I understand that all welds need testing, but in most cases it is impossible to have zero untested welds/connections unless you are testing barrel to barrel. In an ideal world there would be no untested welds or flange connections, but that is rarely the reality. The interstate transmission...
My team is working on a pressure test procedure for a 15-mile 6" HDPE natural gas gathering line in the US that has a MAWP of 125 psig, and we've run into a few roadblocks that I wanted to get some input on. My team has a background in carbon steel interstate transmission lines, not "low"...