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:
ich licensees, under certain conditions, may make changes to their facilities and procedures as described in the final safety analysis report (FSAR) (as updated) (also referred to as the updated final safety analysis report (UFSAR)), and conduct tests or experiments not described in the FSAR (as updated), without prior NRC approval. Applicability This RG applies to each holder of an operating license issued under Title 10 of the Code of Federal Regulations (10 CFR) Part 50, “Domestic Licensing of Production and Utilization Facilities” (Ref. 1), or a combined license issued under 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants” (Ref. 2), including the holder of a license authorizing operation of a nuclear power reactor that has submitted the certification of permanent cessation of operations required under 10 CFR 50.82(a)(1) or 10 CFR 50.110 or a reactor licensee whose license has been amended to allow possession of nuclear fuel but not operation of the facility. Applicable Regulations • 10 CFR Part 50, “Domestic Licensing of Production and Utilization Facilities,” provides regulations for licensing production and utilization facilities. o 10 CFR 50.59, “Changes, Tests, and Experiments,” contains requirements for the process by which licensees, under certain conditions, may make changes to their facilities and procedures as described in the FSAR (as updated), and conduct tests or experiments not DG-1356, Page 2 described in the FSAR (as updated), without obtaining a license amendment pursuant to 10 CFR 50.90. o 10 CFR 50.90, “Application for amendment of license, construction permit, or early site permit,” contains the requirements for applicants requesting an amendment to a license or permit under 10 CFR Part 50 or 10 CFR Part 52. • 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants,” in the Appendices containing certified designs, Section VIII.B, “Processes for Changes