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:
Code Case, must be applied to the entire primary plus secondary stress range during the anneal. 8/20/02 N-561-2 Alternative Requirements for Wall Thickness Restoration of Class 2 and High Energy Class 3 Carbon Steel Piping, Section XI, Division 1 (1) In Paragraph 5(b), for repairs performed on a wet surface, the overlay is only acceptable until the next refueling outage. (2) In Paragraph 7(c), if the cause of the degradation has not been determined, the repair is only acceptable until the next refueling outage. (3) The area where the weld overlay is to be applied must be examined using ultrasonic methods to demonstrate that no crack-like defects exist. (4) Piping with a wall thickness less than the diameter of the electrode shall be depressurized before welding. 1/22/07 N-562-2 Alternative Requirements for Wall Thickness Restoration of Class 3 Moderate Energy Carbon Steel Piping, Section XI, Division 1 (1) In Paragraph 5(b), for repairs performed on a wet surface, the overlay is only acceptable until the next refueling outage. (2) In Paragraph 7(c), if the cause of the degradation has not been determined, the repair is only acceptable until the next refueling outage. (3) The area where the weld overlay is to be applied must be examined using ultrasonic methods to demonstrate that no crack-like defects exist. (4) Piping with a wall thickness less than the diameter of the electrode shall be depressurized before welding. 1/22/07 N-569-1 Alternative Rules for Repair by Electrochemical Deposition of Class 1 and 2 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). In addition, if the user plans to “reconcile,” as described in Footnote 2, the user must perform the reconciliation in accordance