ML23066A240
| ML23066A240 | |
| Person / Time | |
|---|---|
| Issue date: | 03/16/2023 |
| From: | Matthew Humberstone NRC/RES/DRA/PRB |
| To: | |
| References | |
| Download: ML23066A240 (1) | |
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Licensing Modernization Project (LMP)
The LMP methodology supports licensing-basis development for non-light-water reactors through selection of licensing-basis events safety classification of structures, systems, and components evaluation of defense-in-depth adequacy Operating Reactors Operating reactors have a successful history of leveraging risk insights and risk tools to support licensing, oversight, and operations applications.
The LMP methodology is a technology-inclusive approach that could provide additional risk insights to support operating reactors but is not currently envisioned for initial licensing of light-water reactors.
LMP for Operating Reactors: Seeing Risk Insights Through a New Lens Office of Nuclear Regulatory Research
The LMP methodology uses risk metrics that are derived from a level 3 probabilistic risk assessment (PRA) model.
The NRC staff have developed a level 3 PRA model for a pressurized-water reactor design.
NRC Level L3PRA Project The results from the NRCs L3PRA model were used to evaluate the feasibility of the LMP approach for operating reactor technology.
The NRCs L3PRA model results were used to generate the peak dose in rem at the exclusion area boundary (EAB).
The L3PRA model results were then split into three groups depending on their dose at the EAB. These groups were then plotted on the LMPs frequency-consequence curve.
Results
Conclusions Useful for Operating Reactors This research project showed that the LMP methodology may be useful beyond the original intent for non-light-water reactors and could provide additional risk insights for operating reactors.
Operating Reactors Safety The results from this research project confirm that the safety profile for this modeled reactor design is consistent with our current understanding.
Future Opportunities This research highlighted the future opportunities for expanding the use of the LMPs methods and tools.
Advanced Reactors This effort provided the NRC staff with opportunities to develop more familiarity with the LMP methodology and will help in supporting future advanced reactor licensing.
Contact Information Matthew Humberstone Matthew.Humberstone@nrc.gov