Document: NUREG-0800
Document ID: 49dad160-99d7-4356-a70a-18bb6f08d141
Document Type: srp
Title: SEISMIC CLASSIFICATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1422/ML14227A643.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2.1
CFR Part: 
CFR Title: 

Content:
egree to which they are to be designed for seismic events. IV. EVALUATION FINDINGS The reviewer verifies that the applicant has provided sufficient information and that the review and calculations (if applicable) support conclusions of the following type to be included in the staff’s safety evaluation report. The reviewer also states the bases for those conclusions. SSCs (excluding electrical features) that are important to safety have been classified as seismic Category I items, have been designed to withstand the effects of an SSE, and have been identified in an acceptable manner in Tables 3.X.X and 3.X.X, and on system piping and instrumentation diagrams in the SAR. Other 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 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 GDC 1, 2, and 60, 10 CFR Part 50, Appendix B, 10 CFR 50.34(a)(1), and 10 CFR Part 100, Appendix A. 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, RG 1.151, and RG 1.189. 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