Document: NUREG-0800
Document ID: 98a045ec-37ef-46fc-9eaa-9e695c2d6e53
Document Type: srp
Title: OFFSITE POWER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350488.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.2
CFR Part: 
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be used by evaluation of conformance with Commission regulations. Implementation schedules for conformance to parts of the herein are contained in the referenced regulatory guide, ion 0 to Appendix A of this SRP section. acceptable of the Commission's the staff in its method discussed NUREG, and Revis- I VI. REFERENCES 1. 10 CFR Part 50, Appendix A, General Design Criterion 5, "Sharing of Structures, Systems, and Components." 2. 10 CFR Part 50, Appendix A, General Design Criterion 17, "Electric Power Systems." 3. 10 CFR Part 50, Appendix A, General Design Criterion 18, "Inspection and Testing of Electric Power Systems." 4. Regulatory Guide 1.32, "Criteria for Safety-Related Electric Power Systems for Nuclear Power Plants." 5. IEEE Standard 308-1974, "IEEE Standard Criteria for Class 1E Power Systems for Nuclear Power Generating Stations." 6. Branch Technical Position ICSB-11 (PSB), "Stability of Offsite Power Systems." 7. Standard Review Plan Section 8.1, Table 8-1, "Acceptance Criteria for Electric Power." 8. Standard Review Section 8.1, Appendix 8-B, Visits." 9. Appendix A to SRP Section 8.2, "Guidelines Load Break Switches." "General Agenda, Station Site for Generator Circuit Breakers/ 8.2-10 Rev. 3 - July 1983 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.