Document: NUREG-0800
Document ID: 9a241f0f-0a6b-4868-8e0c-4105d22a8e58
Document Type: srp
Title: VIBRATORY GROUND MOTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1230/ML12301A010.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.2
CFR Part: 
CFR Title: 

Content:
c and Seismic Siting Factors,” requires the applicant to determine the SSE and its uncertainty. 3. 10 CFR Part 50, Appendix A, General Design Criterion (GDC) 2 for COL applications, as it relates to consideration of the most severe of the natural phenomena that have been historically reported for the site and surrounding area, with sufficient margin for the limited accuracy, quantity and period of time in which the historical data have been accumulated. 4. 10 CFR Part 50, Appendix S as it is applicable to applications for a design certification or combined license to 10 CFR Part 52 or a construction permit or operating license pursuant to 10 CFR Part 50 on or after January 10, 1997. For SSE ground motions, SSCs will remain functional and within applicable stress, strain, and deformation limits. The required safety functions of SSCs must be assured during and after the vibratory ground motion through design, testing, or qualification methods. The evaluation must take into account soil-structure interaction effects and the expected duration of the vibratory motion. If the operating basis earthquake (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 to demonstrate that the applicable stress, strain, and deformation limits are satisfied. Appendix S also requires that the horizontal component of the SSE ground motion in the free-field at the foundation level of the structures must be an appropriate response spectrum with a peak ground acceleration of at least 0.1g. 5. For ESP applications, 10 CFR 52.17(a)(1)(vi) “Content of applications; technical information” requires identification of site characteristics that considers the most severe of the natural phenomena that have been historically reported for the site and surrounding area and with sufficient margin for the limited accuracy, quantity, and period of time in