Document: NRC Regulatory Guide
Document ID: a1541707-8144-409c-8842-4ea7d4b8ef4e
Document Type: regulatory_guide
Title: 10/2019 (Rev. 19)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1912/ML19128A244.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.147
CFR Part: 
CFR Title: 

Content:
the ASME Code. Finally, Appendix C to this guide lists all current Section XI Code Cases. The following five tables list the Code Cases addressed by this RG: a. Table 1, “Acceptable Section XI Code Cases,” lists the Code Cases that are acceptable to the NRC for implementation in the ISI of light-water-cooled nuclear power plants. b. Table 2, “Conditionally Acceptable Section XI Code Cases,” lists the 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 the 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 XI Code Cases,” lists ASME-annulled Code Cases that the NRC previously determined to be fully acceptable. d. Table 4, “Annulled Conditionally Acceptable Section XI 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 e. Table 5, “Section XI Code Cases That Have Been Superseded by Revised Code Cases,” lists Code Cases that have been superseded through revision. RG 1.147, Rev. 19, Page 7 1. Acceptable Section XI Code Cases The NRC determined that the Code Cases listed in Table 1 are acceptable for application in licensee Section XI ISI programs. ASME published the 2010 Edition of the ASME BPV Code on July 1, 2010. ASME issued an addendum in 2011 but did not issue an addendum in 2012. Beginning in 2013, ASME issues new editions of the BPV Code every 2 years. ASME will continue to publish Code Cases quarterly in supplements to each edition. To assist users, new and revised Code Cases are shaded to distinguish them from those approved in previous versions of this guide. For Code Cases previously listed in this guide, the third column of Table 1