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:
and cooldown operations. III. REVIEW PROCEDURES The reviewer will select and emphasize material from the procedures described below, as may be appropriate for a particular case. 1. Preliminary Safety Analysis Report (PSAR) Information in the PSAR is reviewed for a commitment that the fracture toughness of the ferritic materials in the reactor coolant pressure boundary will comply with the requirements of Appendix G of 10 CFR Part 50, 5.3.2-4 Rev. 1 - July 1981 as detailed in Section III of the ASME Boiler and Pressure Vessel Code and that the materials in the beltline region of the reactor vessel will comply with the requirements of Appendices G and H of 10 CFR Part 50 and Regulatory Guide 1.99, "Effect of Residual Elements on Predicted Radiation Damage to Reactor Vessel Materials." 2. Final Safety Analysis Report (FSAR) The limits in the plant Technical Specifications will be shown using real temperature. These curves and their bases are reviewed to determine acceptability in the following areas: a. The limiting RTNDT has been properly determined, and radiation effects are included in a conservative manner. b. Limits are shown for all required conditions. C. The limits proposed are consistent with the acceptance criteria described in II. above. d. The procedures for updating the limit curves, in conjunction with scheduled tests on material surveillance specimens, are well defined and included in the Technical Specifications. 3. Acceptability Determination Methods The reviewer evaluates each limit curve for acceptability by performing check calculations using the simplified methods referenced in the Code and WRC Bulletin 175 that have been verified by the Materials Engineering Branch to yield conservative values. These methods are described in detail by examples below, and the curves necessary to perform the calculations are included herein as Figures 1, 2 and 3. a. Preservice Hydrostatic Tests The preservice hydrotest at 1.25 design pressure corresponds to the