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:
RC, the editions, the supplement numbers, and the numerical listing of Section III Code Cases in each supplement. Appendix B to this guide lists all current Section III Code Cases and table where each code case is listed. The following five tables list the Code Cases addressed by this RG: a. Table 1, “Acceptable Section III Code Cases,” lists Code Cases that are acceptable to the NRC for application in the design and construction of light-water-cooled nuclear power plants. b. Table 2, “Conditionally Acceptable Section III Code Cases,” lists Code Cases that are acceptable as long as they are used with the identified conditions (i.e., the Code Case is generally acceptable; however, the NRC has determined that requirements in the Code Case, which are alternative requirements to the BPV Code, must be supplemented to provide an acceptable level of quality and safety). c. Table 3, “Annulled Unconditionally Approved Section III Code Cases,” lists Code Cases that have been annulled by ASME. d. Table 4, “Annulled Conditionally Acceptable Section III Code Cases,” lists Code Cases that the NRC found to be acceptable as long as the licensee used them with the identified conditions; however, they were subsequently annulled by ASME. e. Table 5, “Section III Code Cases That Have Been Superseded by Revised Code Cases on or after July 1, 1974,” lists Code Cases that have been superseded through revision. 1 ASME Section III, Division 2 Code Cases are addressed in RG 1.136. Code Cases that pertain to Section III, Division 3 and Division 5 are addressed in new RGs currently under development. DG-1405, Page 7 1. Acceptable Section III Code Cases The NRC finds the Code Cases listed in Table 1 to be acceptable for application in the design and construction of components 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