Document: NUREG-0800
Document ID: 81256f55-72dd-4777-9472-f373c71c4554
Document Type: srp
Title: AC POWER SYSTEMS (ONSITE)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550065.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
G), a battery, a steam-driven pump, or an AAC power source). III. REVIEW PROCEDURES The primary objective in the review of the ac power system is to determine that this system satisfies the acceptance criteria stated in subsection II and will perform its design functions during plant normal operation, anticipated operational occurrences, accident conditions, and post-accident conditions. To ensure that acceptance criteria stated in subsection II are satisfied, the review is performed as detailed below. The primary reviewer will coordinate this review with the other branch areas of review as stated in subsection I. The primary reviewer obtains and uses such input as necessary to ensure that this review procedure is complete. The reviewer will select material from the procedures described below, as may be appropriate for a particular case. These review procedures are based on the identified SRP acceptance criteria. For deviations from these acceptance criteria, the staff should review the applicant’s evaluation of how the proposed alternatives provide an acceptable method of complying with the relevant NRC requirements identified in Subsection II. 8.3.1-20 Revision 3 - March 2007 1. System Redundancy Requirements GDCs 33, 34, 35, 38, 41, and 44 set forth requirements with regard to the safety systems that must be supplied by the onsite ac power system. Also, these criteria state that safety system redundancy should be such that, for onsite power system operation (assuming offsite power is not available), the system safety function can be accomplished assuming a single failure. The acceptability of the onsite power system with regard to redundancy is based on conformance to the same degree of redundancy of safety-related components and systems required by these GDCs. As endorsed by Regulatory Guide 1.153, IEEE Std 603 provides criteria used to evaluate all aspects of the electrical portions of safety-related systems and the onsite power system, including criteria