By Giornelas
Date 11-25-2018 03:10
Edited 11-25-2018 03:14
Per AWS D1.1 table, 6.1" Visual Inspection Acceptance Criteria", visual criteria for different defects are defined. But, If I consider a repetitive incidental of defects in an assembly, what is the minimum length that I have to consider a defect ( undercut, excessive concavity or porosity) as a Major defect rather than a typical defect? What is the minimal length of the weld which an NCR has to be opened? Is there a classification for "Typical AWS minor finding" on AWS D1.1?
For example in this criteria below, I believe that 6 inches are too much, what should be the reasonable length? 1 inch?? And Why?
Undercut, excessive concavity, or porosity requiring weld repair in excess of 6 inches in length, deposited metal in excess of 50% the weld thickness shall be considered as a Major Repair.