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:
effects, are reviewed. 9. Effects of Parameter Variations on Floor Responses The procedures that are used to consider the effects of the expected variations of structural properties, dampings values , soil properties, and soil-structure interaction on 7 the floor response spectra and time histories are reviewed. 10. Use of Equivalent Vertical Static Factors Where applicable, justification for the use of equivalent static factors as vertical response loads for designing Category I structures, systems, and componentsSSCs in lieu of the 8 use of a vertical seismic system dynamic analysis is reviewed. 11. Methods Used to Account for Torsional Effects The method employed to consider torsional effects in the seismic analysis of Category I structures is reviewed. The review includes evaluation of the conservatism of any approximate methods to account for torsional accelerations in the seismic design of Category I structures. 12. Comparison of Responses For the operating license review, where applicable, the comparison of seismic responses for major Category I structures using modal response spectrum and time history approaches is evaluated. 13. Analysis Procedure for Damping The analysis procedure to account for the damping in different elements of the model of a coupled system is reviewed. 14. Determination of Category I Structure Overturning Moments The description of the method and procedure used to determine design overturning moments for Category I structures is reviewed. 3.7.2-5 DRAFT Rev. 3 - April 1996 Review Interfaces:9 15. Interface Review The ECGB also performs the following reviews under the SRP sections indicated:10 1. Review of geological and seismological information to establish the free-field ground 11 motion is performed as described in SRP Sections 2.5.1 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