API 520 or API 2000?
API 520 or API 2000?
(OP)
Hi.
I'm trying to check our relief devices to make sure they are sized correctly. We have a pot still and 2 thin film evaporators.
The consultant who previously sized the relief valve and rupture discs used API 2000 which I don't think is correct as that is for storage tanks (I can understand using it if we are just considering an external fire).
Can anyone point me in the right direction?
Thanks
Paul
I'm trying to check our relief devices to make sure they are sized correctly. We have a pot still and 2 thin film evaporators.
The consultant who previously sized the relief valve and rupture discs used API 2000 which I don't think is correct as that is for storage tanks (I can understand using it if we are just considering an external fire).
Can anyone point me in the right direction?
Thanks
Paul





RE: API 520 or API 2000?
So, you are likely correct, API 520 is more applicable. For process equipment rated at atmospheric we typicaly will use the 520 sizing scenarios and methods, with set pressures for devices at 14.9 psig (sometimes lower). Even though PSVs typically aren't V-stamped below 15 psi set pressure, the manufacture will document that they are maunfactured and tested in accordance with ASME code requirements.
RE: API 520 or API 2000?
RE: API 520 or API 2000?
skearse (Chemical) has given you some good guideline.
What is the maximum allowable working pressure (MAWP) of "Thin film evaporators" ? What is the design code for this "evaporator" ?
JoeWong
Chemical & Process Technology