Document: NUREG-0800
Document ID: 495c2b41-2832-4900-9000-040f3ae8c835
Document Type: srp
Title: STEAM GENERATOR MATERIALS AND DESIGN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1614/ML16147A289.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.2.1
CFR Part: 
CFR Title: 

Content:
ts of GDC 1 and GDC 30 (for RCPB materials), the welding qualification, weld fabrication processes, and inspection during fabrication and assembly of the steam generator are performed by using quality standards (supplemented and modified, as necessary) commensurate with the importance of the functions to be performed. Ferritic steel welding of steam generator components is acceptable if it complies with 10 CFR Part 50, 10 CFR 50.55a(c), 10 CFR 50.55a(d), and 10 CFR 50.55a(e) and meets the following: i. Controls the amount of specified preheat in accordance with the requirements of paragraph D-1210 of Appendix D to Section III of the ASME Code, as supplemented by RG 1.50, “Control of Preheat Temperature for Welding of Low-Alloy Steel.” ii. Follows RG 1.34, “Control of Electroslag Weld Properties.” iii. Follows RG 1.71, “Welder Qualification for Areas of Limited Accessibility.” With respect to the qualification of the welder or welding operators when limited accessibility is an issue, these qualifications may be waived provided that 100-percent radiographic and/or ultrasonic examination of the completed welded joint is performed. In these cases, the examination procedures and acceptance standards should meet the requirements of Section III of the ASME Code. Records of the examination reports and 5.4.2.1-11 Revision 4 - July 2016 radiographs should be retained as part of the quality assurance documentation for the completed weld. iv. Follows RG 1.43, “Control of Stainless Steel Weld Cladding of Low-Alloy Steel Components.” 4. Fabrication and Processing of Austenitic Stainless Steel (if austenitic stainless steel is used for RCPB or SSPB applications) A. Limiting Susceptibility to Cracking Various factors can make austenitic stainless steel susceptible to stress- corrosion cracking. These factors include the yield strength of the material, exposure of the material to contaminants during cleaning and operation, and presence or absence of material