TY - GEN
T1 - Risk-Informed Analysis of Nuclear Power Plant FLEX Storage Building
AU - Farshadmanesh, Pegah
AU - Sakurahara, Tatsuya
AU - Reihani, Seyed
AU - Kee, Ernie
AU - Mohaghegh, Zahra
N1 - Funding Information:
This material is based on work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Energy University Program (NEUP) under Award #19-16298. Any opinions, findings, conclusions, or recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the Department of Energy, Office of Science, Office of Nuclear Energy University Program. The authors
Publisher Copyright:
©ESREL2020-PSAM15 Organizers.
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - Beyond-Design-Basis External Events
KW - Beyond-Design-Basis External Events (BDBEEs)
KW - Diverse and Flexible Coping Strategies (FLEX)
KW - Integrated Risk-Informed Design (I-RID)
KW - Probabilistic Risk Assessment (PRA)
KW - Uncertainty Quantification
UR - http://www.scopus.com/inward/record.url?scp=85110258129&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85110258129&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85110258129
T3 - 30th European Safety and Reliability Conference, ESREL 2020 and 15th Probabilistic Safety Assessment and Management Conference, PSAM 2020
SP - 2437
EP - 2443
BT - 30th European Safety and Reliability Conference, ESREL 2020 and 15th Probabilistic Safety Assessment and Management Conference, PSAM 2020
A2 - Baraldi, Piero
A2 - Di Maio, Francesco
A2 - Zio, Enrico
PB - Research Publishing Services
T2 - 30th European Safety and Reliability Conference, ESREL 2020 and 15th Probabilistic Safety Assessment and Management Conference, PSAM 2020
Y2 - 1 November 2020 through 5 November 2020
ER -