Eliminating a PSV
Eliminating a PSV
(OP)
Can a PSV be eliminated if an open path exists to another vessel having a PSV sized for both vessels? The open path is a section of pipe that can easily handle the required relief rate. Pressure drop through pipe would require adjustment of PSV setpoint on the second vessel. Is there a written code reference that allows this? Thanks





RE: Eliminating a PSV
RE: Eliminating a PSV
RE: Eliminating a PSV
I have used that practice in both onshore refineries and offshore platforms. The connecting pipe needs to be sized so it does not violate API RP-520 Part II in terms of non-recoverable losses between the protected vessel and the PSV.