John,
Thanks,yes, I am also used to annual testing elswhere too,especially for offshore. The location is onshore Korea, and its a small Gas/condensate plant used as a gathering point for offshore. The equipment is the usual;slugcatcher,Inlet Separator, Mol Sieves,JT valve,condensate tower,gas...
How often should plant PSV's be checked for re- certification/legal purposes?
Our Plant has been running a year; the PSV were orignally tested in June 03 whilst still in the factory.
Krecian,
WE had a lot of failures initially to do with the power interface cards, cured with an upgrade.
FB devices are more expensive than 4-20mA ,perhaps less units manufactured, so far, has something to with it.We found the part required for a device were so expensive it was better to order...