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​​​​​​​Enhancement of Legacy Probabilistic Risk Assessment Tools

 

G​oal

To enhance the legacy risk analysis tools and methods currently used in the nuclear power industry.

The use of legacy probabilistic risk assessment (PRA) tools is fundamental to nuclear power plant operations and the Reactor Oversight Program's regulatory infrastructure in the U.S. However, application of legacy tools and methods have demonstrated that complexity, high modeling-resource requirements and lengthy analysis times make the use of legacy PRA tools more complicated.​

Outco​​me

Researchers will develop solutions to challenges associated with the legacy PRA tools. Based upon recent industry concerns and feedback, the project will focus on three high-priority areas: (1) quantification speed to support decision making, (2) dependency modeling of human-related basic events, and (3) integration of multiple-hazard models for better risk insights.

Planned Major Accomplishments:​

  • 2022—provide solutions for the highest-priority challenges in PRA modeling, simulations, and analyses using traditional PRA tools and methods

  • 2024—complete advanced development of an enhanced modeling and maintenance approach for legacy PRA applications

 

Related Reports 

 

 

Enhancement of Industry Legacy Probabilistic Risk Assessment Methods and Tools, INL/EXT-21-644482347619/29/2021 8:03:58 PMU.S. Department of Energy Office of Nuclear Energy This information was prepared as an account of work sponsored by an agency of the U.S. Government The need for research to address 198https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf
R&D Roadmap to Enhance Industry Legacy Probabilistic Risk Assessment Methods and Tools, INL/EXT-20-592021995388/12/2020 3:36:25 PMAndrew Miller, Stephen Hess, and Curtis Smith U.S. Department of Energy Office of Nuclear Energy This information was prepared as an account of work sponsored by an agency of the 714https://lwrs.inl.gov/RiskInformed Safety Margin Characterization/Forms/AllItems.aspxpdfFalsepdf










PRA Fault Tree.png

An illustration of the PRA fault tree displayed in the SAPHIRE tool. ​​