Document: NUREG-0800
Document ID: 9cfc38bf-7808-446e-a43d-4ca9ff55df2a
Document Type: srp
Title: AC POWER SYSTEMS (ONSITE)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1007/ML100740289.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
atings for the diesel generators, acceptance criteria with regard to the number of successful diesel generator tests and allowable failures 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. [For new plants, sharing of diesel generators between units is not recommended.] 5. Identification of Cables, Raceways, and Terminal Equipment The basis proposed for identifying the onsite ac power system components including cables, raceways, and terminal equipment as safety-related equipment in the plant is reviewed. Also, the identification scheme used to distinguish between redundant Class 1E systems, associated circuits assigned to redundant Class 1E divisions, non-Class 1E systems and their associated cables, raceways, and terminal equipment of the power system is reviewed. 6. Auxiliary Supporting Systems/Features The instrumentation, control circuits, and power connections of auxiliary supporting systems and features are reviewed to determine that they are designed to the same criteria as those for the safety-related loads and power systems that they support. This will include an examination of the auxiliary 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. Reliability Program for Emergency Onsite AC Power Sources A reliability program for emergency