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External floating roof tank (double deck type) An external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate. It consists of an open- topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid. The roof rises and falls with ...
This floating roof rises and falls with the liquid level inside the tank, thereby decreasing the vapour space above the liquid level. Floating roofs are considered a safety requirement as well as a pollution prevention measure for many industries including petroleum refining. Capacity table for horizontal cylindrical storage tank [3]
A fixed roof tank is a type of storage tank, used to store liquids, consisting of a cone- or dome-shaped roof that is permanently affixed to a cylindrical shell. Newer storage tanks are typically fully welded and designed to be both liquid- and vapor-tight. Older tanks, however, are often riveted or bolted, and are not vapor tight.
Common designs for floating concrete structures are the barge or ship design, the platform design (semi-submersible, TLP) as well as the floating terminals e.g. for LNG. Floating production, storage, and offloading systems (FPSOS) receive crude oil from deep-water wells and store it in their hull tanks until the crude is transferred into tank ...
BS 4994:1987 – Specification for design and construction of vessels and tanks in reinforced plastics. British Standards. 1987-06-30. ISBN 0-580-15075-5. "Pressure Vessel Design Case Study". ESR Technology. Archived from the original on 2007-05-12. — a case study of the design process of a cylindrical vessel, using the BS 4994 methodology
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A spar is a marine structure, used for floating oil/gas platforms. Named after navigation channel Spar buoys, spar platforms were developed as an extreme deepwater alternative to conventional platforms. [1] The deep draft design of spars makes them less affected by wind, wave, and currents and allows for both dry tree and subsea production.