Document: NUREG-0800
Document ID: 585516eb-af20-45dc-a470-9638ec9381f3
Document Type: srp
Title: Each calculated spectrum of the artificial time history is considered to envelop
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070640306.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.0
CFR Part: 
CFR Title: 

Content:
ion not Referencing an ESP and DC. In addition to the criteria presented below, Figure 3 in Appendix D provides additional guidance in understanding the process when a certified design is not used. i. Site-specific GMRS are reviewed separately under SRP 2.5.2 for adequacy. ii. Follow the acceptance criteria described in subsection II.1.A (excluding subsection II.1.A.ii), of this SRP Section to develop the seismic design response spectra. The seismic SSI analysis would then follow the conventional approach for SSI analyses. Technical Rationale: The technical rationale for application of these requirements to reviewing this SRP section is discussed in the following paragraphs: 1. GDC 2 requires, in the relevant parts, that SSCs important to safety be designed to withstand the effects of natural phenomena such as earthquakes without loss of capability to perform their intended safety functions. GDC 2 further requires that the 3.7.1-16 Revision 3 - March 2007 design bases reflect appropriate consideration for the most severe natural phenomena 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 the historical data have been accumulated in the past. These data shall be used to specify the design requirements of nuclear power plant components to be evaluated as part of CP, OL, COL, ESP reviews, or for site parameters in the case of DCs, thereby ensuring that components important to safety will function in a manner that will maintain the plant in a safe condition. SRP 3.7.1 describes acceptance criteria for developing seismic design parameters to assure that they are appropriate and contain sufficient margin such that seismic analyses (reviewed under other SRP sections) accurately and/or conservatively represent the behavior of SSCs during postulated seismic events. Criteria is provided for developing the seismic design ground motion, percentage of critical damping,