ML20181A393
| ML20181A393 | |
| Person / Time | |
|---|---|
| Issue date: | 06/30/2020 |
| From: | Gregory Bowman NRC/NRR/DRA |
| To: | Office of Nuclear Reactor Regulation |
| Schwab A | |
| Shared Package | |
| ML20181A423 | List: |
| References | |
| Download: ML20181A393 (10) | |
Text
Risk-Informed Licensing Reviews Greg Bowman Deputy Director, Division of Risk Assessment Office of Nuclear Reactor Regulation Risk-Informed Steering Committee Meeting June 30, 2020
Lessons Learned from Risk-Informed Licensing Submittals
Status 3
- Focus has been on reviews of TSTF-505 and the 10 CFR 50.69 license amendment requests
- 10 amendments for TSTF-505 have been issued
- 3 recently issued
- 7 under active review
- 16 amendments for 10 CFR 50.69 issued
- 2 recently issued
- 5 under active review
Staff Review Depends on the Application 4
Risk-Informed Inservice Inspection 50.69 SSC Categorization 5b, Risk-Informed Surveillance Frequencies NFPA-805, Risk-Informed Fire Protection 4b, Risk-Informed Completion Times Acceptability Required scope, level of detail, technical robustness, and plant representation Greater reliance on PRA More flexibility for licensee More complex staff review 50.69 after TSTF-505 review should reduce review effort
Factors That Impact Risk-Informed Licensing Review Time 5
ILRT TSTF-505 Use of F&O Closure Process No Deviations Limited Scope (IE PRA Only)
Review Time (h)
Extensive open F&Os Many Deviations Large PRA Scope (Ext. Hazards)
One-Time Changes RI-ISI 50.69 TSTF-425
Positive Trends 6
- Significant improvement in PRA Acceptability for applications
- Use of F&O Closure process reduced F&O review effort
- 50.69 industry LAR review boards
- Concurrent reviews
- Excellent audit support, including recent remote audits
- Continued dialogue
- Internal staff efforts to improve review efficiency
LIC-206, Revision 1:
Integrated Risk-Informed Decision-Making (RIDM) for Licensing Reviews
8 Motivation and Objectives RIDM Action Plan3 SRM-M1705112 SRM SECY 19-00361 Culture Change:
Increase Use of RIDM Integrate Technical Reviewers LIC-206 for Licensing Reviews 1 ML19183A408 2 ML17177A397 3 ML18317A117
9 Key Elements of LIC-206, Revision 1 Technical Reviewer Focused Guidance Guidance for technical reviewers on constructing risk arguments Clarified and Simplified Process Implementation Simplified flowcharts and checklist Sample safety evaluation language Enhanced Use of Risk Insights Based on Recent Experience Integrate risk insights to reach regulatory decisions Adjust scope and level of effort
10 Next Steps
- Rollout
- Implementation
- Lessons Learned and Improvements NRC
- Consider providing risk insights, if they strengthen the case