![]() Above-ground storage tanks (ASTs) differ from underground storage tanks (USTs) in the kinds of regulations that are applied. There are usually many environmental regulations applied to the design and operation of storage tanks, often depending on the nature of the fluid contained within. Storage tanks are often cylindrical in shape, perpendicular to the ground with flat bottoms, and a fixed frangible or floating roof. In the USA, storage tanks operate under no (or very little) pressure, distinguishing them from pressure vessels. In other countries, the term tends to refer only to artificial containers. The usage of the word tank for reservoirs is uncommon in American English but is moderately common in British English. The term can be used for reservoirs (artificial lakes and ponds), and for manufactured containers. Storage tanks are containers that hold liquids, compressed gases (gas tank or in U.S.A "pressure vessel", which is not typically labeled or regulated as a storage tank) or mediums used for the short- or long-term storage of heat or cold. JSTOR ( February 2018) ( Learn how and when to remove this template message)Ĭylindrical fuel storage tank with fixed roof and internal floating roof.Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification.
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