Document: NUREG-0800
Document ID: e05b4c31-68a5-4ccc-ae3f-566b2a256f03
Document Type: srp
Title: OFFSITE POWER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600410.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.2
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - The Organization Responsible for Electrical Engineering Review Secondary - None I. AREAS OF REVIEW The descriptive information, analyses, and referenced documents, including electrical single-line diagrams, electrical schematics, logic diagrams, tables, and physical arrangement drawings for the offsite power systems, presented in the applicant's safety analysis report (SAR), are reviewed. The objective of the review is to determine that this system satisfies the requirements of 10 CFR Part 50, Appendix A, General Design Criteria (GDCs) 2, 4, 5, 17, and 18, and will perform its design functions during all plant operating and accident conditions. The offsite power system is referred to in industry standards and regulatory guides as the "preferred power system.” The interface of the preferred power supply with an alternate ac (AAC) power source for safe shutdown in the event of a station blackout (non-DBA) is also reviewed with respect to its adequacy and independence from the offsite and onsite power systems. The AAC source, may be a combustion turbine generator, a diesel generator, or other diverse power source. The design, operation, and performance of the alternate ac power source are reviewed in SRP Section 8.4. 8.2-2 Revision 4 - March 2007 It includes two or more physically independent circuits capable of operating independently of the onsite standby power sources and encompasses the grid, transmission lines (overhead or underground), transmission line towers, transformers, switchyard components and control systems, switchyard battery systems, the main generator, generator circuit breakers or load break switches (if provided), disconnect switches, and other switchyard equipment, such as capacitor banks and volt amperes reactive (VAR) compensators, provided to supply electric power to safety-related and other equipment. The specific areas of review are as follows: 1. The preferred power system arrangement is reviewed to