Document: NUREG-0800
Document ID: c3ea80e5-e862-496d-babf-f2404035419d
Document Type: srp
Title: 4.76
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1419/ML14198A460.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.05
CFR Part: 
CFR Title: 

Content:
and Sons, Inc., 1995. 6. Mario Paz, “Structural Dynamics: Theory and Computation” Van Nostrand Reinhold Company, 3nd Edition, 1989. 7. Trifunic, M. D. and Brady A. G, “A Study on the Duration of Strong. Earthquake Ground Motion,” Bulletin, Seismological Society of America, Volume. 65, Number 3, Page 581-626, June 1975. 3.7.1-43 Revision 4 – December 2014 SRP Section 3.7.1 Description of Changes Section 3.7.1 “Seismic Design Parameters” This SRP section affirms the technical accuracy and adequacy of the guidance previously provided in Revision 3, dated March 2007 of this SRP. See Agencywide Documents Access and Management System (ADAMS) Accession No. ML070640306. I. AREAS OF REVIEW 1. Revised the designation of the primary review responsibility to be the organization responsible for structural reviews. 2. Deleted reference to Regulatory Guide 1.165 because it was withdrawn. 3. Added text to reference additional interim staff guidance provided in ISG-01, ISG-017, and ISG-020. II. ACCEPTANCE CRITERIA 1. Added text to reference additional interim staff guidance in ISG-01 and ISG-017. 2. Enhanced guidance in SRP Section 3.7.1 II.1.B related to design time histories. The technical rationale for this change is as follows. When the seed recorded time history is selected based on a reasonable comparison of the spectral shape of the seed with the target design spectra, then it would facilitate and ensure that a good spectral matching can be achieved. This occurs because the magnitude of the seed record could be increased without the need for making significant adjustments at each frequency. This approach avoids increasing the input at certain frequencies too much which could lead to significant overprediction of the response at certain frequencies and cause underprediction at adjacent frequencies. 3. Enhanced guidance in SRP Section 3.7.1 II.1.B ii, Option 1 - single set of time histories, Approach 2) Item (d). The technical rationale for this change is as