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:
capacity and capability from the transmission network must be provided to power the safety-related systems and all other auxiliary systems under normal, abnormal, and accident conditions. The offsite power source should be designed to minimize to the extent practical the likelihood of its failure under normal, abnormal, and accident conditions. 5. GDC 18 is satisfied as it relates to the inspection and testing of the offsite electric power system. 6. GDCs 33, 34, 35, 38, 41, and 44 are satisfied as they relate to the operation of the offsite electric power system, encompassed in GDC 17, to ensure that the safety functions of the systems described in GDC’s 33, 34, 35, 38, 41, and 44 are accomplished, assuming a single failure where applicable. 7. 10 CFR 50.63 is satisfied as it relates to an AAC power source (as defined in 10 CFR 50.2) provided for safe shutdown in the event of a station blackout (non-DBA), and the guidelines of Regulatory Guide 1.155 are followed as they relate to the adequacy of the AAC source and the independence of the AAC power source from the offsite power system and onsite power system and sources. Except for passive reactor designs described in subsection II(2) above, new applications must provide an adequate AAC source of diverse design (with respect to ac onsite emergency sources) that is consistent with the guidance in Regulatory Guide 1.155 and capable of powering at least one complete set of normal safe shutdown loads. These issues are reviewed in detail in SRP Section 8.4. 8. 10 CFR 50.65, Section 50.65(a)(4), as it relates to the requirements to assess and manage the increase in risk that may result from proposed maintenance activities before performing the maintenance activities. Acceptance is based on meeting the following specific guidelines: A. Regulatory Guide 1.160, as related to the effectiveness of maintenance activities for onsite emergency ac power sources including grid-risk-sensitive maintenance activities (i.e.,