Document: NUREG-0800
Document ID: d9e9d0a9-6390-4154-94dc-7d5e6d8145cd
Document Type: srp
Title: A-C POWER SYSTEMS (ONSITE)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350489.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
res to demonstrate acceptability, and starting and load shedding circuits. In addition, where the proposed design provides for the connection of non-safety loads to the diesel generators or sharing of diesel generators between nuclear units at the same site, particular review emphasis is given to the possibility of marginal capacity and degradation of reliability that may result from such design provisions. 8.3.1-2 Rev. 2 - July 1981 5. Identification The means proposed for identifying the a-c onsite power system | components including cables, raceways', and terminal equipment as safety-related equipment in the plant are reviewed. Also, the identification scheme used to distinguish between redundant cables, raceways, and terminal equipment.of the power system is reviewed. 6. Vital Supporting Systems The instrumentation, control circuits, and power connections of vital supporting systems are reviewed to determine that they are designed to the same criteria as those for the safety-related loads I and power systems that they support. This will include an examina- tion of the vital supporting system component redundancy; power feed assignment to instrumentation, controls, and loads; initiating circuits; load characteristics; equipment identification scheme, and design criteria and bases for the installation of redundant cables. 7. System Testing and Surveillance Onsite testing capabilities are reviewed. The means proposed for automatically monitoring the status of system operability are reviewed. 8. Other Review Areas The a-c power system is reviewed to.determine that: a. The system'and its components have the appropriate seismic design classification. b. The system and its components are housed in a structure with seismic category I classification. c. The system and its components are designed to withstand environmental conditions associated with normal operation, natural phenomena, and postulated accidents. d. The system and its components have a "Class EI' quality