Document: NUREG-0800
Document ID: 8160c1fd-7cef-4c93-8e12-456019f2cfd2
Document Type: srp
Title: FOUNDATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1319/ML13198A267.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.5
CFR Part: 
CFR Title: 

Content:
ess the applicant specifically selects it as a design input. If the OBE is set at one-third or less of the safe-shutdown earthquake (SSE) ground motion, 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 to demonstrate that the seismic Category I foundations remain functional and fall within applicable stress, strain, and deformation limits. SRP Section 3.7 provides additional guidance on OBE use. 4. Design and Analysis Procedures. The design and analysis procedures used for seismic Category I foundations are acceptable if found to be in accordance with the following: A. The design should consider the soil-structure interaction (SSI), hydrodynamic effect, and dynamic soil pressure. B. For seismic Category I concrete foundations other than the containment foundations, the procedures are in accordance with the ACI 349, with additional guidance provided by RG 1.142. 3.8.5-9 Revision 4 – September 2013 C. For seismic Category I steel foundations, the procedures are in accordance with ANSI/AISC N690-1994 including Supplement 2 (2004). D. For the containment foundation, if in accordance with the design and analysis procedures referenced in SRP Section 3.8.1, Subsection II.4. E. The design report is acceptable if it satisfies the guidelines provided in SRP Section 3.8.4, Appendix C. F. The structural audit is conducted in accordance with SRP Section 3.8.4, Appendix B. G. Methods for determining the sliding forces and overturning moment attributable to an earthquake should be in accordance with the methods described in SRP Section 3.7.2. H. Computer programs are acceptable if the validation provided is found to be in accordance with the procedures delineated in Subsection II.4.E of SRP Section 3.8.1. In addition to the above, the design and analysis procedures for the following details are reviewed on a case-by-case basis: A. Appropriateness of the method for