Document: NRC Regulatory Guide
Document ID: a094549d-8685-4dad-b90f-c28c7d279a53
Document Type: regulatory_guide
Title: Geologic and Geotechnical Site Characterization Investigations for Nuclear Power Plants + HISTORY – HISTORY 08/2021 – DG-1392 , Proposed Revision 3 07/2014 – Periodic Review of Revision 2 – Reviewed with no issues identified 02/2001 – DG-1101 , Proposed Revision 2 (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2119/ML21194A176.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.132
CFR Part: 
CFR Title: 

Content:
ond (2–3 ft/minute). Borehole dipmeter Sidewall resistivity Provides strike and dip of bedding planes. Also used for fracture detection. Useful in determining information on location and orientation of bedding planes and fractures over a wide variety of hole conditions. Expensive log to make. Computer analysis of information needed for maximum benefit. Downhole flow meter Flow across the borehole Determines the rate and direction of ground water flow. A reliable, cost effective method to determine lateral foundation leakage under concrete structures. Assumes flow not influenced by emplacement of borehole. DG-1392, Appendix F, Page F-1 APPENDIX F IN SITU TESTING METHODS Table F-1 In Situ Tests for Rock and Soil (adapted from EM 1110-1-1804, U.S. Army Corps of Engineers, 2001) PURPOSE OF TEST TYPE OF TEST APPLICABILITY TO SOIL ROCK Shear strength Standard penetration test X Field vane shear X Cone penetrometer test X Direct shear X Plate bearing or jacking X Xa Borehole direct shearb X Pressuremeterb X Uniaxial compressiveb X Borehole jackingb X Bearing capacity Plate bearing X Xa Standard penetration X Stress conditions Hydraulic fracturing X X Pressuremeter X Xa Overcoring X Flatjack X Uniaxial (tunnel) jacking X X Borehole jackingb X Chamber (gallery) pressureb X Mass deformability Geophysical (refraction) X X Pressuremeter or dilatometer X Xa Plate bearing X X Standard penetration X Uniaxial (tunnel) jacking X X Borehole jackingb X Chamber (gallery) pressureb X Relative density Standard penetration X In situ sampling X Coneb penetration X Liquefaction susceptibility Standard penetration X Cone penetration test X Shear wave velocity (vs) X a. Primarily for clay shales, badly decomposed, or moderately soft rocks, and rock with soft seams. b. Less frequently used. DG-1392, Appendix F, Page F-2 APPENDIX F, Cont’d. Table F-2 In Situ Tests to Determine Shear Strength (adapted from EM 1110-1-1804, U.S. Army Corps of Engineers, 2001) TEST FOR REMARKS SOILS ROCKS