Document: NUREG-0800
Document ID: 1121c8ce-ab70-416c-9784-421014a1b25b
Document Type: srp
Title: SEISMIC DESIGN PARAMETERS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1419/ML14198A460.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.7.1
CFR Part: 
CFR Title: 

Content:
d analysis (PSHA) process as described in SRP Section 2.5.2. The resulting spectra described above are the PBSRS for the horizontal direction. The PBSRS for the vertical direction can be obtained with the appropriate V/H ratios used to develop the FIRS. The PBSRS are used to verify and ensure that the soil columns to be used in a deterministic SSI analysis produce surface response spectra which meet the performance requisite by enveloping the corresponding PBSRS. Additional guidance on demonstrating the adequacy of the soil columns is provided in SRP Section 3.7.2 II.4, “Soil-Structure Interaction,” by the FIRS and PBSRS are associated with subsurface conditions localized to a specific building. In addition, Title 10 of the Code of Federal Regulations (10 CFR) Part 50, “Domestic Licensing of Production and Utilization Facilities,” Appendix S, “Earthquake Engineering Criteria for Nuclear Power Plants,” is applicable to applications for a DC or COL pursuant to 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants,” or a CP or OL pursuant to 10 CFR Part 50 submitted on or after January 10, 1997. Applications subject to this appendix must: • Demonstrate that the SSE ground motion in the horizontal direction in the free-field at the FIRS must be an appropriate response spectrum with peak ground acceleration (PGA) of at least 0.1g. • Design SSCs to the OBE and SSE loadings. If the OBE is set at one- third or less of the SSE, an explicit analysis or design is not required. If the OBE is set at a value greater than one-third of the SSE, an analysis and design must be performed for the OBE to demonstrate that the applicable stress, strain, and deformation limits of the SSCs are satisfied. The seismic input motions to the SSI analyses can typically be placed at the free ground surface or at the foundation level using the guidance in this SRP Section 3.7.1, “Seismic Design Parameters,” as supplemented by DC/COL-ISG-017. The