Pressure safety (relief) valve design (B.D. Case)
Pressure safety (relief) valve design (B.D. Case)
(OP)
Hi every Body,
For design of a PSV, four cases are always considered:
1)Fire, 2)Power Failure (P.F.), 3)Cooling Water Failure (C.W.F.) and 4)Blow Down (B.D.).I'm realised on the cases of Fire, P.F. and C.W.F. But I don't know what B.D. does mean in P.S.V. design? Would you please explain?
For design of a PSV, four cases are always considered:
1)Fire, 2)Power Failure (P.F.), 3)Cooling Water Failure (C.W.F.) and 4)Blow Down (B.D.).I'm realised on the cases of Fire, P.F. and C.W.F. But I don't know what B.D. does mean in P.S.V. design? Would you please explain?





RE: Pressure safety (relief) valve design (B.D. Case)
This could be either gas accumulation or liquid overfilling.
In both cases you assume the normal vessel outlet is blocked and the pressure source control valve is 100% open.
People may argue this is a double contingency.
But consider someone trying to startup the equipment and the operator forgot to open the manual outlet valves.
RE: Pressure safety (relief) valve design (B.D. Case)
RE: Pressure safety (relief) valve design (B.D. Case)
RE: Pressure safety (relief) valve design (B.D. Case)
We are not going to guess when all you have to do is tell us what is the source/reference where you have found this "blowdown" term...Check the definition into it.
"We don't believe things because they are true, things are true because we believe them."