Document: NRC Regulatory Guide
Document ID: 038ef757-4de1-42af-8663-ffdbf7789d63
Document Type: regulatory_guide
Title: Standard Format and Content of Safety Analysis Reports for Nuclear Power Plants (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2523/ML25234A141.pdf
Revision Date: 2026-02
Chapter: 
Section ID: RG-1.70
CFR Part: 
CFR Title: 

Content:
Regulatory Guide Periodic Review Regulatory Guide Number: 1.70, Revision 3 Title: Standard Format and Content of Safety Analysis Reports for Nuclear Power Plants (LWR Edition) Office/Division/Branch: NRR/DNRL/NLIB Technical Lead: Emmanuel Sayoc Recommended Staff Action: Reviewed with issues identified for future consideration 1. What are the known technical or regulatory issues with the current version of the Regulatory Guide (RG)? Regulatory Guide (RG) 1.70, “Standard Format and Content of Safety Analysis Reports for Nuclear Power Plants (LWR1 Edition),” was initially published February 1972 and revised for the second time on November 1978 (Revision 3). The staff conducted its most recent periodic review of RG 1.70 on September 29, 2014, and recommended withdrawal of the RG after the guidance information for obtaining a Title 10 of the Code of Federal Regulation (10 CFR) Part 50 construction permit and an operating license has been incorporated into RG 1.206, “Combined License Applications for Nuclear Power Plants (LWR Edition),” Revision 1. RG 1.70, to date, has not been withdrawn. RG 1.70 pertains to licensing processes under Part 50 and provides detailed guidance in preparing applications for construction permits and operating licenses for new nuclear power plants. Since that time, the Commission established a new combined (construction and operating) licensing process under 10 CFR Part 52; in addition, rulemaking is currently in progress for new licensing process under 10 CFR Part 53. Since the last review of RG 1.70, there have been several updates proposed not only for RG 1.70, but also for RG 1.206 as well as sections of NUREG-0800, “Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition,” in support of new reactor licensing. As such, RG 1.70 is no longer being exclusively used by applicants for licensing new reactors. RG 1.206, Revision 1, was developed to provide guidance to applicants who planned