Hello,
We are currently in the process of designing a small vessel (or pipe) (ID: 400 mm, T-T:1700mm) that will be used to collect HC liquids from a pipeline and transfer the liquids to the closed drain. I would like to know if a PSV (i.e fire case) is required in this case for such small vessel which more or less like a pipe. note that the operating pressure is about 0.4 mbarg and the vessel will be installed above ground.
regards,