Document: NUREG-0800
Document ID: d8b06230-c6c0-44fe-9ab8-99e2af79bb84
Document Type: srp
Title: - Properties of Subsurface Materials.  In meeting the requirements of 10 CFR
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1331/ML13311B744.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.4.2
CFR Part: 
CFR Title: 

Content:
Parts 50 and 100, the description of properties of underlying materials is considered acceptable if state-of-the-art methods are used to determine the static and dynamic engineering properties of all foundation soils and rocks in the site area to sufficient depth that impact behavior during construction and over the life of the facility, including during postulated seismic events. These methods are described, for example, in geotechnical journals published by the American Society of Civil Engineers, applicable standards published by the American Society for Testing and Materials, publications of the Institution of Civil Engineers, and various research reports prepared by universities. The properties of foundation material must be supported by field and laboratory test records. 2.5.4-8 Revision 5 – July 2014 Normally, a complete field investigation and sampling program must be performed to define the occurrence and properties of underlying materials at a given site. Summary tables must be provided which catalog the important test results; test results should be plotted when appropriate. Also, a detailed discussion of laboratory sample preparation must be given when applicable. For critical laboratory tests, full details must be given, e.g., how saturation of the sample was determined and maintained during testing, transported and how the pore pressures were monitored during the experiment. The applicant should provide a detailed and quantitative discussion of the criteria used to determine that the samples were properly taken, and tested to define all the critical soil parameters for the site, together with their potential variabilities. A sufficient number of measurements are needed in order to determine the parameters that can adequately represent the field conditions. Factors that should be considered when determining the number of measurements include the spatial variability (both horizontal and vertical); and the reliability and limitations of the method used