Per API 650 section 5.7.4.2 and 5.7.4.3, certain shell nozzle penetrations require PWHT depending on material group, shell thickness, and nozzle size. When that is the case, "openings...shall be prefabricated into the shell plate or thickened insert plate and the prefabricated assembly shall be...
We're building a hot tank (380F design/300F op) in the place where a similar tank once was. The service is asphalt. Multiple hot tanks in our complex, from sulfur to asphalt, have pipe vents radially through the tank ringwall foundation. None of the Civil guys can tell me much about why they...
Hello, I’ve got a question on over pressuring of a tank. I have a small (app. J, API 650) tank that requires a N2 blanket. According to the company standards, our regulators must fail open in order to keep the blanket. The design condition that I’m getting off of the old valve datasheets is...
My client wants me to repurpose an 40'H x 60'D API tank into a knock out drum and I am having trouble getting started on the slotted center column. The column is a 24" pipe (sched. TBD) with three sections of eight vertical slots to allow the gas escape up the column. I assume there would be...
