I have a SS 304 tank with 2" NPT plugs closing inspection ports. They have a leaking problem due to temp. cycling. Is seal welding allowed by CODE? ASME tank. Is it allowed on piping in hydrcarbon service? I am assuming that seal welding is just welding over the treads sort of like a SW.
Is anyone familiar with the code implications of welding over threads as a means of leak control? It obviuosly limits reuse but I have seen it done. I have an application with a SS tank with 2" inspection ports that are a problem. The pressure is 550PSI and the temperature cycles from 20°C to...
