Document: NUREG-0800
Document ID: 12c2dd4f-bb36-4f73-8d7d-7eff5a91a10d
Document Type: srp
Title: VIBRATORY GROUND MOTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0529/ML052910327.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.2
CFR Part: 
CFR Title: 

Content:
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 (Ref. 4). 2.5.2-2 Rev. 3 - March 1997 4. Regulatorv Guide 4.7. "General Site Suitability Criteria for Nuclear Power Stations." This guide 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 (Ref. 5). S. Regulatorv Guide 1.60. "Design Response Spectra for Seismic Design of Nuclear Power Plants (Ref. 6)." Smoothed response spectra are generally used for design purposes -- for example, a standard spectral shape that has been used in the past is presented in Regulatory Guide 1.60. These smoothed spectra are still acceptable when the smoothed design spectra compare favorably with site-specific response spectra derived from the ground motion estimation procedures discussed in Subsection 2.5.2.6. 6. Regulatorv Guide 1.165. "Identification and Characterization of Seismic Sources and Determination of Safe Shutdown Earthquake Ground Motion" (Ref. 9). This guide 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 PSHA, and (4) determine the SSE for the site (see SRP Section 2.5.2.6). The principal geologic and seismic consideration for site suitability and geologic and seismic design bases are given in 10 CFR 100.23. Regulatory Guide 1.165 (Ref. 9) provides more detailed guidance on investigations and application of probabilistic seismic hazard analysis (PSHA). The seismic design bases are predicated on a reasonable, conservative determination of the SSE. The SSE is based on consideration of the regional and lo'cal geology and seismology and on the characteristics of the subsurface materials at