Document: NUREG-0800
Document ID: ce3522a1-5c42-492a-95d7-9087534cf63c
Document Type: srp
Title: STABILITY OF SLOPES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070270.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.5
CFR Part: 
CFR Title: 

Content:
ions. The minimum computed safety factor was 1.6 using conservative slope and material parameters. Manmade earth slopes related to the safety of the plant include excavation cuts for the ultimate heat sink canal and dams and dikes for the ultimate heat sink storage pond. An extensive investigation and test program has determined all the significant characteristics and properties of cut slopes and fill embankments. Earthwork compaction criteria, construction control, and select fill materials are consistent with high-quality water-retention facilities. Conservative stability analyses of these slopes under SSE conditions indicated minimum safety factors of 1.5. DRAFT Rev. 3 - April 1996 2.5.5-14 The staff concludes that information including analysis and substantiation presented by the applicant is sufficient to demonstrate the dynamic and static stability of all slopes whose failure could adversely affect directly or indirectly safety-related structures of the nuclear plant or pose a hazard to the public and meets the requirements of the pertinent Commission's regulations (site appropriate References 1 through 7). The applicant has met the requirements of the pertinent Commission's regulations (cite appropriate References, 1 through 7) with respect to slope characteristics; design criteria and design analyses; results of investigations including borings, shafts, pits, trenches, and laboratory tests; properties of borrow materials; and compaction and excavation specifications by meeting the regulatory position in Regulatory Guide (cite appropriate References 8 through 11) or by providing and meeting an alternative method to these regulatory positions that the staff has reviewed and found to be acceptable. Based on the results of the applicant's investigations, laboratory and field tests, analyses, and criteria for design and construction, we and our consultantsthe staff concludes that natural and 48 manmade slopes will remain stable under SSE conditions and that