2026-11694: Regulatory Guide: Guidance for Technology-Inclusive Risk-Informed Change Evaluation
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The U.S. Nuclear Regulatory Commission (NRC) is issuing new Regulatory Guide (RG) 1.261, "Guidance for Technology-Inclusive Risk- Informed Change Evaluation." This RG describes an approach that the NRC staff finds acceptable for using a technology-inclusive risk- informed change evaluation process for changes to a facility described in final safety analysis reports (as updated). Subject to the clarifications in Section C of the RG, this RG endorses the methodology described in Nuclear Energy Institute (NEI) 22-05, Revision 0, "Technology Inclusive Risk Informed Change Evaluation (TIRICE), Guidance for the Evaluation of Changes to Facilities Utilizing NEI 18- 04 and NEI 21-07," issued January 2024.
The agency’s own summary, as published.
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