Document: NUREG-0800
Document ID: 0bc22ae4-5c52-4b2a-bb94-6d323cffe8b8
Document Type: srp
Title: SPECIAL TOPICS FOR MECHANICAL COMPONENTS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070335.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.1
CFR Part: 
CFR Title: 

Content:
pport structures. The section of the applicant's SAR which pertains to transients will be acceptable if the transient conditions selected for equipment fatigue evaluation are based upon a conservative estimate of the magnitude and frequency of the temperature and pressure conditions resulting from those transients. To a large extent the selection of these specific transient conditions is based upon engineering judgment and experience. Some guidance on the selection of these transients and combinations can be found in References 8 and 9. Transients and resulting loads and load combinations with appropriate specified design and service limits must provide a complete basis for design of the reactor coolant pressure boundary for all conditions and events expected over the service lifetime of the plant. Consideration should be given to the number of transients appropriate for the design life of the plant. Also, environmental conditions to which equipment important to safety will be exposed (e.g., chemistry of the coolant water) should be considered to minimize the degradation of materials due to corrosion.21 2. To meet the requirements of 10 CFR Part 50, Appendix B, and GDC 1, a list of computer programs that will be used (preferably programs which are recognized and widely known) in dynamic and static analyses to determine the structural and functional integrity DRAFT Rev. 3 - April 1996 3.9.1-4 of seismic Category I Code and non-Code items, and the analyses to determine stresses shall be provided. For each program the following information shall be provided to demonstrate its applicability and validity: a. The author, source, dated version and facility. b. A description, and the extent and limitation of its application. c. The computer program solutions to a series of test problems which shall be demonstrated to be substantially similar to solutions obtained from any one of sources 1 through 4, and source 5: (1) hand calculations22 (2) analytical results published in