Document: NUREG-0800
Document ID: 7898ad13-e75d-4328-9850-a9b6e908544c
Document Type: srp
Title: -
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1235/ML12353A354.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.7.2
CFR Part: 
CFR Title: 

Content:
Draft Revision 4 - December 2012 A conservative way to address criterion C is to apply a linear elastic analysis to the non- Category I structure, similar to Category I structures. However, depending on the magnitude of the gap between the non-Category I structure and the adjacent Category I SSCs, a limited inelastic response may be permissible for the non-Category I structure, provided the structural integrity can be demonstrated, to ensure no physical interaction between the non-Category I structure and all adjacent Category I SSCs. In the assessment, the effect of structure-soil-structure interaction (SSSI) should be accounted for, if significant. If an inelastic response method is utilized to address criterion C, the demand may be determined using several methods that consider the nonlinear behavior of the structure (e.g., nonlinear static analysis or nonlinear dynamic analysis). If a nonlinear time history analysis is utilized, then the guidance in SRP Section 3.7.1 II.1.B, Option 2, related to the use of multiple time histories for nonlinear analysis, should be followed. In this case, the acceptance criteria with respect to permissible displacements should be satisfied for each individual time history analysis. The use of inelastic response methods and acceptance criteria will be reviewed by the staff on a case-by-case basis. To ensure an adequate evaluation of the seismic Category I SSCs in a DC application, it is necessary to determine that they are not vulnerable to collapse or interaction with adjacent non-Category I structures. Consequently, DC applicants should provide sufficient analysis and design information concerning interaction of the Non-Category I Structures with Category I SSCs for staff review. In lieu of this, the DC application may describe the analysis and design approach that will be implemented by a COL applicant, and also identify a COL information item requiring that an evaluation be performed and documented to address the interaction of