Document: NRC Regulatory Guide
Document ID: d940ffea-1d07-4cc8-b0f2-64d5495912d7
Document Type: regulatory_guide
Title: Criteria for Power Systems for Nuclear Power Plants + HISTORY - HISTORY DG-1420 , Proposed Revision 4, published 08/2024 DG-1079 , Proposed Revision 3, published 04/2003 (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2415/ML24158A060.pdf
Revision Date: 2024-08
Chapter: 
Section ID: RG-1.32
CFR Part: 
CFR Title: 

Content:
te AC buses and related loads not under test should be monitored to verify absence of voltage at these buses and loads. DG-1420, Page 8 D. IMPLEMENTATION The NRC staff may use this regulatory guide as a reference in its regulatory processes, such as licensing, inspection, or enforcement. However, the NRC staff does not intend to use the guidance in this regulatory guide to support NRC staff actions in a manner that would constitute backfitting as that term is defined in 10 CFR 50.109, “Backfitting,” and as described in NRC Management Directive 8.4, “Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests,” (Ref. 31), nor does the NRC staff intend to use the guidance to affect the issue finality of an approval under 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants.” The staff also does not intend to use the guidance to support NRC staff actions in a manner that constitutes forward fitting as that term is defined and described in Management Directive 8.4. If a licensee believes that the NRC is using this regulatory guide in a manner inconsistent with the discussion in this Implementation section, then the licensee may file a backfitting or forward fitting appeal with the NRC in accordance with the process in Management Directive 8.4. DG-1420, Page 9 REFERENCES 2 These references indicate the versions of the documents available at the time of issuance of this regulatory guide (RG). Licensees or applicants using this RG should check all referenced documents to verify that no change has occurred since the issuance of the RG. 1. Institute of Electrical and Electronics Engineers (IEEE) Standard (Std.) 308-2020, “IEEE Standard Criteria for Class 1E Power Systems for Nuclear Power Generating Stations,” Piscataway, New Jersey, March 2020.3 2. U.S. Code of Federal Regulations (CFR), “Domestic Licensing of Production and Utilization Facilities,” Part 50, Chapter I, Title 10, “Energy.” 3. CFR,