Document: NRC Regulatory Guide
Document ID: 44b58049-ac63-457b-a075-ef162b34cb70
Document Type: regulatory_guide
Title: Materials code case Acceptability - - ASME Section III, Division 1 (Rev. 31)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740365.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.85
CFR Part: 
CFR Title: 

Content:
epairs for Section III, Division 1 Construction Code Case N-274 was acceptable subject to the fol lowing condition 13 in addition to those conditions spe cified in the Code Case. Paragraph 6 should be expand ed as follows: The ultrasonic examination procedures shall be proven by actual demonstration, to the satisfac tion of the Authorized Nuclear Inspector, that the pro cedures are capable of detecting unacceptable cracks according to Section XI requirements. N-277 03-17-80 Use of Type XM-19 Austenitic 09-17-80 Stainless Steel for Section III, Division 1, Class MC Construction N-295 01-15-81 12-11-81 06-30-82 NCA-1140, Materials, Section III, Division 1 N-296 11-17-80 Welding Material, Section III, 12-01-83 Division 1 Construction N-298 11-17-80 Examination of Component 12-01-83 Supports, Section III, Division 1, Class 1, 2, 3, and MC N-299-1 07-18-85 02-23-87 Use of Nickel-Chromium Molybdenum-Columbium Alloy 625 Forgings, Section III, Division 1, Class 2 and Class 3 Components 12Code Case N-265 was allowed to expire on 1-7-83 because of an ad ministrative error. It was reinstated on 9-1-83 with no technical changes. The Case is, therefore, considered in effect during that period of time. Again, Code Case N-265 was allowed to expire on 12-31-84 (mandatory annulment date). It was reinstated as N-265-1 on 5-19-85. Because of the circumstances and because there were no changes in the Code Case, the NRC considers that this Case was in ef fect during the period of 12-31-84 through 5-19-85. 13The reason for the conditional acceptance of paragraph 6 is to make cer tain that there is a qualified ultrasonic testing procedure capable of de tecting small flaws and differentiating the small flaws from geometric reflectors. This paragraph does not in any way alter the acceptance cri teria as specified in paragraph 3. N-310-1 08-14-81 Certification of Bolting Materi 07-01-82 als, Section III, Division 1, Class 1, 2, 3, MC and CS Code Case N-310-1 was acceptable subject to the