Document: NRC Regulatory Guide
Document ID: a1541707-8144-409c-8842-4ea7d4b8ef4e
Document Type: regulatory_guide
Title: 10/2019 (Rev. 19)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1912/ML19128A244.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.147
CFR Part: 
CFR Title: 

Content:
d. Alternatively, the licensee may use a different Tc value if it can be justified by plant-specific Charpy curves. 3/16/12 RG 1.147, Rev. 19, Page 18 CODE CASE NUMBER TABLE 2 CONDITIONALLY ACCEPTABLE SECTION XI CODE CASES CONDITION DATE OR SUPPLEMENT/ EDITION N-751 Pressure Testing of Containment Penetration Piping, Section XI, Division 1 When a 10 CFR 50, Appendix J, Type C test is performed as an alternative to the requirements of IWA-4540 (IWA-4700 in the 1989 edition through the 1995 edition) during repair and replacement activities, nondestructive examination must be performed in accordance with IWA-4540(a)(2) of the 2002 Addenda of Section XI. 8/3/06 N-754-1 Optimized Structural Dissimilar Metal Weld Overlay for Mitigation of PWR Class 1 Items, Section XI, Division 1 (1) The conditions imposed on the optimized weld overlay design in the NRC’s safety evaluation for the topical report, “Materials Reliability Program (MRP): Technical Basis for Preemptive Weld Overlays for Alloy 82/182 Butt Welds in PWRs (MRP-169),” Revision 1-A, Electric Power Research Institute (ADAMS Accession Nos. ML101620010 and ML101660468), must be satisfied. (2) In lieu of the preservice and inservice examinations, as specified in Section 3(c) of the Code Case, the optimized weld overlay must be examined in accordance with 10 CFR 50.55a(g)(6)(ii)(F). 1/13E N-766-1 Nickel Alloy Reactor Coolant Inlay and Onlay for Mitigation of PWR Full Penetration Circumferential Nickel Alloy Dissimilar Metal Welds in Class 1 Items, Section XI, Division 1 (1) Credit cannot be taken to reduce preservice and ISI requirements specified by this Code Case on an inlay or onlay if an inlay or onlay is applied to an Alloy 82/182 dissimilar metal weld that contains an axial indication that has a depth of more than 25 percent of the pipe wall thickness and a length of more than one-half of the axial width of the dissimilar metal weld or a circumferential indication that has a depth of more than 25 percent of