Document: NUREG-0800
Document ID: 2ff4b7bf-0033-46ea-abe0-313b6bff2ac6
Document Type: srp
Title: SEISMIC CLASSIFICATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0631/ML063190002.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2.1
CFR Part: 
CFR Title: 

Content:
d reduce the functioning of any Seismic Category I feature to an unacceptable safety level or injure control room personnel, are identified for analysis to assure the SSE will not cause such failures. The staff concludes that the SSCs important to safety that are within the scope of this review have been properly classified, are within the scope of the applicant's QA Program, and thus meet the relevant requirements of General Design Criteria 1, 2, and 61, 10 CFR Part 50, Appendix B, 10 CFR 50.34(a)(1), and 10 CFR Part 100, Appendix A, "Seismic and Geologic Siting Criteria for Nuclear Power Plants." This conclusion is based on: 1. The applicant’s having met the requirements of GDC 1 by providing a commitment in the SAR that Seismic Category I SSCs will be designed, constructed and operated under a QA Program, in compliance with the requirements of 10 CFR Part 50, Appendix B. 2. The applicant’s having met the requirements of GDC 2, 10 CFR Part 100, Appendix A and 10 CFR 50, Appendix S, by having properly classified SSCs important to safety as Seismic Category I items in accordance with the positions of RG 1.29, "Seismic Design Classification," RG 1.151, "Instrument Sensing Lines" and RG 1.189 “Fire Protection for Nuclear Power Plants.” The identified SSCs are those plant features necessary to assure (1) the integrity of the reactor coolant pressure boundary, (2) the capability to shut down the reactor and maintain it in a safe shutdown condition, and (3) the capability to prevent and mitigate the consequences of accidents that could result in potential offsite exposures comparable to the guideline exposures of 10 CFR Part 100. 3. Those SSCs not identified as Seismic Category I, but whose failure could reduce the functioning of any Seismic Category I feature to an unacceptable safety level or result in incapacitating injury to control room personnel, having been identified for analysis to assure they will not fail during a SSE. 3.2.1-10 Revision 2 - March 2007