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:
5 and capable of powering at least one complete set of normal safe shutdown loads. These issues are reviewed in detail under SRP Section 8.4. 9. 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. RG 1.160, as it relates to the effectiveness of maintenance activities for onsite emergency ac power sources including grid-risk-sensitive maintenance activities (i.e., activities that tend to increase the likelihood of a plant trip, increase loss of offsite power (LOOP) frequency, or reduce the capability to cope with a LOOP or SBO). B. RG 1.182, as it relates to implementing the provisions of 10 CFR 50.65 (a)(4) by endorsing Section 11 to NUMARC 93-01, ANuclear Energy Institute Industry Guideline for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants, February 22, 2000. 8.3.1-13 Revision 4 - May 2010 10. 10 CFR 50.55a(h) as it relates to protection systems for plants with construction permits (CPs) issued after January 1, 1971, but before May 13, 1999, which must meet the requirements stated in either IEEE Std. 279, "Criteria for Protection Systems for Nuclear Power Generating Stations," or IEEE Std. 603-1991, "Criteria for Safety Systems for Nuclear Power Generating Stations,@ and the correction sheet dated January 30, 1995. For nuclear power plants with CPs issued before January 1, 1971, protection systems must be consistent with their licensing basis or may meet the requirements of IEEE Std. 279-1971. Nuclear power plants with applications filed on or after May 13, 1999 for preliminary and final design approvals (10 CFR Part 52, Appendix O), DC, CPs, operating licenses (OLs), and COLs that do not reference a final design approval or DC, must meet the requirements for safety systems in IEEE Std. 603-1991 and the correction sheet