Document: NRC Regulatory Guide
Document ID: 46415f7b-f0cb-4f1a-a80d-931f02bb480a
Document Type: regulatory_guide
Title: 07/2011 (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1117/ML111730464.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.156
CFR Part: 
CFR Title: 

Content:
isplays a currently valid OMB control number. This regulatory guide is a rule as designated in the Congressional Review Act (5 U.S.C. 801-808). However, the NRC has determined this regulatory guide is not a major rule as designated by the Congressional Review Act. Rev. 1 of RG 1.156, Page 2 B. DISCUSSION Institute of Electrical and Electronics Engineers (IEEE) Standard (Std.) 572-2006, “Qualification of Class 1E Connection Assemblies for Nuclear Power Generating Stations,” issued June 2007 (Ref. 2), was prepared by Subcommittee 2 (Qualification) of the IEEE Nuclear Power Engineering Committee and was approved by the IEEE Standards Board on December 6, 2006. This standard describes basic procedures for qualifying connection assemblies (e.g., connectors, terminations, and environmental seals in combination with related cables or wires as assemblies). The qualification requirements in this standard, when followed, demonstrate and document the ability of the equipment to perform safety functions under applicable service conditions, including design-basis events. Regulatory Guide 1.100, “Seismic Qualification of Electrical and Active Mechanical Equipment and Functional Qualification of Active Mechanical Equipment for Nuclear Power Plants” (Ref. 3), provides guidance on the seismic qualification of this equipment. The regulations in 10 CFR 50.49 define three categories of electric equipment that must be environmentally qualified: (1) safety-related equipment, (2) nonsafety-related equipment if its failure could adversely affect safety-related equipment, and (3) certain postaccident monitoring equipment. This regulatory guide provides an acceptable method of qualifying connectors, terminations, and environmental seals in combination with cables or wires as assemblies for all three categories of equipment. Other Codes and Standards This regulatory guide endorses the use of one or more voluntary consensus codes or standards developed by external organizations. These