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:
ion 8 updates and supersedes the information in Revision 7. Licensees should not implement the Code Cases from BPV Code, Sections III and XI, listed in Supplements 2 through 7 to the 2019 Edition, and Supplements 0 through 2 to the 2021 Edition and the OM Code Cases listed in the 2022 Edition of the OM Code, that are listed in this guide without prior NRC approval. The following five tables list the Code Cases that this RG addresses: a. Table 1, “Unacceptable Section III Code Cases,” contains Section III, Code Cases that are unacceptable for use by licensees in their Section III design and construction programs1. b. Table 2, “Unacceptable Section XI Code Cases,” contains Section XI, Code Cases that are unacceptable for use by licensees in their Section XI inservice inspection programs. c. Table 3, “Unacceptable OM Code Cases,” contains OM Code Cases that are unacceptable for use by licensees in their inservice testing programs. d. Table 4, “Annulled/Superseded Unacceptable Section III Code Cases,” contains annulled or superseded Section III Code Cases that the NRC previously determined to be unacceptable. e. Table 5, “Annulled/Superseded Unacceptable Section XI Code Cases,” contains annulled or superseded Section XI Code Cases that the NRC previously determined to be unacceptable. 1 Unacceptable Section III, Division 2 Code Cases are addressed in RG 1.136. DG-1408, Page 6 1. Unacceptable Section III Code Cases The NRC determined that the following Section III Code Cases are unacceptable for use by licensees in their Section III design and construction programs. To assist users, new Code Cases are shaded in grey to distinguish them from those listed in previous versions of this guide. CODE CASE NUMBER TABLE 1 UNACCEPTABLE SECTION III CODE CASES SUMMARY DATE OR SUPPLEMENT/ EDITION N-519-1 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. N-519 was