Document: NUREG-0800
Document ID: a2f24e8d-bc9b-4cc9-91c8-556b80541349
Document Type: srp
Title: SPECIAL TOPICS FOR MECHANICAL COMPONENTS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0704/ML070430402.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.1
CFR Part: 
CFR Title: 

Content:
provisions of Appendix II to ASME Code, Section III, Division 1 and, as in the case of analytical methods, if the information is sufficiently detailed to show the design meeting the provisions of the Code-required "Design Specifications." 4. To meet the requirements of GDCs 1, 14, and 15 when Service Level D limits are specified by the applicant for Code Class 1 and core support components and for supports, reactor internals, and other non-Code items, the methods of analysis to calculate the stresses and deformations should conform to the methods outlined in Appendix F to ASME Code, Section III, Division 1, subject to the conditions addressed in subsection III.4 of this SRP section. Technical Rationale The technical rationale for application of these criteria to reviews performed under this SRP section is discussed in the following paragraphs: 1. GDC 1 requires in part, that SSCs important to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety functions to be performed. 10 CFR Part 50, Appendix B, sets forth, in part, provisions to 3.9.1-6 Revision 3 - March 2007 assure that appropriate standards are specified and included in design documents (design methods and computer programs for the design and analysis of seismic Category I Code Class 1, 2, 3, and core support structures and non-Code structures) and that deviation from such standards are controlled. Special topics for mechanical components encompass items related to design transients like component supports, core supports, and reactor internals designated as Class 1, 2, and 3 under ASME Code, Section III, and those not covered by the Code. The applicability and validity of these criteria are demonstrated by requirements that the design methods and computer programs in design and analysis be within current state-of-the-art limits and design control measures acceptable to the staff. The requirements of GDC 1 provide reasonable assurance that the