Document: NUREG-0800
Document ID: 6cdd237d-c5b3-4a09-8753-54cfe1fea503
Document Type: srp
Title: REACTOR VESSEL MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0631/ML063190007.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.3.1
CFR Part: 
CFR Title: 

Content:
f Code Sections III and IX may be used. Any process used shall be such that the records required by NB-4300 of Section III can be made, with the exception of stud welding, which is acceptable only for minor nonpressure attachments. B. ASME Code Sections III and IX criteria for welding ferritic steel are supplemented by the regulatory positions in Regulatory Guides (RGs) 1.50, “Control of Preheat Temperature for Welding of Low-Alloy Steel,” and 1.34, “Control of Electroslag Weld Properties.” C. The regulatory positions of RG 1.43, “Control of Stainless Steel Weld Cladding of Low-Alloy Steel Components,” provide the acceptance criteria to avoid underclad cracking of stainless steel clad ferritic components. D. ASME Code Sections III and IX criteria for welding austenitic stainless steels are supplemented by the regulatory positions in RG 1.31, “Control of Ferrite Content in Stainless Steel Weld Metal,” and RG 1.34. For the BWR austenitic stainless steel reactor vessel attachments and appurtenances specified in Generic Letter (GL) 88-01, the weld metal ferrite content should be controlled as described in the positions of Attachment A to GL 88-01 or the recommendations of NUREG-0313, Revision 2. E. The regulatory positions of RGs 1.44, “Control of the Use of Sensitized Stainless Steel,” and 1.37, “Quality Assurance Requirements for Cleaning of Fluid Systems and Associated Components of Water-Cooled Nuclear Power Plants,” provide the acceptance criteria to avoid sensitization and contamination of stainless steel. RG 1.44 states that non-sensitization should be verified using ASTM A-262 Practices A or E, or another method that can be demonstrated to show Revision 2 - March 2007 5.3.1-7 nonsensitization of austenitic stainless steel. Alternative tests to those in ASTM A-262 that have been previously accepted include ASTM A 708. For BWRs, the control of sensitized steel per RG 1.44 should be modified as necessary to conform with the positions in