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:
with a combined operating license under 10 CFR Part 52, or a plant that receives its operating license after October 22, 2015. 7/13E N-660 Risk-Informed Safety Classification for Use in Risk-Informed Repair/Replacement Activities, Section XI, Division 1 This Code Case must be applied only to ASME Code Classes 2 and 3 and non-Code Class pressure-retaining components and their associated supports. 7/23/02 N-662-1 Alternative Repair/Replacement Requirements for Items Classified in Accordance with Risk-Informed Processes, Section XI, Division 1 This Code Case must be applied only to ASME Code Classes 2 and 3 and non-Code Class pressure-retaining components and their associated supports. (Note: This condition is identical to condition on the use of Code Case N-662 in RG 1.147, Revision 16). 7/15/11 N-666-1 Weld Overlay of Class 1, 2, and 3 Socket Welded Connections, Section XI, Division 1 A surface examination (magnetic particle or liquid penetrant) must be performed after installation of the weld overlay on Class 1 and 2 piping socket welds. Fabrication defects, if detected, must be dispositioned using the surface examination acceptance criteria of the construction code identified in the repair/replacement plan. (Note: The NRC unconditionally approved Code Case N-666 in RG 1.147, Revision 17, issued August 2014.) 3/13/12 N-695-1 Qualification Requirements for Dissimilar Metal Piping Welds Section XI, Division 1 Examiners qualified using the 0.25 RMS error for measuring the depths of flaws using Code Case N-695-1 are not qualified to depth-size inner-diameter (ID) surface-breaking flaws greater than 50-percent through-wall in dissimilar metal welds 2.1 inches or greater in thickness. If an examiner qualified using Code Case N-695-1 measures a flaw as greater than 50-percent through-wall in a dissimilar metal weld from the ID, the flaw shall be considered to have an indeterminate depth. 0/15E N-696-1 Qualification Requirements for Mandatory Appendix VIII Piping