ML20080M175
| ML20080M175 | |
| Person / Time | |
|---|---|
| Issue date: | 03/23/2020 |
| From: | Raymond Furstenau Office of Nuclear Regulatory Research |
| To: | Office of Nuclear Regulatory Research |
| T. Aird | |
| Shared Package | |
| ML20080M135 | List: |
| References | |
| Download: ML20080M175 (5) | |
Text
Welcome Ray Furstenau Director, Office of Nuclear Regulatory Research 5th Annual NRC PFHA Research Workshop NRC HQ, Rockville, MD February 19-21, 2020 1
PFHA Research Objective
- NRCs Risk-Informed Regulatory Policy has been translated into practice in some external hazard areas (e.g., seismic, high winds)
- Flood hazard assessment is a significant gap
- Deterministic approaches do not quantify uncertainties
- PFHA research is aimed at filling this gap
- Quantify uncertainties
- Support risk-informed decisionmaking 2
Addressing Current and Future Needs
- Recent experience has highlighted importance of risk-informing flood hazard assessments
- Flooding events at or near NPPs in U.S.
and abroad
- Flooding OpE session in this years workshop
- Post-Fukushima flood hazard reevaluations and integrated assessments
- Ongoing and new risk-informed initiatives
- FLEX, Risk-informed categorization and treatment of SSCs, Risk-informing inspections and other licensing and oversight activities
- Readiness for licensing new and advanced reactor designs 3
Progress
- Phased Approach
- Technical basis
- Pilot Studies
- Guidance
- Bulk of technical basis research completed
- Climate
- Precipitation
- Riverine flooding
- Storm surge
- Reliability of flood protection and mitigation
- Modeling frameworks 4
- In FY20 NRC/RES turned focus towards PFHA Pilot Studies Current - Fine-tune scenario-specific issues PFHA - Demonstrate development of hazard curves for multiple flooding Research mechanism and spectrum of impacts
- Inform development of guidance Focus
- 3 PFHA Pilots
- Site-scale Flooding (Local Intense Precipitation)
- Riverine Flooding
- Coastal Flooding
- Discussion with User Offices on scope and format of guidance
- PFHA workshops provide valued input from a broad cross-section of partners and stakeholders