Document: NUREG-0800
Document ID: d51db4b1-0b68-4e27-8107-a41ccdbd671a
Document Type: srp
Title: ASME CODE CLASS 1, 2, AND 3 COMPONENTS, COMPONENT SUPPORTS,
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070337.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.3
CFR Part: 
CFR Title: 

Content:
of gross rupture. E. General Design Criterion 15 as it relates to the reactor coolant system being designed with sufficient margin to assureensure that the design conditions are not exceeded. Specific criteria necessary to meet the relevant requirements of §50.55a and General Design Criteria 1, 2, 4, 14, and 15, by which the areas of review defined in subsection I of this SRP section are judged to be acceptable, are as follows: 30 1. Loading Combinations, System Operating Transients, and Stress Limits The design and service loading combinations, including system operating transients, and the associated design and service stress limits considered for each component and its supports should be sufficiently defined to provide the basis for design of Code Class 1, 2, and 3 components, and component supports, and Class CS core support structures for 31 32 all conditions. 3.9.3-5 DRAFT Rev. 2 - April 1996 The acceptability of the combination of design and service loadings (including system operating transients), applicable to the design of Class 1, 2, and 3 components, component supports, and Class CS core support structures, and of the designation of the 33 appropriate design or service stress limit for each loading combination, is judged by comparison with positions stated in Appendix A, and with appropriate standards acceptable to the staff developed by professional societies and standards organizations. The design criteria for internal parts of components such as valve discs, seats, and pump shafting should comply with applicable ASME Code or Code Case criteria. In those instances where no ASME criteria exist, the design criteria are acceptable if they assureensure the structural integrity of the part such that no safety-related functions are impaired. 2. Design and Installation of Pressure Relief Devices The applicant should use design criteria for pressure relief stationsinstallations specified 34 in Appendix O, ASME Code, Section III, Division 1, "Rules for the