Document: NUREG-0800
Document ID: 97120913-d26f-4324-ab62-22f3f5b73925
Document Type: srp
Title: and 8.3.2.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600410.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
lso arranged such that single events (e.g., a spurious relay trip or a breaker not operating during fault conditions) will not cause simultaneous failure of all offsite circuits to the switchyard. The results of the applicant's grid stability analysis indicated that loss of the largest generating capacity being supplied to the grid, loss of largest load from the grid, loss of the most critical transmission line, or loss of the unit itself will not cause grid instability. 8.2-25 Revision 4 - March 2007 This meets the guidelines of Regulatory Guide 1.32, "Criteria for Safety-Related Electric Power Systems for Nuclear Power Plants." 5. The applicant has met the requirements of GDC 18, "Inspection and Testing of Electric Power Systems," with respect to the capability to test systems and associated components during normal plant operation and the capability to test the transfer of power from the nuclear power unit, the offsite preferred power system, and the onsite power system. 6. The applicant’s overall compliance with the requirements of 10 CFR 50.63 is discussed in Section 8.4 of the safety evaluation report (SER). The applicant has met the requirement of 10 CFR 50.63, "Loss of All Alternating Current Power," with respect to the adequacy of the AAC power source provided for safe shutdown (non-DBA) in the event of a station blackout and the independence of the AAC source from offsite power systems and onsite power sources. In compliance with the relevant guidance of Regulatory Guide 1.155, the offsite AAC power source is located at or near the plant, has sufficient capacity, capability, and reliability to achieve and maintain safe shutdown (non-DBA), and is adequately independent from onsite safety-related and preferred power systems, and thus satisfies the definition for an acceptable AAC source as specified in 10 CFR 50.2. 7. The applicant has met the requirements of 10 CFR 50.65(a)(4) with respect to the onsite dc power system. The acceptability is based on