Document: NRC Regulatory Guide
Document ID: 1859c547-c10c-4ce4-ad2e-e54f7b66d4ef
Document Type: regulatory_guide
Title: Laboratory Investigations of Soils and Rocks for Engineering Analysis and Design of Nuclear Power Plants + HISTORY – HISTORY 07/2014 – DG-1256 , Proposed Revision 3 08/2001 – DG-1109 , Proposed Revision 2 (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1318/ML13186A032.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.138
CFR Part: 
CFR Title: 

Content:
and performed on standard equipment, require documentation by reference only. For tests for which no standard procedures are available or for which modified or alternative procedures are appropriate, laboratory personnel should document the details of the test procedures for evaluation and future reference. Personnel should document the technical basis for deviating from standard testing procedures. Use of nonstandard equipment, even if it is used with standard testing procedures, should also be documented. 5.3. Tests of Groundwater or Surface Waters a. Testing of groundwater and surface water depends on the nature of potential problems identified at the site. Acid water, for example, may cause the degradation of carbonate rocks and concrete foundations. Standard methods of testing water for physical, chemical, radioactive, and microbiological properties are described in “Standard Methods for the Examination of Water and Wastewater” (American Public Health Association, American Water Works Association, and Water DG-1256, Page 10 Environment Federation, 1999, Ref. 27). This reference also describes methods of testing polluted water, wastewaters, effluents, bottom sediments, and sludges. Investigators should use standard testing methods unless they encounter special problems that require modifications or alternative methods. 6. Testing Procedures for Determining Dynamic Soil Properties 6.1. General a. To ensure a realistic assessment of soil properties, it is important that the laboratory tests represent field conditions as closely as is practical. Before performing dynamic tests, laboratory personnel should determine the initial state of stress in the soil and perform a series of static consolidated- drained and consolidated-undrained triaxial compression tests to determine static strength. The dynamic testing program should include tests to determine the soil parameters needed as input for reference analyses and studies of soil structure interaction and to