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:
e velocity of the supporting foundation material is less than 1,000 fps, additional studies should be performed which consider the average shear wave velocity, and its degree of variability addressing potential impact of soft soil on SSI, potential settlements and design of foundation elements. 4. Review Considerations for DC and COL Applications A. COL Application Referencing an ESP and DC i. Site-specific FIRS and PBSRS are reviewed separately under this SRP section for adequacy. For COL application referencing an ESP and DC, the FIRS and PBSRS are included in the COL application. This review should include determination of the PBSRS at the surface 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 criterion for the minimum required response spectrum (in accordance with SRP Subsection II.1.A.ii) has been satisfied. 3.7.1-16 Revision 4 – December 2014 iii. Confirm that COL action items contained in the DC have been met. This includes seismic design parameters such as soil layering assumptions used in the certified design, range of soil parameters, shear wave velocity values, and minimum soil bearing capacity. Technical justification for all deviations from the range of values used in the standard plant design should be provided for review. iv. Confirm that the ESP conditions have been met or review the COL applicant’s approach to address any deviations. The PBSRS are generated using the soil profiles for which the performance-based FIRS are generated. The properties of the individual realizations of the soil column consist of at least 60 or more randomized soil profiles similar to those used in the PSHA process and reviewed under SRP Section 2.5.2 and as described in DC/COL-ISG-017. From this set of randomized columns, three individual soil