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Thanks everyone. The application is a 3" ANSI flange with a 1" Sch 80 pipe sticking through it and a smaller flange welded to the end. The smaller flange on the end is where this weld size is called out. The application is a sampling probe for use in an ASME B31.3 system for a customer of...

I am having a disagreement with a fellow AWS CWI. I see his arguement, but every other welding engineer I have ever worked with has taken my stance. I'm just trying to understand if my view point is how the Standard intends it to be read, or if the other CWI is correct. Background: Simple...

I am a Welding Engineer and a self-proclaimed "Code Junkie". I love working my way through the ASME, ISO, and AWS codes/standards (I'm weird, I know). At work the other day, one of the shop floor supervisors asked, why do we need to qualify our welders. I tried giving them the canned "Because...

With GTAW, Arc Voltage is directly related to the arc gap. Neither are Essential Variables, but Voltage is related to Heat Input which is a "Supplementary Essential Variable". That means that it only becomes an essential variable when other sections of code specify notch-toughness tests...

I am a welding Engineer responsible for creating and maintaining WPS's and WPQ's to ASME Section IX, ISO, and METI welding standards. Our company primarily performs GTAW processes, however we also use EBW, LBW, and RW in the manufacturing of our products. We used to perform all of our weld...

Don't get lost in the differences between Procedure and Performance Qualifications. QW451 deals with Procedure Qualifications, QW452 deals with Welder Performance Qualifications. As "metengr" pointed out earlier in this thread, QW451.4 allows for any size fillet weld to be made with a Procedure...