Document: NRC Regulatory Guide
Document ID: 44b58049-ac63-457b-a075-ef162b34cb70
Document Type: regulatory_guide
Title: Materials code case Acceptability - - ASME Section III, Division 1 (Rev. 31)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740365.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.85
CFR Part: 
CFR Title: 

Content:
, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Compo nent Supports Code Case N-249 was acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Footnote 2 of the Code Case should apply to all materials listed in Tables 1, 2, 3, 4, and 5 of the Code Case and should be so indicated on line 5 of the "Reply." N-249-1 05-11-81 06-17-82 Additional Materials for Com ponent Supports Fabricated Without Welding, Section III, Division 1, Subsection NF, Class 1, 2, 3, and MC Compo nent Supports Code Case N-249-1 was acceptable subject to the following condition in addition to those conditions spe cified in the Code Case: Paragraph 7 of the "Reply" should reference the requirements of NF-2600 instead of NF-2800. This is a typographical error in that NF-2800 does not exist. N-249-2 06-17-82 Additional Materials for Sub 02-14-83 section NF Class 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 N-249-3 02-14-83 02-20-84 N-249-4 02-20-84 09-17-84 Additional Materials for Sub section NF Class 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 Additional Material for Sub section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 The fracture toughness requirements as listed in Code Case N-249-4 apply only to piping supports and not to Classes 1, 2, and 3 component supports. The frac- ture toughness of Classes 1, 2, and 3 component sup ports should be characterized in accordance with para graph 5.3.4 of the USNRC Standard Review Plan (NUREG-0800) or on a case-by-case basis. N-249-5 09-17-84 Additional Material for Sub 04-08-85 section NF, Classes 1, 2, 3, and MC Component Supports Fab ricated Without Welding, Sec tion III, Division 1 The fracture toughness requirements as listed in Code Case N-249-5 apply only to piping supports and not to Classes 1, 2, and 3 component supports. The frac ture