A computational risk assessment approach to the integration of seismic and flooding hazards with internal hazards

Sezen, Halil; Hur, J.; Smith, Curtis L.; Aldemir, T.; Denning, Rich

doi:10.1016/j.nucengdes.2019.110341

A computational risk assessment approach to the integration of seismic and flooding hazards with internal hazards

Journal Article · Fri Sep 27 00:00:00 EDT 2019 · Nuclear Engineering and Design

DOI:https://doi.org/10.1016/j.nucengdes.2019.110341· OSTI ID:1638262

Sezen, Halil ^[1]; Hur, J. ^[1]; ^[2]; Aldemir, T. ^[1]; Denning, Rich ^[1]

The Ohio State Univ., Columbus, OH (United States)
Idaho National Lab. (INL), Idaho Falls, ID (United States)

Probabilistic risk assessment (PRA) of nuclear power plants historically focuses on internal events at the plant, rather than external hazards. Although the importance of external hazards risk analysis is now well recognized, the methods for assessing the risk associated with low probability external hazards rely heavily on subjective judgment of specialists, often using conservative elements in the analysis, as is the case with the Conservative Deterministic Failure Margin approach commonly used for seismic PRA. The U.S. Department of Energy Light Water Reactor Sustainability program has been investigating the use of first principles analyses to provide a more realistic assessment of the risk of external hazards, in a process called computational risk assessment (CRA). Efforts undertaken are described in the development of CRA methods to integrate the risk associated with seismic and flooding events into traditional PRA. Further, the results of four case studies are presented.

View Accepted Manuscript (DOE)

Research Organization:: Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP)

Grant/Contract Number:: AC07-05ID14517

OSTI ID:: 1638262

Alternate ID(s):: OSTI ID: 1776135
OSTI ID: 22893635

Report Number(s):: INL/JOU--20-58332-Rev000

Journal Information:: Nuclear Engineering and Design, Journal Name: Nuclear Engineering and Design Journal Issue: 2019 Vol. 355; ISSN 0029-5493

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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A computational risk assessment approach to the integration of seismic and flooding hazards with internal hazards

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References (14)

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