Definition(s)
Storage Tank or Storage Vessel
Fixed tank or vessel that is not part of the processing unit in petrochemical facilities, refineries, gas plants, oil and gas production facilities, and other facilities. cf. process tank (3.57). NOTE These tanks or vessels are often located in tank farms.
Source: API STD 521, Pressure-relieving and Depressuring Systems, Fifth Edition, January 2007 (Addendum May 2008). Global Standards