I do agree that the more you know the better however its not needed. I don't go for that about one code or another. If I qualify to weld plate, vertical up, backing, E-7018 in accordance with AWS D1.1. The test I take to do that same process, position, filler metal is not much different in ASME Sec IX. If I always try to put down sound metal with a given process and filler metal, I don't have to know anything different to complete a production weld that meets the requirements of another code. Sure I may have to test again, but I don't have to study up.
A 2" pipe welds up the same regardless of what code. I could take one test and if the inspector doocumented properly and used the proper test assy and tested accordingly, I could qualify for ASME Sec IX, AWS D14.6, AWS D1.1 all at once with only one test. Provided all requirements of each applicable code were met.
The welding trade has such a varied degree of skill and knowledge level. I think one can sometimes help with shortcomings in the other but if you don't have the skill you just plain can't weld. If you don't have the knowledge about the code etc. That doesn't mean you can't weld.
I have watched a man cap a 6" sch 80 pipe with 1/8" E-7018 from bottom dead center without looking. He struck the arc, welded for about 2 seconds and flipped his hood up and looked away. If I needed a sound weld made in any position, regadrdless of the code, he could do it and had never read the code.
I myself ain't that slick. Luckily I know a little about what is acceptable and what isn't. If the inspector goes overboard on the code. I explain to him where to find the acceptance criteria and if some other acceptance criteria applies, for him to explain it to me so I can adjust to comply. (Egos being what they are, this has not always been a good decision on my part)
I think that a certain amount of training in the technical portion of welding should be taught to all welders taking formal training. And as a professional, one should do something to improve their skill or knowledge. Sometimes anyone that can strike an arc shows up on the job and passes the test.
Welders don't have to prove use of a process. That is normally the burden of the manufacturer who employs such welders.
If welders were to certify to have a given knowledge of the code, then maybe it would be good that anyone writing a project specification be able to perform all tasks within that specification. I don't think that is practical.
Thanks for participating and sorry for rambling.
Gerald Austin Gerald Austin
Iuka, Mississippi