Document: NUREG-0800
Document ID: 01f55174-7618-4db4-af9e-955638d7f076
Document Type: srp
Title: -
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1319/ML13198A223.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.7.2
CFR Part: 
CFR Title: 

Content:
on a case-by-case basis. Particularly, the basis for procedures used to account for uncertainties (by variation of parameters) are evaluated. The same acceptance criteria apply to the ISRS as apply to the design ground response spectrum, reviewed in Subsection II.1.B of SRP Section 3.7.1. As an example, if the average of the multiple response spectra generated from the multiple design time histories is used to envelop the design ground response spectrum, then the average of the multiple ISRS generated from the multiple analyses (each of which used one of the multiple design time histories) are used in design. The methods used for direct generation of ISRS are reviewed and accepted on a case- by-case basis.