Document: NUREG-0800
Document ID: 791dfc73-1a98-485f-a0c2-c02790f00284
Document Type: srp
Title: VIBRATORY GROUND MOTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070730593.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.2
CFR Part: 
CFR Title: 

Content:
of Nuclear Power Plants," describes programs of site investigations related to geotechnical aspects that would normally meet the needs for evaluating the safety of the site from the standpoint of the performance of foundations and earthworks under anticipated loading conditions, including earthquakes. It provides general guidance and recommendations for developing site-specific investigation programs as well as specific guidance for conducting subsurface investigations, such as borings and sampling. Regulatory Guide 4.7, "General Site Suitability Criteria for Nuclear Power Stations," discusses the major site characteristics related to public health and safety that the staff considers in determining the suitability of sites for nuclear power stations. Regulatory Guide 1.60, "Design Response Spectra for Seismic Design of Nuclear Power Plants,” states that smoothed response spectra are generally used for design purposes. The Regulatory Guide 1.60 standard spectral shape has been frequently used for certified seismic design response spectra (CSDRS). Under the combined license (COL) procedure, the GMRS are used to determine the adequacy of the CSDRS for a site. If adequate, then the CSDRS becomes the SSE for the site. Regulatory Guide 1.165, "Identification and Characterization of Seismic Sources and Determination of Safe Shutdown Earthquake Ground Motion," describes acceptable methods to: (1) conduct geological, seismological, and geophysical investigations of the site and region around the site, (2) identify and characterize seismic sources, (3) perform probabilistic seismic hazard analysis (PSHA), and (4) determine the GMRS for the site (see SRP Section 2.5.2.6) using the reference-probability approach. Regulatory Guide 1.208, “A Performance-Based Approach to Define the Site-Specific Earthquake Ground Motion,” describes acceptable methods to: (1) conduct geological, seismological, and geophysical investigations of the site and region around the site, (2)