Document: NUREG-0800
Document ID: da329347-38b4-4a93-9f61-aba3d4021e1e
Document Type: srp
Title: -
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1319/ML13198A223.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.7.2
CFR Part: 
CFR Title: 

Content:
Revision 4 – September 2013 from the minimum as-designed gap, considering construction tolerances. The criterion of no physical interaction should be demonstrated for all elevations of the non-seismic Category I structure, taking into consideration the potential for sliding and rocking of the non-seismic Category I structure. A conservative way to address criterion C is to apply a linear elastic analysis to the non- seismic Category I structure, similar to seismic Category I structures. However, depending on the magnitude of the gap between the non-seismic Category I structure and the adjacent seismic Category I SSCs, a limited inelastic response may be permissible for the non-seismic Category I structure, provided the structural integrity can be demonstrated, to ensure no physical interaction between the non-seismic Category I structure and all adjacent seismic Category I SSCs. In the assessment, the effect of structure-soil-structure interaction 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 is 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-seismic Category I structures. Consequently, DC applicants should provide sufficient analysis and design information