Document: NUREG-0800
Document ID: 4851d1d8-cf40-4a04-920b-1e59a44d3f2e
Document Type: srp
Title: SPECIAL TOPICS FOR MECHANICAL COMPONENTS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1608/ML16088A068.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.1
CFR Part: 
CFR Title: 

Content:
usually within a +5 percent error band, verifies the quality and adequacy of the computer programs for the functions for which they were designed. 4. If the applicant elects to use experimental stress analysis techniques in lieu of theoretical stress analyses, sufficient information should be presented in the SAR to demonstrate that the requirements of Appendix II to ASME Code, Section III, Division 1, applicable to the conditions in the “Design Specifications” have been met. 5. If the applicant employs an elastic or an elastic-plastic method of analysis to evaluate the design of safety-related Code or non-Code items for which Service Level D limits have been specified (NB-3225 and Appendix F to ASME Code, Section III, Division 1) the review considers the following points: A. The applicant should demonstrate that the stress-strain relationship for component materials to be used in the analysis is valid. The ultimate strength values at service temperature should be justified. B. The analytical procedures to be used in the analysis are reviewed to determine the validity of the analysis. Any computer program used should meet the applicable requirements of Subsection II.2.C of this SRP section. C. If elastic system analysis is used, its application may require detailed review and justification if applied to the analysis of systems which contain active components with close tolerances or systems in which the sequence of load application could significantly affect the actual stress distribution. D. If elastic, elastic-plastic or limit analysis methods are used for components with elastic or elastic-plastic system analyses, the bases for these procedures are reviewed. The applicant should provide assurance that the calculated item or item support deformations and displacements do not violate the corresponding limits and assumptions on which the methods for the system analysis are based. 6. For review of a DC application, the reviewer should follow the above procedures