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:
S. Navy Department, U.S. Army Corps of Engineers, and U.S. Bureau of Reclamation) are often used in reviews to ascertain whether the analyses performed by the applicant are reasonable 2.5.5-7 Rev. 2 - July 1981 (Refs. 22, 26, 32, and 33). Many of the important interaction effects cannot be included in current analyses and must be treated in some approximate fashion. Engineering judgment is an important factor in the staff's review of the analyses and in assessing the adequacy of the resulting safety factors. If the staff review indicates that questionable assumptions have been made by the applicant or some nonstandard or inappropriate method of analysis has been used, then the staff or its consultant may model the dam or slope in a manner which it feels is more consistent with the data and perform an independent analysis employing both deterministic and probabilistic methods as appropriate. During the operating license review, all open items requiring resolution, including construction data and as-built analyses, settlement records, piezometer records, and absence of seepage, that support the adequacy and safety of the design, are reviewed by the staff. Subsection 2.5.5.3. A comprehensive program of site investigations including borings, sampling, geophysical surveys, test pits, trenches, and laboratory and field testing must be carried out by the applicant to define the physical characteristics of all soil and rock beneath safety-related and seismic Category I slopes, and borrow material that is to be used to construct safety- related dams, fills, and embankments (Refs. 10 and 11). The staff reviews J these investigations to ascertain that the program has been adequate to define the in situ and earthwork soil and rock characteristics. The decision as to the adequacy of the investigation program is based on the methods discussed in SRP Section 2.5.4. Subsection 2.5.5.4. The preliminary specifications and quality control techni- ques to be used during construction