Document: NUREG-0800
Document ID: a2680f96-0e15-402d-89ab-688ff09806a8
Document Type: srp
Title: with respect to the specified station blackout event/duration.13
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070497.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.2
CFR Part: 
CFR Title: 

Content:
gulatory Guide 1.32, "Criteria for Safety-Related Electric Power Systems for Nuclear 104 Power Plants." 15. Regulatory Guide 1.155, "Station Blackout."105 616. Branch Technical Position ICSB-11 (PSB), "Stability of Offsite Power Systems." 106 717. Standard Review Plan Section 8.1, Table 8-1, "Acceptance Criteria for Electric Power." 107 818. Standard Review Section 8.1, Appendix 8-B, "General Agenda, Station Site Visits." 108 919. Appendix A to SRP Section 8.2, "Guidelines for Generator Circuit Breakers/Load Break 109 Switches." 20. Appendix B to SRP Section 8.2, "Guidelines for Review of Alternate AC Sources for Station Blackout at Nuclear Power Plants.”110 521. IEEE Standard 308-1974, "IEEE Standard Criteria for Class 1E Power Systems for 111 112 Nuclear Power Generating Stations." 22. EPRI ALWR Utility Requirements Document, Volume II, "Evolutionary Plants," Chapter 11, "Electric Power Systems," Revision 6, December 1993, Electric Power Research Institute.113 DRAFT Rev. 4 - April 1996 8.2-18 APPENDIX A to SRP Section 8.2 GUIDELINES FOR GENERATOR CIRCUIT BREAKERS/LOAD BREAK SWITCHES A. Background Generator circuit breakers have been used in recent nuclear generating station designs (McGuire, Catawba) as a means of providing immediate access of the onsite ac power systems to the offsite circuits by isolating the unit generator from the main step-up and unit auxiliary transformers and allowing backfeeding of power through these circuits to the onsite ac power system. Generator load break switches can be used as a means of providing access to the offsite circuits as described above, but only on a delayed basis. Since this is a new design feature, the staff made the use of generator circuit breakers and load break switches a generic item no. B-53. In the case of McGuire and Catawba, References 1, 2, and 3, an expert consultant was retained to evaluate the generator circuit breaker verification testing program and its results. These guidelines are formalization of