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:
s not fracture at the reconstitution welds) without overheating (possibly in ducing annealing) the test section. The assurance program should describe the proce dures to be used for the reconstitution process. The procedures and criteria of ASTM Standard E 1253-88 (Ref. 19), "Standard Guide for Reconstitution of Irra diated Charpy Specimens," are sufficient to demon strate an adequate reconstitution method. Other pro posed methods should have appropriate justification. 3.1.5 Specimen Testing 3.1.5.1 Test Procedures. The assurance pro gram should describe the procedures used for testing the Charpy specimens, either full-size or sub-size. For testing full-size Charpy specimens, either reconstituted specimens or specimens fabricated from samples re moved from the vessel beltline, testing should be per formed using equipment and testing procedures similar to those used to develop surveillance data, as outlined in ASTM Standards E 185-82 (Ref. 14) and E 23-88 (Ref. 20). Testing of sub-size Charpy specimens should fol low the general procedures and methods in ASTM Standard E 23-88 (Ref. 20) for testing of full-size Charpy specimens. For testing sub-size Charpy speci mens, a description of the general test procedures and the testing equipment should be provided in the assur ance program. In addition, a method for applying the 1.162-11 results from the tests of the sub-size specimens should be described. 3. 1.S.2 Test Plan. The assurance program should describe the test plan, including the number of speci mens to be tested and the method for selecting test temperatures. This description should include the steps taken to ensure that a reasonable measure of recovery is achieved by the testing; the description should also include the proposed method for handling uncertainty in the test results. Testing to evaluate percent recovery of ARTNDT should result in an unambiguous evaluation of the tem perature at which the average Charpy energy versus temperature curve achieves an