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Title: Review and categorization of existing studies on the estimation of probabilistic failure metrics for Reactor Coolant Pressure Boundary piping and steam generator tubes in Nuclear Power Plants

Journal Article · · Progress in Nuclear Energy
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  1. Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Nuclear, Plasma, and Radiological Engineering
  2. Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) (Germany). Containment Dept. Safety Research Division
  3. SIGMA-PHASE, INC., Vail, AZ (United States)
  4. Tunisian Electricity and Gas Company (Tunisia). Alternative Energies Project
  5. Ryerson Univ., Toronto (Canada). Dept. of Civil Engineering
  6. Candu Energy Inc., Mississauga (Canada)
  7. Lithuanian Energy Inst., Kaunas (Lithuania). Lab. of Nuclear Installation Safety
  8. Korean Atomic Energy Research Inst. (KAERI), Daejeon (Korea, Republic of)
  9. Malaysian Nuclear Agency, Bangi (Malaysia)
  10. Russian Federation
  11. International Atomic Energy Agency (IAEA), Vienna (Austria)

This article presents the first output of the International Atomic Energy Agency (IAEA) Coordinated Research Project (CRP), titled Methodology for Assessing Pipe Failure Rates in Advanced Water-Cooled Reactors (AWCRs), launched in 2018. This IAEA CRP is aimed at developing a good-practices document for estimating the probabilistic failure metrics of piping in AWCRs. The reliability of piping that comprise the Reactor Coolant Pressure Boundary (RCPB) is important for maintaining safe and stable operations of Nuclear Power Plants (NPPs) because failure of those piping components could lead to undesirable consequences, such as plant shutdown, costly repair, the occurrence of Loss-of-Coolant Accidents (LOCAs) and, possibly, subsequent core damage or large release events. Probabilistic failure metrics (e.g., failure rate, failure frequency, or failure probability) of RCPB components are the key inputs to the Probabilistic Safety/Risk Assessment (PSA/PRA) and risk management of NPPs. The estimation of probabilistic failure metrics, however, is challenging, especially for AWCRs, due to the lack of operating experience. Therefore, as the first step of the IAEA CRP activities, this paper is developed to provide a literature review of the existing studies (from 2000 to April 2019) on the estimation of probabilistic failure metrics for RCPB piping and Steam Generator (SG) tubes of NPPs and to categorize them based on four criteria: (1) explicitness of incorporation of physical failure mechanisms; (2) types of failure characterization; (3) types of physical models for degradation; and (4) explicitness of consideration of maintenance. The existing studies are also analyzed from the viewpoint of the following key aspects: (i) uncertainty analysis, (ii) sensitivity analysis, (iii) validation strategies, and (iv) the areas of applications.

Research Organization:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE)
Grant/Contract Number:
NE0008700; 17–12614; I31030
OSTI ID:
1848156
Alternate ID(s):
OSTI ID: 1682451
Journal Information:
Progress in Nuclear Energy, Vol. 118, Issue C; ISSN 0149-1970
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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