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Title: Multi-Hazard Advanced Seismic Probabilistic Risk Assessment Tools and Applications

Abstract

Design of nuclear power plant (NPP) facilities to resist natural hazards has been a part of the regulatory process from the beginning of the NPP industry in the United States (US), but has evolved substantially over time. The original set of approaches and methods was entirely deterministic in nature and focused on a traditional engineering margins-based approach. However, over time probabilistic and risk-informed approaches were also developed and implemented in US Nuclear Regulatory Commission (NRC) guidance and regulation. A defense-in-depth framework has also been incorporated into US regulatory guidance over time. As a result, today, the US regulatory framework incorporates deterministic and probabilistic approaches for a range of different applications and for a range of natural hazard considerations. This framework will continue to evolve as a result of improved knowledge and newly identified regulatory needs and objectives, most notably in response to the NRC activities developed in response to the 2011 Fukushima accident in Japan. Although the US regulatory framework has continued to evolve over time, the tools, methods and data available to the US nuclear industry to meet the changing requirements have not kept pace. Notably, there is significant room for improvement in the tools and methods available formore » external event probabilistic risk assessment (PRA), which is the principal assessment approach used in risk-informed regulations and risk-informed decision-making applied to natural hazard assessment and design. This is particularly true if PRA is applied to natural hazards other than seismic loading. Development of a new set of tools and methods that incorporate current knowledge, modern best practice, and state-of-the-art computational resources would lead to more reliable assessment of facility risk and risk insights (e.g., the SSCs and accident sequences that are most risk-significant), with less uncertainty and reduced conservatisms.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
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  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1369534
Report Number(s):
INL/EXT-16-40055
TRN: US1703387
DOE Contract Number:
AC07-05ID14517
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; NUCLEAR POWER PLANTS; NUCLEAR INDUSTRY; REACTOR ACCIDENTS; HAZARDS; SUPERCONDUCTING SUPER COLLIDER; RISK ASSESSMENT; FUKUSHIMA DAIICHI NUCLEAR POWER STATION; NUCLEAR POWER; Multi-Hazard; Probabilistic Risk Assessment; Seismic

Citation Formats

Coleman, Justin L., Bolisetti, Chandu, Veeraraghavan, Swetha, Parisi, Carlo, Prescott, Steven R., and Gupta, Abhinav. Multi-Hazard Advanced Seismic Probabilistic Risk Assessment Tools and Applications. United States: N. p., 2016. Web. doi:10.2172/1369534.
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Coleman, Justin L., Bolisetti, Chandu, Veeraraghavan, Swetha, Parisi, Carlo, Prescott, Steven R., & Gupta, Abhinav. Multi-Hazard Advanced Seismic Probabilistic Risk Assessment Tools and Applications. United States. doi:10.2172/1369534.
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Coleman, Justin L., Bolisetti, Chandu, Veeraraghavan, Swetha, Parisi, Carlo, Prescott, Steven R., and Gupta, Abhinav. Thu . "Multi-Hazard Advanced Seismic Probabilistic Risk Assessment Tools and Applications". United States. doi:10.2172/1369534. https://www.osti.gov/servlets/purl/1369534.
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@article{osti_1369534,
title = {Multi-Hazard Advanced Seismic Probabilistic Risk Assessment Tools and Applications},
author = {Coleman, Justin L. and Bolisetti, Chandu and Veeraraghavan, Swetha and Parisi, Carlo and Prescott, Steven R. and Gupta, Abhinav},
abstractNote = {Design of nuclear power plant (NPP) facilities to resist natural hazards has been a part of the regulatory process from the beginning of the NPP industry in the United States (US), but has evolved substantially over time. The original set of approaches and methods was entirely deterministic in nature and focused on a traditional engineering margins-based approach. However, over time probabilistic and risk-informed approaches were also developed and implemented in US Nuclear Regulatory Commission (NRC) guidance and regulation. A defense-in-depth framework has also been incorporated into US regulatory guidance over time. As a result, today, the US regulatory framework incorporates deterministic and probabilistic approaches for a range of different applications and for a range of natural hazard considerations. This framework will continue to evolve as a result of improved knowledge and newly identified regulatory needs and objectives, most notably in response to the NRC activities developed in response to the 2011 Fukushima accident in Japan. Although the US regulatory framework has continued to evolve over time, the tools, methods and data available to the US nuclear industry to meet the changing requirements have not kept pace. Notably, there is significant room for improvement in the tools and methods available for external event probabilistic risk assessment (PRA), which is the principal assessment approach used in risk-informed regulations and risk-informed decision-making applied to natural hazard assessment and design. This is particularly true if PRA is applied to natural hazards other than seismic loading. Development of a new set of tools and methods that incorporate current knowledge, modern best practice, and state-of-the-art computational resources would lead to more reliable assessment of facility risk and risk insights (e.g., the SSCs and accident sequences that are most risk-significant), with less uncertainty and reduced conservatisms.},
doi = {10.2172/1369534},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 2016},
month = {Thu Sep 01 00:00:00 EDT 2016}
}
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DOI:  10.2172/1369534
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