Document: NRC Regulatory Guide
Document ID: a4944d20-ef6e-480b-a45d-14425bedd2e5
Document Type: regulatory_guide
Title: ASME Code Cases Not Approved for Use (Rev. 8)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2219/ML22196A065.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.193
CFR Part: 
CFR Title: 

Content:
“Ks=σha.”  -1713.2.1, (i) The headings for (b) and (c) should include the words “In-Plane.” (ii) In (b) “Axial Compression Plus Shear,” “σθ” should be changed to “σφ.” (2) Applicants intending to use Code Case N-284-1 shall submit a request to the NRC staff for its review and approval on a plant-specific basis. (4) The rules that apply to the evaluation of the buckling and instability of containment shells for Section III, Division 3, are under development. Currently, use of Code Case N-284-1 by licensees for storage canisters and transportation casks is permissible provided it has been reviewed and approved by the NRC. Note: The NRC unconditionally approved Code Case N-284-4 in RG 1.84. N-483-2 N-483-3 Alternative Rules to the Provisions of NCA-3800, Requirements for Purchase of Material, Section III, Divisions 1 and 3 The Code Case lacks sufficient detail to ensure that the supplied material is as represented by the Certified Material Test Report. 5/7/99 2/25/02 Annulled 8/4/17 N-510 N-510-1 Borated Stainless Steel for Class CS Core Support Structures and Class 1 Component Supports, Section III, Division 1 No technical basis was provided for expanding the Code Case to include borated stainless steel Types 304B, 304B1, 304B2, and 304B3. A considerable amount of information was required to support the types presently contained in the Code Case. The revised Code Case would permit borated stainless steel to be used for component supports within the reactor vessel. The technical basis to support the Code Case only addresses the use of these materials as component supports in spent fuel racks and transportation casks. 12/9/93 8/14/01 Annulled 5/2/18 N-519 Use of 6061-T6 and 6061-T651 Aluminum for Class 1 Nuclear Components Code Case N-519 only applies to one U.S. Department of Energy aluminum vessel. Annulled 2/3/03 N-595 N-595-1 N-595-2 N-595-3 N-595-4 Requirements for Spent Fuel Storage Canisters, Section III, Division 1 Regulatory