Document: NUREG-0800
Document ID: 94da2f11-6df6-47d0-a25e-edeb21a4d649
Document Type: srp
Title: 3.7.1-12
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1419/ML14198A460.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.0
CFR Part: 
CFR Title: 

Content:
The dynamic models and analysis techniques should be sufficiently refined to be able to capture the response of the structures throughout the frequency range of interest, including the high frequency responses, typically expected in the central and eastern United States (CEUS) regions. The SSI analysis should also consider the site-specific soil variability (i.e., best estimate, lower bound estimate, and upper bound estimate of site properties) as described in Item v above. Compare these responses at the key locations in the structure to the standard design in-structure responses. If the computed responses from the CSDRS envelop the corresponding in-structure responses from the individual deterministic soil columns, the standard design is acceptable, assuming no other issue is identified during the review process. If the responses are not enveloped, additional analyses are required to demonstrate the acceptability of the design or the design might need to be modified. If further analyses are utilized, then the analyses should consider the potentially higher responses at all locations, not only those at the key locations described above. B. COL Application Referencing a DC. Follow the same steps described above under A, COL Application Referencing an ESP and DC, except that step iv does not apply to this case. C. COL Application Referencing an ESP. i. Site-specific FIRS and PBSRS are reviewed separately under this SRP section for adequacy. For COL application referencing an ESP, the FIRS and PBSRS are included in the COL application. This review should 3.7.1-18 Revision 4 – December 2014 include determination of the PBSRS and associated deterministically defined soil columns needed for determining the adequacy of the check on performance goal. The FIRS with the consistent soil columns together form the design basis that is used for the seismic analysis of the facilities. ii. Confirm that the ESP conditions have been met or review the COL applicant’s approach to