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:
n the qualified life of the cable has been reached, representative cables should be replaced with new cables and the removed cables subjected to a qualification test similar to that performed prior to installation. This test should include additional accelerated aging. Successful com pletion of this test extends the qualified life of the installed cables. This procedure should be repeated until the qualified life equals or ex ceeds the required design life. (b) Additional identical cables should be installed in a nuclear power generating station location where power loading and service conditions equal or exceed those of the cable to be qualified. A cable should be removed after a planned period less than the previously qualified life and subjected to a qualification test similar to that performed prior to installation. This test should include ac celerated aging. Successful completion of this test extends the qualified life of the installed cable. Sufficient additional identical cables should be initially installed in order that the above procedure can be repeated until the qualified life 'equals or exceeds the required design life. "If the above methods demonstrate that the qualified life is less than the design life, a periodic replacement plan should be in stituted." 5. The radiological source term and exposure rate simulating LOCA conditions referred to in Section 2.4.2, "Radiation Exposure-Total," should be ob tained from Regulatory Guide 1.89 rather than from IEEE Std 323-1974. 6. In lieu of Section 2.5.1, "General," the follow ing should be used: "This section describes the method for type testing of grouped cables via the vertical tray flame test to determine their relative self extinguishing tendencies. Testing shall include both aged and unaged cable specimens." 7. In lieu of Section 2.5.2.2, the following should be used: "The fire test provisions of the standard are useful in screening out cable insulation materials that are inadequately self