Document: NRC Regulatory Guide
Document ID: b4874b3a-bbf8-4eb6-8b86-db32ecf45ac6
Document Type: regulatory_guide
Title: Guidance for Implementation of 10 CFR 50.59, Changes, Tests, and Experiments (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1904/ML19045A435.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.187
CFR Part: 
CFR Title: 

Content:
EI 96-07, Appendix B, provides guidance for licensees of independent spent fuel storage installations (ISFSIs) or spent fuel storage system design certificate holders in conducting changes, tests, and experiments to their facilities. o NEI 96-07, Appendix C, Revision 0 – Corrected, “Guideline for Implementation of Change Control Processes for New Nuclear Power Plants Licensed under 10 CFR Part 52,” dated March 2014 (Ref. 8). The NRC Letter to NEI Russell J. Bell, “Acceptance for Endorsement of Nuclear Energy Institute 96-07, Appendix C, Revision 0 – Corrected: Guideline for Implementation of Change Control Processes for New Nuclear Power Plants Licensed Under 10 CFR Part 52,” dated July 2, 2014 (Ref. 9), states that NRC finds NEI 96-07, Appendix C, “acceptable for use by licensees during formal NRC endorsement via the NRC’s regulatory guide process.” o NEI 96-07, Appendix D, “Supplemental Guidance for Application of 10 CFR 50.59 to Digital Modifications,” November 2018 (Ref. 10). Appendix D provides focused application of the 10 CFR 50.59 guidance to activities involving digital instrumentation and control (I&C) DG-1356, Page 3 modifications, and is endorsed in this guidance, RG 1.187 Rev. 2, with exceptions and clarifications set forth below. o NEI 96-07, Appendix E, “User’s Guide for NEI 96-07, Revision 1, ‘Guidelines for 10 CFR 50.59 Implementation,’” October 2011 (Ref. 11). Appendix E was issued by NEI without request for NRC endorsement and provides focused guidance for specific 10 CFR 50.59 related topics that are commonly encountered. It is not publicly available in the NRC document control system. Purpose of Regulatory Guides The NRC issues RGs to describe to the public methods that the staff considers acceptable for use in implementing specific parts of the agency’s regulations, to explain techniques that the staff uses in evaluating specific problems or postulated events, and to provide guidance to applicants. Regulatory