Document: NUREG-0800
Document ID: e2737d9a-8e56-46cb-a97d-aaf62a442c6c
Document Type: srp
Title: PRESSURE-TEMPERATURE LIMITS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340637.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.3.2
CFR Part: 
CFR Title: 

Content:
ature curve for heatup and cooldown calculated as described in the preceding section. The minimum temperature for the inservice hydrostatic test for the vessel used in the preceding example was 2730F. A vertical line at 2730F on the pressure-temperature curve, intersecting a curve 400F higher than the pressure-temperature limit curve as determined in the preceding section, constitutes the limit for core operation for this example. IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided to satisfy the requirements of this SRP section and that the completeness and technical adequacy of his evaluation will support the following statement in the staff's safety evaluation report: The pressure-temperature limits imposed on the reactor coolant system for all operating and testing conditions to assure adequate safety margins against nonductile or rapidly propagating failure are 5.3.2-9 Rev. 1 - July 1981 in conformance with the fracture toughness criteria of Appendix G of 10 CFR Part 50 and Section III, including Appendix G, "Protection Against Nonductile Failure," of the ASME Boiling and Pressure Vessel Code. The change in fracture toughness requirements of the pressure vessel during operation will be determined by Appendix H of 10 CFR Part 50. The use of operating limits, based upon the criteria defined in Standard Review Plan Section 5.3.2, provides reasonable assurance that nonductile or rapidly propagating failure will not occur, and constitutes an acceptable basis for satisfying the requirements of paragraph 50.55a of 10 CFR Part 50 and General Design Criteria 1, 14, 31 and 32 of Appendix A of 10 CFR Part 50. V. IMPLEMENTATION The following is intended to provide guidance to applicants and licensees regarding the NRC staff's plan to using this SRP section. Except in those cases in which the applicant proposed an acceptable alternative method for complying with specific portions of the Commission's regulations, the method described