Document: NUREG-0800
Document ID: 576e15f5-a1b7-4655-b635-cd08a4f90ad2
Document Type: srp
Title: - Techniques to Improve Subsurface Conditions.  In meeting the requirements
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1331/ML13311B744.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.4.12
CFR Part: 
CFR Title: 

Content:
te and to determine the potential influence of these characteristics on the design of SSCs designated as important to safety. Meeting these requirements provides assurance that plant SSCs important to safety will be designed to withstand appropriately severe static and dynamic loads on the foundations. Compliance with GDC 1 requires that SSCs be tested in accordance with quality standards commensurate with the importance of their safety functions, that test standards be applicable and sufficient, and that appropriate records maintained. SRP Section 2.5.4 describes staff positions related to static and dynamic test and evaluation programs for soil and rock foundations of structures important to safety. This SRP section describes acceptable programs and laboratory test practices for such subsurface investigations. RGs 1.132 and 1.138 describe acceptable static and dynamic test (and/or evaluation) qualification criteria, including requirements for documentation, for soil and rock foundations at nuclear power plants. Meeting the requirements of GDC 1 provides assurance that the foundation characteristics of the proposed nuclear power plant will be accurately determined and that the design of its earthworks will meet the required quality standards. Compliance with GDC 2 and Appendix S to 10 CFR Part 50 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 earthworks for the proposed nuclear power plant. Analyses are performed to evaluate the responses of soil and rock embankments to seismic and dynamic loading for interaction between soils and structures as well as