Difference between revisions of "PRA Information"
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Latest revision as of 14:38, 22 August 2024
EPRI's Risk and Safety Management Program provides on-going research in methods and tools for conducting probabilistic risk assessments (PRAs). Working with experts around the globe, methods are improved by evaluating data and industry experience, developing applied research in numerical and logic modeling techniques, and developing new ways to apply PRAs in a risk-informed framework.
Basic information on PRAs as applied throughout the industry is available in the links below.
The PRA Applications Wiki is currently only available to EPRI members or members of the EPRI Risk and Safety Management (RSM) program.
The PRA Applications Wiki provides an introduction to the wide applications of PRA in the nuclear industry. This serves the needs of the global PRA community, providing a clear description, purpose, and rationale for each application. Both voluntary and regulatory PRA applications are described and this overview distinguishes those that require license-basis changes. References to more technical information provide a resource to expand your knowledge further.
The Fire PRA Wiki summarizes a structured framework for the conduct of a Fire PRA analysis. This supports your fire risk analysis team by providing an introduction to EPRI 1011989 / NUREG/CR-6850, updated with the latest information. The methodology addresses a Fire PRA that focuses on a Level 1 PRA (Core Damage Frequency) with consideration of Large Early Release Frequency. Additional references to specific recommended practices are provided, which address each key aspect of the analysis.
PRA Newly Developed Methods Wiki
With the issuance of Regulatory Guide 1.200, Revision 3 the US Nuclear Regulatory Commission (NRC) endorsed the concept of a “Newly Developed Method (NDM)” for use in Probabilistic Risk Assessments (PRAs). This Wiki shares information from previous evaluations within the industry specifically that have been provided to EPRI for inclusion in the Wiki. These evaluations of interest are those related to whether a PRA method is considered an NDM, and whether an NDM Peer review has been conducted to determine the technical adequacy of the method for inclusion in risk applications as necessary.
The EPRI High Winds (HW) Wiki lists relevant regulatory and methodological history of high wind risk analysis for nuclear power plants and provides references to relevant documents. This wiki is intended to be further developed to serve the needs of an HW risk analysis team by describing a structured framework for conduct of the overall analysis, as well as providing references to specific recommended practices to address each key aspect of the analysis.
The seismic probabilistic risk assessment (SPRA) Wiki summarizes a structured framework for the conduct of an SPRA analysis. This wiki is intended to serve the needs of a seismic risk analysis team by describing a structured framework for conduct of the overall analysis, as well as providing references to specific recommended practices to address each key aspect of the analysis. The wiki provides overall guidance, with an emphasis on seismic hazard analysis, SPRA systems analysis, equipment list development, fragility guidance, human reliability analysis, and model development and quantification.
This PRA Software Guidance wiki provides recommendations and guidance for using the EPRI PRA software. The EPRI software is designed to be very flexible to support a variety of research in the creating and applying PRA models. In many cases, this diverse set of features can be confusing or can lead to creation of models that cause problems in subsequent applications. Although there is rarely a "best way" to create a PRA model, some techniques will make the software more efficient or enable certain features. This wiki is designed to share these insights with the users.
Knowledge of the methods used in in the U.S. nuclear industry is in many cases distributed amongst different entities with various degrees of information availability and communication. This wiki provides a centralized, publicly available industry catalog for PRA methods in use.
Risk Analysis Methods and Tools for Advanced Reactors (RAMTAR) Wiki
Outlines past, present, and future research for advanced reactors by describing a wide range of risk analysis methods and tools that are applicable to various reactor designs, as well as providing references regulations, guidance, and research projects.
Additional information is available in a wide range of EPRI technical reports at Program 41.07.01: Risk and Safety Management.
