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:
be appropriate for a particular case. For each area of review, the following review procedures apply: 1. Loading Combinations, System Operating Transient, and Stress Limits The objectives in reviewing the loading combinations and stress limits employed by the applicant in the design of Code Class 1, 2, and 3 components, component supports, and Class CS core support structures are to confirm that the appropriate postulated events 73 have been included, that the loading combinations (including system operating transients) and the designation of design and service stress limits are appropriate. The review conducted during the CP stageAt the CP stage, the reviewer determines that the 74 objectives have been addressed and are being implemented in the design by obtaining a commitment from the applicant that specific design criteria will be utilized. By checking selected Code required Design Documents such as Design Reports, Load Capacity Data Sheets, and related material, the OL stage review verifiesreviewer verifies at the OL stage that the design criteria have been utilized and that components have 75 been designed to meet the objectives. To assureensure that these objectives are met, the review is performed as follows: a. The applicant's proposed design and service loadings, and combinations thereof, are reviewed for completeness and for appropriate designation of corresponding design and service stress limits. b. The combination of design and service loadings, including procedures for combination, proposed by the applicant for each Code-constructed item are reviewed to determine if they are adequate. This aspect of the review is made by comparison with the loading combinations and procedures for combination set forth in Appendix A. Deviations from the position are evaluated on a case-by-case basis by questions addressed to the applicant to determine the rationale and justification for exceptions. Final determination is based on engineering judgment and past experience