Document: NUREG-0800
Document ID: 8981f423-79ff-42f4-9d5d-f0aa9777b60e
Document Type: srp
Title: STABILITY OF SLOPES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340606.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.5
CFR Part: 
CFR Title: 

Content:
ucted by the staff in evaluating the slope stability aspects of nuclear power plant sites. Subsection 2.5.5.1. Plot plans, cross sections, and profiles of all safety- related slopes in relation to the topography and physical properties of the underlying materials are reviewed and compared with exploratory records to 2.5.5-6 Rev. 2 - July 1981 ascertain that the most critical conditions have been addressed and that the characteristics of all slopes have been defined. The soil and rock test data are reviewed to insure that there is sufficient relevant test data to verify the soil strength characteristics assumed for the slopes, dikes, and dams under analysis. The evaluation is to some extent a matter of engineering judgment; however, if the safety factors resulting from the analysis are not appropriate to the hazards posed by a slope failure and other than clearly conservative soil properties and profiles were used, the applicant is required to obtain additional data to verify his assumptions, or to show that, even if the worst possible conditions are assumed, there is an adequate margin of safety. With respect to seismic analysis, this subsection and subsection 2.5.5.2 are reviewed concurrently because different methods of analysis may involve different approximations, assumptions, and soil properties. In addition to generic state-of-the-art literature, other potential sources of information are those containing design, construction, and performance records of natural slopes, excavation slopes, and dams that may have been constructed in the general vicinity of the nuclear power plant. Examples of such documents are design memoranda and construction reports regarding nearby projects of public agencies such as the Corps of Engineers, the Tennessee Valley Authority, the Bureau of Reclamation, and private construction contractors or architect- engineers. Subsection 2.5.5.2. The criteria, design techniques, and analyses are evaluated by the staff to ascertain that: 1.