Document: NRC Regulatory Guide
Document ID: a2b67b51-f5fe-4c86-a879-f0e439601f7f
Document Type: regulatory_guide
Title: Format and Content of Report for Thermal Annealing of Reactor Pressure Vessels
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740052.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.162
CFR Part: 
CFR Title: 

Content:
safety questions or changes to technical specifications are identified, the licensee may restart its reactor after the NRC places a summary of its inspection of the thermal annealing in the Public Doc ument Room, and the NRC holds a public meeting on the thermal annealing. If any unreviewed safety questions or changes to technical specifications are identified, the licensee may restart its reactor only after approval is obtained from the Director, Office of Nuclear Reactor Regulation, the summary of the NRC staff inspection is placed in the public document room, and a public meeting on the thermal annealing is held. 6. THERMAL ANNEALING RESULTS REPORT Every licensee who either completes a thermal an nealing or terminates an annealing but elects to take full or partial credit for the annealing must provide a report that includes the results of the annealing opera tion and verifies compliance with the approved plan. This report is to be submitted within three months of completing the thermal anneal, unless an extension is authorized by the Director, Office of Nuclear Reactor Regulation. This report should provide the following information: 1.162-18 K K (1) The time and temperature profiles of the ac tual thermal annealing, (2) The post-anneal RTNDT and Charpy upper shelf energy values of the reactor vessel mate rials for use in subsequent reactor operation, (3) The projected post-anneal reembrittlement trends for both RTNDT and Charpy upper shelf energy, and (4) The projected values of RTpTS and Charpy upper-shelf energy at the end of the proposed period of operation addressed in the application. 6.1 Description of the Overall Process A detailed summary of the annealing operation, including an actual time-temperature history, should be provided. The summary should identify the location and method of attachment for the specific instrumentation, including all temperature measure ment devices applied to the vessel and other structures and components. A history of the