Document: NUREG-0800
Document ID: 613b5cc1-11b0-41c6-8f40-1107a777a795
Document Type: srp
Title: -14
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1233/ML12334A360.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.3
CFR Part: 
CFR Title: 

Content:
ance to safety and that these systems can accommodate the effects of normal operation as well as postulated events such as LOCA and the dynamic effects resulting from earthquakes. The specified design and service combinations of loadings, as applied to ASME Code Class 1, 2, and 3 pressure retaining components in systems designed to meet seismic Category I standards, are such as to provide assurance that, in the event of an earthquake affecting the site or other service loadings due to postulated events or system operating transients, the resulting combined stresses imposed on system components will not exceed allowable stress and strain limits for the materials of construction. Limiting the stresses under such loading combinations provides a conservative basis for the design of system components to withstand the most adverse combination of loading events without loss of structural integrity. 2 The applicant has met the requirements of 10 CFR 50.55a, 10 CFR Part 50, Appendix S and GDC 1, 2, and 4 with respect to the criteria used for design and installation of ASME Code Class 1, 2, and 3 overpressure relief devices by ensuring that safety and relief valves and their installations are designed to standards which are commensurate with their safety functions, and that they can accommodate the effects of discharge due to normal operation as well as postulated events such as LOCA and the dynamic effects resulting from the safe shutdown earthquake. The relevant requirements of GDC 14 and 15 are also met with respect to ensuring that the RCPB design limits for normal operation,