Document: NUREG-0800
Document ID: c165ebfe-8431-4d56-8bc9-97c2227d45bb
Document Type: srp
Title: SEISMIC SYSTEM ANALYSIS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070640311.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.7.2
CFR Part: 
CFR Title: 

Content:
ubpart A which is applicable to power reactor site applications before January 10, 1997, refers to appendix A of this part for sesimic criteria. 10 CFR 100, Appendix A provides definitions for the OBE and the SSE, and requires that the engineering methods, used to ensure that the required safety functions are maintained during and after the vibratory ground motion associated with the SSE, involve the use of either a suitable dynamic analysis or an appropriate qualification test methodology. 10 CFR 100, Appendix A requires that the applicable levels of vibratory ground motion corresponding to the OBE and the SSE are properly defined, and that adequate 3.7.2-19 Revision 3 - March 2007 methods are used to demonstrate that SSCs important to safety can withstand the seismic and other concurrently applied loads. 10 CFR Part 100, Subpart B which is applicable to power reactor site applications on or after January 10, 1997, refers to10 CFR 100.23 of this part for seismic criteria.10 CFR 100.23 describes the criteria and nature of investigations required to obtain the geologic and seismic data necessary to determine the suitability of the porposed site and the plant design bases. 10 CFR 100.23 also indicates that applications to engineering design are contained in 10 CFR Part 50, Appendix S. SRP Section 3.7.2 describes acceptable analytical methods for seismic evaluation of seismic Category I structures and systems. The criteria in SRP 3.7.2 provide methods acceptable to the staff for performing static and dynamic seismic analysis of systems. Criteria for the equivalent static load method and criteria for performing response spectrum or time history analyses for dynamic methods are provided. Meeting these requirements provides assurance that appropriate engineering methods will be used to seismically qualify systems important to safety, and thereby ensure that they will be able to perform their intended safety function when subjected to the SSE and OBE (if applicable). 3. 10