Document: 10 CFR Part 50
Document ID: cfc9c7b0-bbcd-4774-97ce-900cbc760408
Document Type: cfr
Title: Codes and standards.
Source: 10 CFR Part 50
Source URL: https://www.ecfr.gov/current/title-10/part-50/section-50.55a
Revision Date: 
Chapter: 
Section ID: 50.55a
CFR Part: 50
CFR Title: 10

Content:
.org/findstds/errata/ ). ( 3 ) U.S. Nuclear Regulatory Commission (NRC): Public Document Room, 11555 Rockville Pike, Rockville, Maryland 20852; telephone: 1-800-397-4209; email: pdr.resource@nrc.gov ; https://www.nrc.gov/reading-rm/doc-collections/reg-guides/ . The use of code cases listed in the NRC regulatory guides in paragraphs (a)(3)(i) through (iv) of this section is acceptable with the specified conditions in those guides when implementing the editions and addenda of the ASME BPV Code and ASME OM Code incorporated by reference in paragraph (a)(1) of this section. The NRC report in paragraph (a)(3)(v) of this section is acceptable as specified in the conditions when implementing code cases listed in the NRC regulatory guides in paragraphs (a)(3)(i) through (iii) of this section. ( i ) NRC Regulatory Guide 1.84, Revision 40. NRC Regulatory Guide 1.84, Revision 40, “Design, Fabrication, and Materials Code Case Acceptability, ASME Section III,” issued March 2024, with the requirements in paragraph (b)(4) of this section. ( ii ) NRC Regulatory Guide 1.147, Revision 21. NRC Regulatory Guide 1.147, Revision 21, “Inservice Inspection Code Case Acceptability, ASME Section XI, Division 1,” issued March 2024, which lists ASME Code Cases that the NRC has approved in accordance with the requirements in paragraph (b)(5) of this section. ( iii ) NRC Regulatory Guide 1.192, Revision 5. NRC Regulatory Guide 1.192, Revision 5, “Operation and Maintenance Code Case Acceptability, ASME OM Code,” issued March 2024, which lists ASME Code Cases that the NRC has approved in accordance with the requirements in paragraph (b)(6) of this section. ( iv ) NRC Regulatory Guide 1.262, Revision 0. NRC Regulatory Guide 1.262, Revision 0, “ASME Code Cases Approved for Use Without Conditions,” issued July 2025, which lists ASME Code Cases that the NRC has approved in accordance with the requirements in paragraphs (b)(4) , (5) , and (6) of this section. ( v ) NUREG-2228.