Document: NUREG-0800
Document ID: f8cd4fe8-c431-4489-99ec-d39a6ad936f3
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/ML0707/ML070730598.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.4.2
CFR Part: 
CFR Title: 

Content:
adequately sampled and tested. The relative density of the soils at the site should be determined. The applicant must also show that the consolidation behavior of the soils as well as their static and dynamic strength have been adequately defined. The discussion should explain how the developed data is used in the safety analyses, how the test data is analyzed to generate appropriate design parameters and present a table indicating the value of the parameters used in the analyses. Properties of underlying materials are evaluated to determine whether or not the investigations performed (including laboratory and field testing) were sufficient to justify the soil and rock properties used in the foundation analyses. To determine whether sufficient investigations were performed, the staff carefully reviews the criteria developed and used by the applicant in laying out the boring, sampling and testing program and evaluates the effectiveness of the program in defining the specific foundation conditions at the site to ensure that all critical conditions have been adequately sampled and tested. If suitable criteria have not been developed and used by the applicant, the staff develops appropriate criteria, using Regulatory Guide 1.132 and the data given in the SAR, and determines if sufficient investigation and testing have been carried out. If criteria are given, the staff reviews them to determine if they are appropriate and have been implemented. 2.5.4-8 Revision 3 - March 2007 If it is the staff's judgment that the applicant's investigations or testing are inappropriate or insufficient, additional investigations will be required. The final conclusion is based on professional judgment, considering the complexity of the site subsurface conditions. As part of the review, the staff must ascertain, often with the help of consultants, that state-of-the-art laboratory and field techniques and equipment are employed in determining the material properties. 3.