Document: NUREG-0800
Document ID: 9cdf4eb8-90c4-435e-84a4-d23c09056921
Document Type: srp
Title: STABILITY OF SUBSURFACE MATERIALS AND FOUNDATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070268.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.5.4
CFR Part: 
CFR Title: 

Content:
plication is reviewed as outlined above.55 In the ABWR and System 80+ design certification FSERs the Staff accepted an exemption to a 10 CFR 100, Appendix A requirement that all safety-related SSCs be designed to remain functional and within applicable stress and deformation limits when subjected to an OBE. Acceptance of the exemption was predicated on the use of an alternative seismic analysis based entirely on the SSE and implementation of additional procedural requirements relating to a seismic event. In particular, once the OBE was eliminated from the design analysis of SSCs it was necessary to redefine the OBE as an inspection level earthquake with a maximum vibratory ground acceleration equal to one-third of the SSE, or less.56 For standard design certification reviews under 10 CFR Part 52, the procedures above should be followed, as modified by the procedures in SRP Section 14.3 (proposed), to verify that the design set forth in the standard safety analysis report, including inspections, tests, analysis, and acceptance criteria (ITAAC), site interface requirements and combined license action items, meet the acceptance criteria given in subsection II. SRP Section 14.3 (proposed) contains procedures for the review of certified design material (CDM) for the standard design, including the site parameters, interface criteria, and ITAAC.57 IV. EVALUATION FINDINGS If the evaluation by the staff, on completion of the review of geotechnical engineering aspects of the plant site, confirms that the applicant has met the requirements of References 1 through 7 and the regulatory positions of References 8 through 11, the conclusion in the SER will state that the investigations performed at the site are adequate to justify the soil and rock characteristics used in the design, and that the design analyses contain adequate margins of safety for construction and operation of the subject nuclear power plant. Staff reservations about any portion of the applicant's analyses will