Document: NUREG-0800
Document ID: d4acff25-51e1-4891-b590-9ad78ef4833e
Document Type: srp
Title: REACTOR VESSEL MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340633.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.3.1
CFR Part: 
CFR Title: 

Content:
oped, they must be equivalent or superior to the techniques described in Appendix IX-6000 of Code Section III, and must be proven so, by demonstration on the spe- cific type of component part. 5.3.1-4 Rev. 1 - July 1981 4. Special Controls and Special Processes Used for Ferritic Steels and Austenitic Stainless Steels The acceptance criteria for special controls and processes in welding austenitic or ferritic steel components are based upon the following regulatory guides and ASME Code provisions necessary to satisfy the relevant requirements of GDC 1, 4, 14, and 30; Appendix B; and § 50.55a. a. Only those welding processes capable of producing welds in accordance with the welding procedure qualification requirements of 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 attach- ments. b. ASME Code Sections III and IX criteria for welding ferritic steel are supplemented by the regulatory positions in Regulatory Guides 1.50, "Control of Preheat Temperature for Welding Low-Alloy Steel," and 1.34, "Control of Electroslag Weld Properties." c. The regulatory positions of Regulatory Guide 1.43, "Control of Stainless Steel Weld Cladding of Low-Alloy Steel Components,'" provide the accept- ance criteria to avoid underclad cracking of stainless steel clad ferritic components. d. ASME Code Sections III and IX criteria for welding austenitic stain- less steels are supplemented by the regulatory positions in Regulatory Guide 1.31, "Control of Ferrite Content in Stainless Steel Weld Metal," and Regulatory Guide 1.34. e. The regulatory positions of Regulatory Guides 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