ML24067A010
| ML24067A010 | |
| Person / Time | |
|---|---|
| Site: | Nuclear Energy Institute |
| Issue date: | 03/08/2024 |
| From: | Broadbent G, Pimentel F Office of Nuclear Reactor Regulation, Nuclear Energy Institute |
| To: | |
| References | |
| Download: ML24067A010 (5) | |
Text
©2024 Nuclear Energy Institute Greg Broadbent, Consultant, Retired Entergy Frankie Pimentel, Sr. Project Manager -
Engineering & Risk, NEI March 8, 2024 Impacts of RG 1.183 Rev. 1 and SAND2023-01313 on Environmental Qualification
©2024 Nuclear Energy Institute Responses to DG-1389 Comments 7-1 and 13-3 the acceptability of continuing to use TID-14844 source term methodology for EQ for licensees that have modified their licensing bases to higher burnup or enrichment than those specified in RG 1.183, Revision 0 (above the 62,000 MWd/MTU of 5 weight-percent uranium-235), has not been assessed. Therefore, when these types of significant plant modifications occur, licensees need to evaluate the impacts on EQ consistent with the modifications made and make updates as appropriate. If the licensee wishes to continue to use TID-14844 for EQ after increasing above the parameters specified in RG 1.183, Revision 0, or when making other plant modifications that affect the applicability of previously approved methods or assumptions, the licensee must demonstrate that how it is using the guidance will satisfy applicable NRC requirements.
Current Staff Position on EQ
©2024 Nuclear Energy Institute 3 Industry needs clarification of NRC expectations for EQ with RG 1.183 Rev. 1 and SAND2023-01313 Regulatory Issue Summary (RIS) may be the most viable option Consistent with previous approach to clarify Staff positions on AST topics
RIS 06-04, Experience With Implementation of Alternative Source Terms Shorter timeframe than following GSI approach Supported by industry study Proposed Approach
©2024 Nuclear Energy Institute 4 NEI to provide a white paper Supporting continued use of TID-14844 source term for EQ Documenting the evaluations provided in Workshop #2 Plan to submit in April 2024 Addresses 2 questions from Workshop #2
Impact of Exposure and Enrichment on Ci/MW
Isotope Selection for Environmental Qualification Analyses Industry Study
©2024 Nuclear Energy Institute 5 Questions/Comments/Discussions