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:
ceptable and meets the requirements of GDCs 2, 4, 5, 17, 18, and 50. This conclusion is based on the following: 1. The applicant has met the requirements of GDC 2, "Design Basis for Protection Against Natural Phenomena," with respect to SSCs of the ac power systems being capable of withstanding the effects of natural phenomena such as earthquakes, tornadoes, hurricanes, and floods by locating the ac power system and components in seismic Category I structures which provide protection from the effects of tornadoes, tornado missiles, and floods. In addition, the ac power system and components have a quality assurance designation of Class 1E. 2. The applicant has met the requirements of GDC 4, "Environmental and Dynamic Effects Design Bases," with respect to SSCs of the ac power system being designed to accommodate the effects of and to be compatible with the environmental conditions associated with normal operation, maintenance, testing, and postulated accidents, and being appropriately protected against dynamic effects, including the effects of missiles, that may result from equipment failures, by having an adequate plant design and an adequate equipment qualification program. 3. The applicant has met the requirements of GDC 5, "Sharing of structures, systems, and components," with respect to SSCs of the onsite ac power system. The onsite ac power system and components associated with the multi-unit facility are housed in physically separate seismic Category I structures, are not shared between units, and the applicant has met the positions of RG 1.32, Position C.2.a, and RG 1.81, Positions C.2 and C.3. 8.3.1-35 Revision 4 - May 2010 4. The applicant has met the requirements of GDC 17, "Electric Power Systems," with respect to the onsite Class 1E ac power system's: (a) capacity and capability to permit functioning of SSCs important to safety; (b) independence and redundancy to perform its safety function assuming a single failure; and (c) provisions to minimize the