Document: NUREG-0800
Document ID: 850abfae-e6b2-4682-9637-b4f316265b4d
Document Type: srp
Title: - Foundation Interfaces.  In meeting the requirements of 10 CFR Parts
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1230/ML12302A004.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.4.3
CFR Part: 
CFR Title: 

Content:
and 100, the discussion of the relationship of foundations and underlying materials is acceptable if it includes (1) a plot plan or plans showing the locations of all site explorations, such as borings, trenches, seismic lines, piezometers, geologic profiles, and excavations with the locations of the safety-related facilities superimposed thereon; (2) profiles illustrating the detailed relationship of the foundations of all seismic Category I and other safety-related facilities to the subsurface materials; (3) logs of core borings and test pits; and (4) logs and maps of exploratory trenches in the application for an early site permit or COL. A supplemental report providing geologic maps and photographs of the excavations for the facilities of the nuclear power plant should be provided when available. Plot plans and profiles are reviewed by comparing the subsurface materials with the proposed locations (horizontal and vertical) of foundations and walls of all seismic Category I facilities. The profiles and plot plans are cross-checked in detail with the results of all subsurface investigations conducted at the site to ascertain that sufficient exploration has been carried out and to determine whether or not the interpretations made by the investigators are valid and the foundation design assumptions contain adequate margins of safety. 4.