Document: NUREG-0800
Document ID: 14a7e985-4073-4df6-83ff-5b8ab0be42c4
Document Type: srp
Title: Design Criteria and Analyses.  In meeting the requirements of 10 CFR Parts 50 and 100,
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1331/ML13316C068.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.5.2
CFR Part: 
CFR Title: 

Content:
SRP Subsections 2.5.2 and 3.7.1. The criteria, design techniques, and analyses are evaluated by the staff to ascertain that: 1. Appropriate state-of-the-art methods have been employed. 2. Conservative assumptions regarding soil and rock properties have been used in the design and analysis of slopes and embankments as discussed above in Subsection 2.5.5.1. 3. Appropriately conservative margins of safety have been incorporated in the design. The criteria and design methods used by the applicant are reviewed to ascertain that state-of-the-art techniques are being employed. The design analyses are reviewed to be sure that a conservative failure approach has been used and that all adverse conditions to which the slope might be subjected have been considered. Such conditions include ground motions, both horizontal and vertical, from the site-specific GMRS (along with satisfying the performance goal for the slopes), settlement, cracking, flood or low-water steady-state seepage, sudden drawdown of an adjacent reservoir, or a reasonable assumption of the possible simultaneous occurrence of two natural events such as an earthquake and flood. The review is also concerned with determining whether or not the soil and rock characteristics derived from the investigations described in Subsection 2.5.5.3 have been completely and conservatively incorporated into the design. When marginal factors of safety are indicated by the independent analyses performed by the staff, additional substantiation and refinement is required or the applicant must use more conservative assumptions. No single method of analysis is entirely acceptable for all stability assessments; thus, no single method of analysis can be recommended. Relevant manuals issued by public agencies (such as the U.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. Many of the important