Document: NRC Regulatory Guide
Document ID: a4944d20-ef6e-480b-a45d-14425bedd2e5
Document Type: regulatory_guide
Title: ASME Code Cases Not Approved for Use (Rev. 8)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2219/ML22196A065.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.193
CFR Part: 
CFR Title: 

Content:
ion XI, Appendix VIII, Supplement 11, requires a personnel performance qualification as part of the procedure qualification. The detection acceptance criteria in the Code Case do not require personnel performance qualification as part of the procedure qualification. Personnel qualification is necessary to validate the effectiveness of the procedure qualification. b. The minimum grading unit is 1.0 inch in the circumferential direction. However, the acceptance tolerance is a 0.75-inch RMS error. Therefore, the length-sizing acceptance criteria do not adequately prevent the use of testmanship rather than skill to pass length-sizing tests. Note: The NRC unconditionally approved Code Case N-653-2 in RG 1.147. 9/7/01 N-691 Application of Risk-Informed Insights to Increase the Inspection Interval for Pressurized Water Reactor Vessels, Section XI, Division 1 A response to the NRC staff’s request for additional information has not yet been received and therefore, insufficient information has been provided for the staff to make a determination relative to the acceptability of this Code Case. 11/18/03 N-711 Alternative Examination Coverage Requirements for Examination Category B-F, B-J, C-F-1, C-F-2, and R-A Piping Welds, Section XI, Division 1 The Code Case would permit each licensee to independently determine when the achievement of a coverage requirement is impractical and when ASME Code-required coverage is satisfied. As a result, application of the Code Case for similar configurations at different plants could result in potentially significant quantitative variations. Furthermore, application of the Code Case is inconsistent with the NRC’s responsibility for determining whether examinations are impractical and eliminates the NRC’s ability to take exception to a licensee’s proposed action and to impose additional measures, where warranted, in accordance with 10 CFR 50.55a(g)(6)(i). Note: The NRC conditionally approved Code Case N-711-1 in RG 1.147. 1/5/06 N-713