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:
and their supports for water-cooled nuclear power plants. RG 1.193 lists the ASME Code Cases that the NRC determined to be unacceptable. ASME publishes the Code Cases quarterly in supplements to each edition. To assist users, new and revised Code Cases are shaded in grey to distinguish them from those approved in previous versions of this guide. For Code Cases previously listed in this guide, the third column of Table 1 lists the dates of ASME approvals. For new or revised Code Cases, the third column of Table 1 lists the supplement and edition in which each Code Case was published (e.g., “5/17E” means Supplement 5 to the 2017 Edition of the ASME BPV Code). Table 1. Acceptable Section III Code Cases CODE CASE NUMBER TABLE 1 ACCEPTABLE SECTION III CODE CASES DATE OR SUPPLEMENT/ EDITION N-4-13 Special Type 403 Modified Forgings or Bars, Section III, Division 1, Class 1 and CS 2/12/08 N-60-6 Material for Core Support Structures, Section III, Division I 12/6/11 N-131-1 (1759-1) Material for Internal Pressure Retaining Items for Pressure Relief Valves, Section III, Division 1, Class 1, 2, and 3 2/3/03 N-133-3 Use of SB-148 Alloys 952 and 954, Section III, Division 1, Class 3 2/3/03 N-154-1 Projection Resistance Welding of Valve Seats, Section III, Division 1, Classes 1, 2, and 3 2/3/03 N-205 Use of Ductile Iron SA-395, Section III, Division 1, Class 3 2/25/02 N-249-17 Additional Materials for Subsection NF, Classes 1, 2, 3, and MC Supports Fabricated without Welding, Section III, Division 1 4/10/18 N-284-4 Metal Containment Shell Buckling Design Methods, Class MC, TC, and SC Construction, Section III, Divisions 1 and 3 10/8/12 N-315 Repair of Bellows, Section III, Division 1 2/3/03 N-319-3 Alternate Procedure for Evaluation of Stresses in Butt Welding Elbows in Class 1 Piping, Section III, Division 1 2/3/03 N-351-1 Use of Standard Subsize Charpy V-Notch Impact Specimens, Section III, Division 1; Section III, Division 2; Section III, Division 3 3/21E N-369 Resistance