Document: NUREG-0800
Document ID: 1c54f5f9-dd57-4543-a00d-1597061af2e0
Document Type: srp
Title: SEISMIC CLASSIFICATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1608/ML16084A812.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2.1
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for mechanical engineering reviews Secondary - Organizations responsible for the review of component performance and testing I. AREAS OF REVIEW General Design Criterion (GDC) 2, “Design Bases for Protection Against Natural Phenomena,” of Title 10 of the Code of Federal Regulations (10 CFR) Part 50, “Domestic Licensing of Production and Utilization Facilities,” Appendix A, “General Design Criteria for Nuclear Plants,” in part, requires that structures, systems, and components (SSCs) important to safety be designed to withstand the effects of earthquakes without loss of capability to perform their safety functions. Important to safety SSCs are those SSCs that provide reasonable assurance that the facility can be operated with adequate protection to the health and safety of the public. The earthquake against which these plant features are designed is defined as the operating basis earthquake (OBE) in 10 CFR Part 100, “Seismic and Geologic Siting Criteria for Nuclear Power Plants,” and Appendix S to 10 CFR Part 50, “Earthquake Engineering Criteria for Nuclear Power Plants.” Appendix S to 10 CFR Part 50 and 10 CFR Part 100 require safety-related SSCs must be designed to withstand a safe shutdown earthquake (SSE). Regulatory Guide (RG) 1.29, “Seismic Design Classification” defines the list of SSCs that need to be designed to withstand an SSE and designates these plant features as seismic Category I. The SSE is based upon an 3.2.1-2 Revision 3 – July 2016 evaluation of the maximum earthquake potential and is that earthquake which produces the maximum vibratory ground motion for which seismic Category I SSCs are designed to remain functional, in accordance with 10 CFR Part 50, Appendix S. Appendix S also requires consideration of surface deformation. The specific areas of review are as follows: 1. This SRP section reviews the seismic classification design criteria and application of that