Document: NUREG-0800
Document ID: fbf00155-ed67-4c5f-bb08-246909eb564a
Document Type: srp
Title: REACTOR COOLANT PRESSURE BOUNDARY MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340601.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.2.3
CFR Part: 
CFR Title: 

Content:
trols provide reasonable assurance that cracking of components made from low alloy steels will not occur during fabrication and minimize the possibility of subsequent cracking due to residual stresses being retained in the weldment. These control satisfy the quality standards requirements of GDC 1, GDC 30, and §50.55a. The controls imposed on electroslag welding of ferritic steels are in accordance with the recommendations of Regulatory Guide 1.34, "Control of Electroslag Weld Properties," and provide assurance that welds fabricated by the process will have high integrity and will have a sufficient degree of toughness to furnish adequate safety margins during operating, testing, maintenance, and postulated accident conditions. Conformance with the recommendations of Regulatory Guide 1.34 also satisfies the quality standards require- ments of GDC 1, GDC 30, and §50.55a. The controls imposed on welding ferritic steels under conditions of limited accessibility are in accordance with the recommendations of Regulatory Guide 1.71, "Welder Qualification for Areas of Limited Accessibility," and provide assurance that proper requalification of welders will be required in accordance with the welding conditions. These controls also satisfy the quality standards requirements of GDC 1, GDC 50, and §50.55a. The controls imposed on weld cladding of low-alloy steel components by austenitic stainless steel are in accordance with the recommendations of Regulatory Guide 1.43, "Control of Stainless Steel Weld Cladding of Low-Alloy Steel Components." These controls provide assurance that practices that could result in underclad cracking will be restricted. The controls also satisfy the quality standards requirements of GOC 1, GDC 30, and §50.55a. 5.2.3-15 Rev. 2 - July 1981 The controls to avoid stress corrosion cracking in reactor coolant pressure boundary components constructed of austenitic stainless steels limit yield strength-of cold-worked austenitic stainless steels to 90,000