Vessel design pressure query
Vessel design pressure query
(OP)
Hello all,
One of our clients have a very old vessel for which original design documents are not available.
I want to size the suitable relief valve for that vessel but it can’t be possible unless I know the design pressure of the vessel.
Please let me know how to find out design pressure?
If I know the vessel design code [PD5500], do you think it would be possible to find out design pressure?
Thanks in advance
KS
One of our clients have a very old vessel for which original design documents are not available.
I want to size the suitable relief valve for that vessel but it can’t be possible unless I know the design pressure of the vessel.
Please let me know how to find out design pressure?
If I know the vessel design code [PD5500], do you think it would be possible to find out design pressure?
Thanks in advance
KS





RE: Vessel design pressure query
See http://www.eng-tips.com/viewthread.cfm?qid=374741 and similar threads in the boiler and pressure vessel forum.
I don't know where you are or what jurisdiction you come under, but I would be very careful about doing anything with this vessel as it will then be your name on the document and if you're not qualified to do PV design then that is quite dangerous.
Without knowing the materials and the weld test results you might find the design pressure is too low for use.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Vessel design pressure query
Tell the client that in order for you to perform this relief task they must first have a vessel engineer calculate the MAWP. Let the vessel engineer explain exactly what information he needs for this calculation. Once he's done, and supplies you with an MAWP, then you can proceed.
RE: Vessel design pressure query
Note just because it is an old vessel, that does not mean that the vessel has no remaining useful life.