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:
n a detailed evaluation of earthquake potential, taking into account the regional and local geology, Quaternary tectonics, seismicity, and site-specific geotechnical engineering characteristics of the site subsurface material. The principal regulation used by the staff in determining the scope and adequacy of the submitted seismologic and geologic information and attendant procedures and analyses is Title 10 of the Code of Federal Regulations (10 CFR) 100.23. The GMRS satisfy the requirements of 10 CFR 100.23 with respect to the development of the SSE. To use the GMRS as the site-specific SSE spectra, the design requirements specified in Section IV(a) of Appendix S to 10 CFR Part 50 must be met. The SSE spectra represent the design earthquake ground motions of the plant for which safety related structures, systems, and components (SSC) are designed to remain functional. As such, the SSE must satisfy both 10 CFR 100.23 and the design requirements specified in Appendix S to 10 CFR Part 50. Additional guidance on the development of the SSE is provided in SRP Section 3.7.1. Guidance on seismological and geological investigations is provided in RG 1.208. These investigations describe the seismicity of the site region and the correlation of earthquake activity with seismic sources. Seismic sources that have any parts within 320 km (200 miles) of the site are identified and characterized, including the rates of occurrence of earthquakes associated with each seismic source. More distant seismic sources that have a potential for earthquakes large enough to affect the total site hazard must also be evaluated for inclusion in the site probabilistic seismic hazard analysis (PSHA). The review covers the following specific areas: 1. Seismicity (Subsection 2.5.2.1) 2. Geologic and tectonic characteristics of the site and region (Subsection 2.5.2.2) 3. Correlation of earthquake activity with seismic sources (Subsection 2.5.2.3) 4. Probabilistic seismic hazard analysis and