Storage vessel

Storage vessel means any tank, reservoir, or container used for the storage of petroleum liquids, but does not include:
(1) Pressure vessels which are designed to operate in excess of 15 pounds per square inch gauge without emissions to the atmosphere except under emergency conditions,
(2) Subsurface caverns or porous rock reservoirs, or
(3) Underground tanks if the total volume of petroleum liquids added to and taken from a tank annually does not exceed twice the volume of the tank.

Source

40 CFR § 60.111

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Scoping language

As used in this subpart, all terms not defined herein shall have the meaning given them in the Act and in subpart A of this part.

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