Document: NUREG-0800
Document ID: 72cf12c3-a823-4385-bbf4-92e2b543a906
Document Type: srp
Title: AC POWER SYSTEMS (ONSITE)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070498.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
wer system, and the guidelines of Regulatory Guide 1.63 (see also IEEE Stds 242, 317, and 741), as related to the capability of electric penetration assemblies in containment structures to withstand a loss of coolant accident without loss of mechanical integrity and the external circuit DRAFT Rev. 3 - April 1996 8.3.1-10 protection for such penetrations the capability of the electric penetration assemblies to withstand, without loss of mechanical integrity, the maximum possible fault current versus time condition that could occur given single random failure of circuit overload protective devices located in circuits of the onsite ac power systems.70 8. 10 CFR 50.63, as related to use of the redundancy and reliability of diesel generator units as a factor in limiting the potential for station blackout events. Acceptance is based on meeting the following specific guidelines:71 a. Regulatory Guide 1.9, as related to the adequacy of the diesel generator reliability program provided to attain and maintain the target reliability levels of diesel generator units.72 b. Regulatory Guide 1.155, as related to use of the reliability of emergency onsite ac power sources as a factor in determining the coping duration for station blackout and the establishment of a program for attaining and maintaining source target reliability levels.73 Branch technical positions and industry standards that provide information, recommendations, and guidance and in general describe a basis acceptable to the staff that may be used to implement the requirements of General Design Criteria 2, 4, 5, 17, 18, and 50 are identified in SRP Section 8.1, Table 8.1, and in Appendix 8-A. In addition, 10 CFR 50.34(f)(2)(v), (xiii), and (xx) related to Task Action Plan items I.D.3, II.E.3.1 and II.G.1 of NUREG-0718 and NUREG-0737 and NUREG-0718 are also implemented to meet these regulations. 74 Technical Rationale75 The technical rationale for application of these acceptance criteria to reviewing onsite ac power