Risk-informed analysis of nuclear power plant flex storage building

Pegah Farshadmanesh, Tatsuya Sakurahara, Seyed Reihani, Ernie Kee, Zahra Mohaghegh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

After the Fukushima-Dai-ichi accident (March 2011), one of the main lessons learned from this accident was that there were challenges associated with the loss of safety systems following Beyond-Design-Basis External Events (BDBEEs), such as seismic events and external flooding, that may influence the safety systems of the U.S. nuclear fleet. The U.S. nuclear industry has proposed safety strategies, called Diverse and Flexible Coping Strategies (FLEX), to serve as an additional layer of defense-in-depth strategies in Nuclear Power Plants (NPPs) for maintaining long-term integrity of containment as well as for the core and spent fuel cooling. This study (i) summarizes the Integrated Risk-Informed Design (I-RID) methodological framework that integrates underlying failure mechanisms related to the FLEX Storage building with plant Probabilistic Risk Assessment (PRA), while evaluating the risk and cost of different design options in a unified framework, and (ii) reports the recent developments for the I-RID framework to better address sources of uncertainty. This research increases the realism of failure probability estimation associated with different FLEX strategies, supporting decision-makers to generate cost-effective FLEX strategies that ensure safety of NPPs following BDBEEs.

Original languageEnglish (US)
Title of host publicationProceedings of the 30th European Safety and Reliability Conference and the 15th Probabilistic Safety Assessment and Management Conference
EditorsPiero Baraldi, Francesco Di Maio, Enrico Zio
PublisherResearch Publishing, Singapore
Pages2437-2443
Number of pages7
ISBN (Print)9789811485930
DOIs
StatePublished - 2020
Event30th European Safety and Reliability Conference, ESREL 2020 and 15th Probabilistic Safety Assessment and Management Conference, PSAM15 2020 - Venice, Italy
Duration: Nov 1 2020Nov 5 2020

Publication series

NameProceedings of the 30th European Safety and Reliability Conference and the 15th Probabilistic Safety Assessment and Management Conference

Conference

Conference30th European Safety and Reliability Conference, ESREL 2020 and 15th Probabilistic Safety Assessment and Management Conference, PSAM15 2020
Country/TerritoryItaly
CityVenice
Period11/1/2011/5/20

Keywords

  • Beyond-Design-Basis External Events
  • Beyond-Design-Basis External Events (BDBEEs)
  • Diverse and Flexible Coping Strategies (FLEX)
  • Integrated Risk-Informed Design (I-RID)
  • Probabilistic Risk Assessment (PRA)
  • Uncertainty Quantification

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Safety Research

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