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:
case-by-case basis. 1759-1 05-15-78 Material for Internal Pressure (N-131-1) 07-13-81 Retaining Items for Pressure 12-11-81 Relief Valves, Section III, 12-05-84 Division 1, Class 1, 2, and 3 12-05-87 12-03-90 12-03-93 Code Case 1759-1 is acceptable subject to the fol lowing condition in addition to those conditions speci fied in the Code Case: Applicants using this Case should also use Code Case 1711 for the design of pres sure relief valves. cated Without Welding, Section III, Division 1 Code Case N-249-13 is acceptable subject to the following conditions in addition to those conditions specified in the Code Case: The fracture toughness re quirements 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 paragraph 5.3.4 of the USNRC Standard Review Plan (NU REG-0800) or on a case-by-case basis. The following is to be added to paragraph (e) of the Case: For these cases, it should be demonstrated by the owner that (1) the impact test results for the material meet Code re quirements and (2) the material is not subject to stress corrosion cracking by virtue of the fact that (a) a corro sive environment is not present and (b) the component that contains the material has essentially no residual stresses or assembly stresses, and it does not experience frequent sustained loads in service. N-265-1 05-19-85 05-19-88 03-14-91 03-14-94 N-438-3 07-27-92 N-440 02-23-87 12-11-89 12-11-92 Modified SA-487 Castings, Section III, Division 1, Class 1 UNS N08367 Material, Section III, Division 1, Class 2 and 3 Construction Use of 20Cr-18Ni-6Mo (Alloy UNS J93254) Castings, Class 2 and 3 Construction, Section III, Division 1 U N-443-1 03-08-89 High Yield Strength Cr-Mo 04-30-92 Steel, Class 1 Components, Section III, Division 1 N-205 05-15-78 07-13-81 07-13-84 07-13-87 08-14-90 08-14-93 N-246-2 05-25-83 07-30-86 07-30-89 07-27-92 N-249-13 05-11-94 Use of