Document: NUREG-0800
Document ID: bf62536e-58c7-4cb0-a51f-5c5ce2c21d6b
Document Type: srp
Title: DRAFT Rev. 2 - April
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070423.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.3.2.9
CFR Part: 
CFR Title: 

Content:
of the reactor vessel and its appurtenances by nondestructive examination are those specified in Code Section III, NB-5000, for normal methods of examination. When special techniques or procedures are developed, 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 29 specific type of component part. 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, and other regulatory documents necessary to satisfy the relevant 30 requirements of GDC 1, 4, 14, and 30; Appendix B; and §10 CFR 50.55a. 31 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 attachments. 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." Westinghouse Topical Report, WCAP-8678, "Effects of Preheat and Post Weld Heat Treat on Hydrogen-Induced Cracking in Pressure Vessel Steels," (Reference 28) provides acceptable alternatives to the recommendations in Regulatory Guide 1.50, Position C.2.32 c. The regulatory positions of Regulatory Guide 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