Document: NRC Regulatory Guide
Document ID: 26c46b12-8efc-4f68-aa71-d774ec0adb70
Document Type: regulatory_guide
Title: Manual Initiation of Protective Actions + HISTORY - HISTORY 10/2017 – Periodic Review of Revision 1 – Issues identified for future consideration 01/2016 – Periodic Review on Revision 1 – Revise 12/2008 – DG-1190 , Proposed Revision 1 (Rev. 5)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1728/ML17285B150.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.62
CFR Part: 
CFR Title: 

Content:
Regulatory Guide Periodic Review Enclosure Regulatory Guide Number: 1.62 Revision number: 1 Title: Manual Initiation of Protective Actions Office/division/branch: RES/DE/ICEEB Technical Lead: Erick Martinez Rodriguez Staff Action Decided: 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)? RG 1.62 provides guidance on Institute of Electrical and Electronics Engineers (IEEE) Standard (Std.) 603-1991, “IEEE Standard Criteria for Safety Systems for Nuclear Power Generating Stations,” which is incorporated by reference in Title 10 of the Code of Federal Regulations (10 CFR) Part 50.55a (h), “Protection and Safety Systems,” and is applicable to 10 CFR 50, Appendix A, General Design Criteria (GDC) 1, 13, 21, and 22. RG 1.62 describes a method for complying with the Nuclear Regulatory Commission’s (NRC) regulations for manual initiation of protective actions to complete all credited protective actions for the safety system. The staff identified one administrative issue that should be incorporated in the next revision to RG 1.62. Specifically, RG 1.62 includes a reference to Branch Technical Position (BTP) 7-19, “Guidance for Evaluation of Diversity and Defense-In-Depth in Digital Computer-Based Instrumentation and Control Systems,” Revision 5. However, BTP 7-19 was updated to Revision 7 in 2016. RG 1.62 covers some of the topics addressed in BTP 7-19. During the next revision of RG 1.62, the staff recommends ensuring alignment of the wording that is common between the guidance provided in RG 1.62 and BTP 7-19. There are no additional technical or regulatory issues requiring revision of RG 1.62. 2. What is the impact on internal and external stakeholders of not updating the RG for the known issues, in terms of anticipated numbers of licensing and inspection activities over the next several years? The staff finds RG 1.62 has no known technical