Document: NRC Regulatory Guide
Document ID: 08cebcdf-2e81-4e08-a508-9f6b4701c0a5
Document Type: regulatory_guide
Title: Design, Fabrication, and Materials Code Case Acceptability, ASME Section III (Rev. 40)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2219/ML22195A282.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.84
CFR Part: 
CFR Title: 

Content:
tomer diaphragm should not exceed 10 years. 7/18/85 N-55 (1609-1) Inertia and Continuous Drive Friction Welding, Section I, III, IV, VIII, Division 1 and 2, and IX 4/5/84 N-60 (1618-2) N-60-1 Material for Core Support Structures, Section III, Division 1, Subsection NG Welding of age-hardenable Alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition. 5/25/83 9/17/84 N-60-2 N-60-3 N-60-4 Material for Core Support Structures, Section III, Division 1, Subsection NG 9/5/85 5/13/91 2/15/94 Welding of age-hardenable Alloy SA-453 Grade 660 and SA-637 Grade 688 should be performed when the material is in a solution-treated condition. For SA-479 material, the maximum yield strength should not exceed 90,000 pounds DG-1405, Page 39 CODE CASE NUMBER TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION DATE per square inch (psi) because of the susceptibility of this material to environmental cracking. N-60-5 Material for Core Support Structures, Section III, Division 1, Class 1 The maximum yield strength of strain-hardened austenitic stainless steel shall not exceed 90,000 psi because of the susceptibility of this material to environmental cracking. 2/20/04 N-62-2 (1621-2) N-62-3 N-62-4 N-62-5 N-62-6 Internal and External Valve Items, Section III, Division 1, Class 1, 2 and 3 Line Valves The Code Case requires Class 1 and Class 2 valve manufacturers to meet the provisions of Section III, Article NCA-4000, and Class 3 valve manufacturers should also meet the provisions of Article NCA-4000. 7/18/85 9/5/85 7/24/89 12/11/89 5/11/94 N-71-7 (1644-7) N-71-8 (1644-8) Additional Materials for Component Supports, Section III, Division 1, Subsection NF, Class 1, 2, 3 and MC Component Supports The maximum measured UTS of the component support material should not exceed 170 ksi because of the susceptibility of high-strength materials to brittleness and stress-corrosion cracking.