In my experience, I have only seen SA-414G and SA-455 used in air receivers. The small ones are SA-414G, then as the vessels get bigger they use SA-455, then after a certain size SA-516-70 is used.
Awesome, that's not a damage mechanism I had heard of before, thank you. Now that you mention it there would be some water in the form of steam in the gas that enters. This is an acid process process pulp mill and this condenser is attached to the vents of their blow tanks, chips are digested...
There's nothing remarkable about the outside, this vessel sits about 40 feet above the ground on its own structure.
I'm new here, so maybe I don't know how things work. I was just trying to start a dialogue about what could possibly cause this type of damage mechanism. I read through API 571...
Here are some other areas. These are in the HAZ, but still look weird.
https://files.engineering.com/getfile.aspx?folder=65180237-5b6a-49b8-99a3-f18b2c284f71&file=DSCF2320.JPG
I have absolutely no design information (it's at least as old as 2002) for it other than I saw T316, NOT 316L stamped in one of the plates. The spalling is not limited to the HAZ of welds, some of the areas are in the middle of the plate far away from welds. As for the grinding marks, as far as...
What would cause 316 stainless steel to spall? This particular piece of equipment condenses sulfur dioxide vapor into liquid, there are no moving parts and no possibility of impacts. There are several isolated spalled areas/delamination and cracks throughout both in the welds and...
