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:
is not required. 1/1/79 N-116 (1734) Weld Design for Use for Section III, Division 1, Class 1, 2, 3 and MC Construction of Component Supports If the configuration of Figure 1 of the Code Case is used for Class 1 and MC component supports, full-penetration welds should be used. The application of the configuration shown in Figures 2 and 3 should be restricted to the welding of cans for spring encapsulation in spring hangers. In Figure 3, the length of the leg of the fillet weld adjacent to the plate should be equal to the thickness of the exposed edge of the plate. In addition, the leg of the fillet weld adjacent to the shell should be equal to the thickness of the exposed end of the shell. 1/1/78 N-146-1 (1780-1) Hydrostatic Testing and Stamping of Components, Section III, Division 1, Construction On a generic basis, the application of the Code Case is limited to pumps and valves. Application to other components should be treated on a case-by-case basis. Each licensing application in which the Code Case is to be used should contain information showing that, as a minimum, the closure fixture will impose loads that result in stresses equal to or greater than those induced during the hydrostatic test of a complete pump assembly. A closure fixture for the part being tested that is similar in size and shape to the actual mating part is considered adequate to impose these loads. It is not intended that the hydrostatic testing simulate piping reaction loadings. 1/1/82 N-175 (1818) Welded Joints in Component Standard Supports, Section III, Division 1 That portion of the unwelded housing that is limited to 90 degrees maximum should include a minimum of two sectors that are uniform in length. 7/1/79 N-199 Intervening Elements, Section III, Division 1, Classes 1, 2, 3, and MC Component Construction The applicants should provide information in the referencing safety analysis report that demonstrates that all intervening elements have been designed in compliance with the