Federal Register #NRC-2025-0148

NRC Issues Regulatory Guide for Technology-Inclusive Risk-Informed Change Evaluation

This notice announces the release of Regulatory Guide (RG) 1.261 by the U.S. Nuclear Regulatory Commission (NRC), providing guidance for technology-inclusive, risk-informed change evaluation at nuclear facilities. - Government Buyer: - U.S. Nuclear Regulatory Commission (NRC) - Purpose and Scope: - Issuance of RG 1.261, "Guidance for Technology-Inclusive Risk-Informed Change Evaluation" - Guide is intended for facilities licensed using probabilistic risk assessments - Endorses methodology from Nuclear Energy Institute (NEI) 22-05, Revision 0 - Addresses evaluation of facility changes using a technology-inclusive, risk-informed process - Applies to situations where departures from certain regulations (e.g., 10 CFR 50.59) may be warranted - OEMs and Vendors: - No OEMs or vendors are requested or mentioned - Products/Services Requested: - No products or services are being procured - Unique or Notable Requirements: - Notice is informational only; not a procurement or award opportunity - Focuses on regulatory guidance for nuclear facility operators

Description

The U.S. Nuclear Regulatory Commission (NRC) is issuing new Regulatory Guide (RG) 1.261, which describes an approach acceptable for using a technology-inclusive risk-informed change evaluation process for changes to a facility described in final safety analysis reports. This guide endorses the methodology described in Nuclear Energy Institute (NEI) 22-05, Revision 0, issued January 2024. The guide addresses regulatory frameworks for plants licensed using probabilistic risk assessments and provides guidance on departures from some regulations such as 10 CFR 50.59. The guide is available as of June 11, 2026.

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