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:
ods will be used to determine the required OBE and SSE loadings and the response of SSCs, which will ensure that they will remain functional within applicable acceptance limits. III. REVIEW PROCEDURES The reviewer will select material from the procedures described below, as may be appropriate for a particular case. These review procedures are based on the identified SRP acceptance criteria. For deviations from these acceptance criteria, the staff should review the applicant’s evaluation of how the proposed alternatives provide an acceptable method of complying with the relevant NRC requirements identified in Subsection II. 3.7.1-18 Revision 3 - March 2007 1. Design Ground Motion A. Design Response Spectra. For the non-standard plant design (i.e., COL application that does not reference a CD), the design response spectra for the OBE and SSE, for all applicable damping values, are checked to ensure that the response spectra are in accordance with the acceptance criteria as given in subsection II.1.A.i. For the CD, the CSDRS for the OBE and SSE for applicable damping values are checked to ensure that the CSDRS are in accordance with the acceptance criteria as given in subsection II.1.A.ii. Any deviations from the acceptance criteria applicable to the development of the design response spectra or CSDRS that have not been adequately justified are identified, and the applicant is informed of the need for additional technical justification. B. Design Time History. Methods of defining the design ground motion time histories are reviewed to confirm that the acceptance criteria of subsection II.1.B of this SRP section are met. 2. Percentage of Critical Damping Values. The specific percentage of critical damping values for the OBE and SSE used in the analyses of Category I SSCs are checked to ensure that the damping values are in accordance with the acceptance criteria as given in subsection II.2 of this SRP section. Any differences in damping values that have not been