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:
gging criteria necessary for staff approval of the repair method). In addition, if the user plans to “reconcile,” as described in Footnote 2, the user must perform the reconciliation in accordance with the 1995 Edition and 1996 Addenda of the ASME Code, Section XI, IWA-4200. 4/19/02 N-576-2 Repair of Class 1 and 2 SB-163, UNS N06600 Steam Generator Tubing, Section XI, Division 1 Note: Steam generator tube repair methods require prior NRC approval through technical specifications. This Code Case does not address certain aspects of this repair (e.g., the qualification of the inspection and plugging criteria necessary for staff approval of the repair method). 3/16/12 RG 1.147, Rev. 19, Page 14 CODE CASE NUMBER TABLE 2 CONDITIONALLY ACCEPTABLE SECTION XI CODE CASES CONDITION DATE OR SUPPLEMENT/ EDITION N-583 Annual Training Alternative, Section XI, Division 1 (1) Supplemental practice shall be performed on material or welds that contain cracks or by analyzing prerecorded data from material or welds that contain cracks. (2) The training must be completed no earlier than 6 months prior to performing ultrasonic examinations at a licensee’s facility. 2/14/03 N-593-2 Alternative Examination Requirements for Steam Generator Nozzle to Vessel Welds, Section XI, Division 1 (1) Essentially 100 percent (not less than 90 percent) of the examination volume A-B-C-D-E-F-G-H must be inspected. (Note: This condition is identical to the condition on the use of Code Case N-593 in RG 1.147, Revision 16.) (2) The examination volume specified in Section XI, Table IWB-2500-1, Examination Category B-D, must be used for the examination of steam generator nozzle-to-vessel welds at least once before using the reduced examination volume allowed by Code Case N-593-2. 11/8/11 N-597-3 Requirements for Analytical Evaluation of Pipe Wall Thinning, Section XI (1) The use of Code Case N-597-3 for any degradation mechanisms other than flow-accelerated corrosion is not authorized unless an