ML21202A214
| ML21202A214 | |
| Person / Time | |
|---|---|
| Issue date: | 03/11/2021 |
| From: | Matthew Humberstone NRC/RES/DRA/PRB |
| To: | |
| Humberstone, Matthew | |
| References | |
| Download: ML21202A214 (7) | |
Text
Licensing Modernization Project for Operating Reactors The Licensing Modernization Project (LMP) for Operating Reactors is one of several future focused research projects that were approved in 2020.
Matthew Humberstone, PhD Senior Reliability and Risk Analyst Performance and Reliability Branch Division of Risk Analysis Office of Nuclear Regulatory Research RES
NRCs level 3 PRA (L3PRA) model results LMP Methodology Gain risk-insights on operating reactor technology Highlight the challenges and feasibility of using the LMP methodology
LMP methodology
- Licensing Basis Development
- Selection of Licensing Basis Events
- Safety Classifications of Structures, Systems, and Components
- Defense-in-Depth adequacy NRCs L3PRA project
- Uses the operating reactor technology
- Led by NRCs Office of Nuclear Regulatory Research
- Uses current state-of-practice methods, tools, and data
- Gleans new risk-insights
MELCOR Accident Consequence Code System (MACCS)
- Severe accidents at nuclear power plants
- Consequence analysis
- Source Term and Radionuclide release
- Transport and Dispersion
- Dosimetry and Health Effects
- Risk and Uncertainty
Insights for Advanced Reactors
- Understanding the LMP methodology during PRA modeling is important.
- PRA output of designated consequence metrics should be calculated at the exclusion area boundary.
Insights for Operating Reactors
- Calculated risk using the LMP methodology were below the LMP threshold.
- Insights on safety margin can help in focusing future changes.
Conclusions The LMP methodology can be used beyond the original intent Results have insights for use in integrated decision-making Results provided insights on operating reactor safety profiles Future Opportunities Expanding scope Leveraging risk results in future risk-initiatives
Contact Information Matthew Humberstone Matthew.Humberstone@nrc.gov