Document: NUREG-0800
Document ID: 97120913-d26f-4324-ab62-22f3f5b73925
Document Type: srp
Title: and 8.3.2.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600410.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
t water intrusion are reviewed. Cables from independent power sources or different safety divisions could be affected by the same condition. Underground or inaccessible power cables connecting offsite power to safety buses or power and control cables to equipment with accident mitigating functions should be considered in the review. Examples of submerged cable failures from the operating experience are provided in Reference 26. 2. To ensure that the requirements of GDC 18 are satisfied, the detailed description of the design should be examined to determine that the design includes provisions for testing the transfer of the source of power feeding the onsite distribution system, e.g., from the main generator supply to the preferred power system, or to any other supply. It should also be established that the circuitry required to perform these transfer functions has the capability of being tested during plant operation. The organization responsible for quality assurance and maintenance should review preoperational and initial startup test procedures. The organization responsible for quality assurance and maintenance should also review the periodic test procedures. Regulatory Guide 1.204 provides acceptable guidelines for an adequate and acceptable testing and maintenance approach for the reviewer to confirm the proper installation of a lightning protection system and ensure its continued ability to provide the level of protection for which it was designed. The reviewer should verify that new lightning protection systems (LPSs) are inspected following installation, and reinspected at least on a regular, periodic throughout their lifetime. In particular, an LPS should be inspected whenever any alterations or repairs are made to a protected structure, as well as following any known lightning transient to the system. An LPS should be visually inspected at least annually. In areas where severe climatic changes occur, it is advisable to inspect the LPS semiannually or