Document: NUREG-0800
Document ID: 866c6ef6-2f4a-45c7-9e71-43e1f66a8422
Document Type: srp
Title: Draft Revision 3– July 2018
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1807/ML18071A066.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5
CFR Part: 
CFR Title: 

Content:
aragraph IV.A. Reactor vessel materials that do not meet the specified EOL acceptance criteria should be reviewed through an equivalent margins analysis in accordance with the same paragraph of 10 CFR Part 50, Appendix G. This equivalent margins analysis should be consistent with the guidance in Regulatory Guide 1.161, “Evaluation of Reactor Pressure Vessels with Charpy Upper-Shelf Energy Less Than 50 Ft-Lb,” which references ASME Code, Section XI, Appendix K, “Assessment of Reactor Vessels with Low Upper Shelf Charpy Impact Energy Levels.” 1.3 Reporting Requirements Fracture toughness information identified by the ASME Code and by Appendix G, 10 CFR Part 50, should be reported in the final safety analysis report (FSAR) to provide a basis for evaluating the adequacy of the operating limitations given in the TS or PTLR. In the case of older plants, the data may be estimated, using the procedures listed above, or other methods that can be shown to be conservative. 2. Operating Limitations for Fracture Toughness 2.1 Pressure-Temperature Operating Limitations As required by Appendix G, 10 CFR Part 50, the following operating limitations shall be determined and included in the TS or PTLR. The basis for the determination shall be reported by the applicant. In no case shall the limitations provide less safety margin than those determined in accordance with Appendix G, 10 CFR Part 50, and Appendix G to Section XI of the ASME Code. (1) Minimum temperatures for performing any hydrostatic test involving pressurization of the reactor vessel after installation in the system. (2) Minimum temperatures for all leak and hydrostatic tests performed after the plant is in service. (3) Maximum pressure-minimum temperature curves for operation, including startup, upset, and cooldown conditions. (4) Maximum pressure-minimum temperature curves for core operation. 2.2 Recommended Bases for Operating Limitations 2.2.1 Leak and Hydrostatic Tests BTP 5-3-5 Draft Revision 3 – July