Document: NRC Regulatory Guide
Document ID: 503ea0ef-6ca4-4230-99f2-c94521f9e62a
Document Type: regulatory_guide
Title: Qualification Tests of Electric Cables, Field Splices, and Connections for Light-Water-Cooled Nuclear Power Plants
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740128.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.131
CFR Part: 
CFR Title: 

Content:
provide a test primarily of the self-extinguishing tendency of the cable insulation material. These tests are conducted with cables in a specific configuration and subjected to a defined fire source. However, the fire resistance of cables may vary significantly under different environmental conditions, cable configura tions, and fire sources. It should be recognized that the objective of the flame test is to provide guidance for the selection of fire-resistant cables rather than to establish the adequacy of the installation of cables in a nuclear power plant. Adequacy of cables as instal led depends on many factors. Morever, the adequacy of the cable system as installed depends on other fac tors in addition to the properties of the cables. For example, cable separation criteria are delineated in Regulatory Guide 1.75, "Physical Independence of Electric Systems," and fire protection guidelines are delineated in Regulatory Guide 1.120, "Fire Protec tion Guidelines for Nuclear Power Plants." IEEE Std 383-1974 is concerned with cables both inside and outside the containment and establishes procedures for simulating operating conditions so that type testing will be adequate for the intended ser vice conditions. It covers normal operating and design basis event conditions, except that the fire test is a reference configuration and flame rather than the design basis configuration and flame. C. REGULATORY POSITION Conformance with the requirements of IEEE Std 383-1974, "IEEE Standard for Type Test of Class IE Electric Cables, Field Splices, and Connections for Nuclear Power Generating Stations," is acceptable for qualifying electric cables, field splices, and con nections as components (Fite test provisions do not apply to qualification for an installed configuration) for service in light-water-cooled nuclear power plants to ensure that the cables, field splices, and connec tions can perform their safety-related function sub ject to the following: 1. In lieu of Section