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
NRC s 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 NRC s Framework for Achieving PRA Acceptability
Endorsement through Reduce need for NRC Regulatory Guides in-depth review NRC Staff Position
National Independent peer Consensus Peer review process Standards Review Endorsement of
ASME/ANS Joint peer review Committee on Nuclear guidance 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 Endorse Level 2 PRA Standard Shutdown 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 requirementsRequirement text compare Compare revisions IDENTIFY all important Compare Regulatory Guide positionssignificant 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 SAPHIRE
- Maintaining PRA software and Cloud leveraging cloud-based services
8 8 Component Importance Measures
CDF contribution by Making risk information accessible Initiating Event
Easy-to-use, interactive dashboard
Comparison of CDF Supporting by H a za rd C ate go r y 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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