Document: NUREG-0800
Document ID: 78905d69-1945-4638-99b9-2db68eb3da77
Document Type: srp
Title: SEISMIC SYSTEM ANALYSIS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070318.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.7.2
CFR Part: 
CFR Title: 

Content:
5.1 through 2.5.3. 2. The geotechnical parameters and methods employed in the analysis of free-field soil 12 media and soil properties are reviewed as described in SRP Section 2.5.4. 3. Seismic design response spectra are reviewed as part of its primary review responsibilities for SRP Section 3.7.1.13 4. Seismic design loading combinations for Seismic Category I structures are reviewed as part of its primary review responsibilities for SRP Sections 3.8.1-3.8.5.14 The results of the reviews for the operating basis earthquake (OBE) and the safe shutdown earthquake (SSE), soil properties, etc., are used as an integral part of the seismic analysis review of Category I structures.15 For those areas of review identified above as being part of other SRP sections, the acceptance criteria necessary for the review and their methods of application are contained in the referenced SRP sections. II. ACCEPTANCE CRITERIA The acceptance criteria for the areas of review described in Subsection I of this SRP section are given below. Other approaches that can be justified to be equivalent to or more conservative than the stated acceptance criteria may be used. The staff accepts the design of structures, systems, and componentsSSCs that are important to safety and must withstand the effects of 16 earthquakes if the relevant requirements of General Design Criterion (GDC) 2 contained in Appendix A to 10 CFR Part 50 (Ref. 1) and Appendix A to 10 CFR Part 100 (Ref. 2) 17 18 concerning natural phenomena are complied with. The relevant requirements of GDC 2 and Appendix A to 10 CFR Part 100 are: 1A. General Design Criterion 2 - The design basis shall reflect appropriate consideration of 19 the most severe earthquakes that have been historically reported for the site and surrounding area with sufficient margin for the limited accuracy, quantity, and period of time in which historical data have been accumulated. 2B. Appendix A to 10 CFR Part 100 - Two earthquake levels , the safe shutdown 20 21