PSV Selection
PSV Selection
(OP)
Hi All,
I'm reviewing fuel gas system documents that includes, KOD, Filter separators and pressure reducing valves. contractor engineering team has selected fire case psv for KOD and filter separators while fuel gas is natural dry gas with dew point -30 C. I feel that contract engineering team don't have idea how to select psv case. Can anyone put more light on this issue and how discuss with contractor to change fire case to blocked case.
Best Regards
I'm reviewing fuel gas system documents that includes, KOD, Filter separators and pressure reducing valves. contractor engineering team has selected fire case psv for KOD and filter separators while fuel gas is natural dry gas with dew point -30 C. I feel that contract engineering team don't have idea how to select psv case. Can anyone put more light on this issue and how discuss with contractor to change fire case to blocked case.
Best Regards
RE: PSV Selection
Good Luck,
Latexman
RE: PSV Selection
*** Per ISO-4126, the generic term
'Safety Valve' is used regardless of application or design ***
*** 'Pressure-relief Valve' is the equivalent ASME/API term ***
RE: PSV Selection
RE: PSV Selection
RE: PSV Selection
Thanks for your input. I know that operating company engineers will drive the contract company engineers to complete the task as per company operating and control philosophy. anyhow your inputs give me more clarity for further communication with contract company.
RE: PSV Selection
Does the blocked in case exceed the MAWP of the vessels??
If not then the fire case (also blocked in) becomes that is actually the design case
We don't know as you haven't provided any details.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: PSV Selection
RE: PSV Selection
What about a pool fire caused by spilled combustible liquid accumuilated in KOD and separators? Do those have liquid level measurement or control means?
RE: PSV Selection
RE: PSV Selection
Can pressure reducing valve fails wide open be a scenario?
If level instrument fails wide open and you get FG blow through, is that a scenario? Perhaps to downstream equipment.
Good Luck,
Latexman