma, Hrishikesh, 2022. "Reliability analysis & performance-based code calibration for slabs/walls of protective structures subject to air blast loading," Reliability Engineering and System Safety, Elsevier, vol. 228(C).

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