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:
, “Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition” (SRP) (Ref. 17), or on a case-by-case basis. 9/17/84 4/8/85 N-249-6 N-249-7 N-249-8 N-249-9 N-249-10 N-249-11 N-249-12 N-249-13 Additional Material for Subsection NF, Classes 1, 2, 3, and MC Component Supports Fabricated without Welding, Section III, Division 1 The fracture toughness requirements apply only to piping supports and not to Classes 1, 2, and 3 component supports. The fracture toughness of Classes 1, 2, and 3 component supports should be characterized in accordance with SRP Section 5.3.4, or on a case-by-case basis. The following should be added to Paragraph 5 of the Code Case: “For these cases, the owner should demonstrate that (1) the impact test results for the material meet Code requirements and (2) the material is not subject to stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or assembly stresses and it does not experience frequent sustained loads in service.” 9/5/85 12/5/85 12/16/86 5/6/89 5/13/91 2/12/93 5/11/94 12/8/00 N-249-14 Additional Materials for Subsection NF, Class 1, 2, 3, and MC Component Supports Fabricated without Welding, Section III, Division 1 (1) The fracture toughness requirements apply only to piping supports, not to Class 1, Class 2, and Class 3 component supports. (2) The following should be added to Paragraph (e) of the Code Case: “For these cases, the owner must demonstrate that (1) the impact test results for the material meet Code requirements and (2) the material is not subject to 2/20/04 DG-1405, Page 44 CODE CASE NUMBER TABLE 5 CODE CASES THAT HAVE BEEN SUPERSEDED BY REVISED CODE CASES ON OR AFTER JULY 1, 1974 REVISION DATE stress-corrosion cracking because a corrosive environment is not present and because the component that contains the material has essentially no residual stresses or