ML23045A285
| ML23045A285 | |
| Person / Time | |
|---|---|
| Issue date: | 03/14/2023 |
| From: | Jeffery Wood Office of Nuclear Regulatory Research |
| To: | |
| References | |
| Download: ML23045A285 (1) | |
Text
Advancing the Infrastructure for Using PRA in Decision-Making Technical Session T5 Jeffery Wood Senior Reliability and Risk Analyst Office of Nuclear Regulatory Research 1
Agenda NRCs Framework for Using PRAs and Risk in Decision Making Maintaining and Enhancing Infrastructure and Guidance for Use of PRAs PRA Tools to Support Risk Insights 2
Building a Foundation for Risk-Informed Decision Making RIDM Achieved Building PRA Standards Confidence in PRA results Peer Review Process Regulatory Guides PRA Models and Tools PRA Methods and References PRA Acceptability 3 3
NRCs Framework for Achieving PRA Acceptability Endorsement through Reduce need for NRC Regulatory Guides in-depth review NRC Staff Position Independent peer National review process Peer Consensus Review Standards Endorsement of peer review ASME/ANS Joint guidance Committee on Nuclear Risk Management 4 4
Vision for Next Revisions to Regulatory Guide 1.200 Endorsement of PRA standards to support: New and
- Consistent with 10 CFR Part 52 applications requirements
- All hazards and all operating modes
- Design-stage PRA Endorse Low Power and Shutdown PRA Standard Endorse Level 2 PRA Standard (anticipated in 2023)
Endorse Advanced LWR PRA Standard Endorse 2022 Level 1 / LERF PRA Standard ASME/ANS RA-S-1.1-2022 Established staff positions in existing Regulatory Guides 5 5
Providing the basis for Non-LWR RIDM RIDM for Non-LWRs Review Guidance Non-LWR PRA Methods
- Regulatory Guide 1.247 issued for trial use Treatment of
- Endorses Non-LWR PRA standard (ASME/ANS Uncertainties RA-S-1.4-2021)
- PRA Standard scope:
- Initiating event through release consequences
- All modes
- Design phase 6 6
Developing Modern Tools to Support Efficient Use of PRA Search PRA standard requirements Requirement text compare Compare revisions IDENTIFY all important Compare Regulatory Guide positions significant components aspects contributing to Track NRC staff notes and workflow plant risk.
Publicly available database version under development (limited to publicly available documents) 7 7
PRA Tools Supporting RIDM SPAR models
- Providing risk insights for reactor oversight, generic safety issues, special studies, inspection samples
- Representing as-built, as-operated condition by updating and benchmarking with licensee PRA models
Component Importance Measures CDF contribution by Making risk information accessible Initiating Event Easy-to-use, interactive dashboard Comparison of CDF by Hazard Category Supporting Be riskSMART framework Communicating risk insights 9 9
Key Messages NRC has developed a framework for establishing PRA acceptability that provides a basis for RIDM activities.
NRC develops and maintains PRA tools to incorporate risk insights to our work and RIDM activities.
Benchmarking against licensee PRA results helps to ensure up-to-date risk insights.
NRC is continuing to develop guidance and tools that will support using PRA results and RIDM activities for new and advanced non-LWR and LWR applications.
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