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:
ties 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 onsite power sources should be implemented to maintain onsite emergency source reliability at an acceptable level. The program designed to attain and maintain the long-term reliability of each source at or above specified reliability targets is reviewed to verify its adequacy. 9. Other Review Areas The ac power system is reviewed to determine that: A. The system and its components have the appropriate seismic design classification. 8.3.1-4 Revision 3 - March 2007 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 (including lightning discharges), and postulated accidents. D. The system and its components have a "Class 1E" quality assurance classification. E. Variations in voltage, frequency and waveform (harmonic distortion) in the onsite power system and its components during any mode of plant operation do not degrade the performance of any safety system load below an acceptable level. 10. Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC). For design certification (DC) and combined license (COL) reviews, the staff reviews the applicant's proposed ITAAC associated with the structures, systems, and components (SSCs) related to this SRP section in accordance with SRP Section 14.3, "Inspections, Tests, Analyses, and Acceptance Criteria." The staff recognizes that the review of ITAAC cannot be completed until after the rest of this portion of the application has been reviewed against acceptance criteria contained in this SRP section. Furthermore, the staff reviews the ITAAC to ensure that all SSCs in this area of review are identified and addressed as appropriate in