Document: NUREG-0800
Document ID: 500d6b1d-6d0c-45db-abba-a953c0faa92a
Document Type: srp
Title: STABILITY OF SUBSURFACE MATERIALS AND FOUNDATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1006/ML100610449.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.4
CFR Part: 
CFR Title: 

Content:
at nuclear power plants. Meeting the requirements of GDC 1 provides assurance that the foundation characteristics of the 2.5.4-14 Revision 4 - May 2010 proposed nuclear power plant will be accurately determined and that the design of its foundations and earthworks will meet the required quality standards. Compliance with GDC 2 requires that the SSCs important to safety be designed to withstand the effects of natural phenomena such as earthquakes, tornadoes, hurricanes, floods, tsunamis, and seiches without loss of capability to perform their intended safety functions. SRP Section 2.5.4 describes staff positions related to site investigations (as well as soil and rock testing and analyses) for determining soil and rock properties and characteristics needed in the analysis and design of foundations and earthworks for the proposed nuclear power plant. Analyses are performed to evaluate the responses of soil and rock foundations and embankments to seismic and dynamic loading for interaction between soils and structures as well as to determine the liquefaction potential. Stability and deformation characteristics of foundation materials under static loadings are also determined. Meeting the requirements of GDC 2 provides assurance that structural foundations and embankments will respond as designed under static and seismic loads, thereby protecting structures and embankments important to safety against loss of integrity. Compliance with GDC 44 requires that a system be provided to transfer heat under normal operating and accident conditions from SSCs important to safety to an ultimate heat sink. GDC 44 applies to this SRP section because the ultimate heat sink for the cooling water system consists of complex water sources, including necessary retaining structures (e.g., a pond or river with a dam) and the associated canals and conduits connecting sources of water to the nuclear power plant. The earthworks, consisting of the dams and canals, must be constructed in such a