ML18059A956
| ML18059A956 | |
| Person / Time | |
|---|---|
| Issue date: | 03/07/2018 |
| From: | Nathan Siu NRC/RES/DRA/PRB |
| To: | |
| References | |
| Download: ML18059A956 (8) | |
Text
US NRC PRA Use and Development:
2018 Update 19th Annual WGRISK Meeting Nathan Siu Division of Risk Analysis Office of Nuclear Regulatory Research U.S. Nuclear Regulatory Commission March 7, 2018
NRC Regulatory Process and Components
[3,7]
PSA Use and Development Report Chapters
[3-7] [2-9] [3,7]
- 2. Framework and Environment
- 3. Numerical Safety Criteria
- 4. Status and Scope of Studies
- 5. Methodology and Data
- 6. Notable Results
- 7. Applications and Decision
[3-7] Making
- 8. Future Developments and Research
- 9. International Activities Regulatory Environment [2,9]
2
Regulatory Environment the agency focuses on continuous improvement of its activities and processes and demonstrates a commitment to effectiveness, efficiency, and innovation in all its regulatory activities.
- NUREG-1614, Vol. 7
- Trends include
- Staff
- Budget
- Information and IT
- Solutions include
- Leveraging resources
- Transformation and Innovation Initiatives 3
Risk-Informed Regulations and Guidance
- RG 1.174, Rev. 3 (2018)
- Fuzzified boundaries
- Defense-in-depth
- NUREG-1855, Rev. 1 (2017)
- Risk aggregation
- ASME/ANS PRA Standard (ongoing)
- External hazards
- Probabilistic Flood Hazard Assessment (PFHA) - basis for probabilistic approach 4
Risk-Informed Licensing, Oversight, and Operational Experience
- Growing number of applications
- Routine activities
- Reactor Oversight Program (ROP)
- Accident Sequence Precursor (ASP) Program
- Post-Fukushima activities
- Implementation of Orders
- Seismic and flooding reevaluations
- Challenges, initiatives
- New methods
- PRA realism (fire, ROP, FLEX)
- SSC classification (10 CFR 50.69)
- Tornado missiles 5
Technical Support Ongoing Looking Forward
- SPAR models
- Industry trends
- Expanded scope (organizational factors?
- Integrated Site PRA Level 0/enterprise risk?)
- Fire research (e.g., HEAF)
- Knowledge engineering (e.g., Big Data, AI) and PRA
- Flooding PRA (PFHA+)
- RIDM (Risk Aggregation)
Knowledge Management
- Seminars (e.g., WASH-1400, UCS, Safety Goals)
- NUREG/KMs
- Training, mentoring, etc.
6
Some Recent General Resources
- Strategic Plan: Fiscal Years 2018-2022, NUREG-1614, Vol. 7, 2017.
- 2017-2018 Information Digest, NUREG-1350, Vol. 29, 2017.
- NRCs High-Value Datasets, https://www.nrc.gov/data/
- Commission Meetings, Agendas, Slides, Transcripts, Meeting SRMs, and Full Written Explanation for Closed Meetings, https://www.nrc.gov/reading-rm/doc-collections/commission/tr/
- Japan Lessons Learned, https://www.nrc.gov/reactors/operating/ops-experience/japan-dashboard.html
- Research Activities: FY 2015-FY2017, NUREG-1925, Vol. 3, 2016.
- Research Activities, https://www.nrc.gov/about-nrc/regulatory/research.html
- Review and Evaluation of the Nuclear Regulatory Commission Safety Research Program, NUREG-1635, Vol. 12, 2016.
- Biennial Review and Evaluation of the NRC Safety Research Program, USNRC Advisory Committee on Reactor Safeguards, February 26, 2018. (ML18057B139)
- NRC Webcast Portal, https://video.nrc.gov/#archives-main 7
Some Recent PRA and RIDM Resources
- Risk-Informed Activities, https://www.nrc.gov/about-nrc/regulatory/risk-informed/rpp.html
- An Approach for Using Probabilistic Risk Assessment in Risk-informed Decisions on Plant-Specific Changes to the Licensing Basis, Regulatory Guide 1.174, Rev. 3, 2018.
- Guidance on the Treatment of Uncertainties Associated with PRAs in Risk-Informed Decisionmaking, NUREG-1855, Rev. 1, 2017.
- U.S. Nuclear Regulatory Commission Accident Sequence Precursor Program: 2016 Annual Report, 2017. ML17153A366 8