Method and apparatus for cleaning the interior of an above ground storage tank
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United States of America Patent
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Mar 14, 2017
Grant Date -
Sep 18, 2014
app pub date -
Jun 2, 2014
filing date -
Apr 26, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus and method for cleaning the interior of an above ground storage tank includes a nozzle assembly mounted to a cover on the storage tank sidewall having a horizontally extending wash pipe fixedly and a suction pipe for recirculation of spent fluids. The wash pipe has an interior segment which can be extended to a tank floor and is configured with a bend to extend along the tank sidewall to which is attached a submersible swivel joint fitted with a choked nozzle. The nozzle assembly is attached to a control assembly so that the direction of flow from the nozzle may be manipulated by rotation of the swivel joint from the exterior of the storage tank. The nozzle also may be adjusted so the direction of flow may follow the angle of the tank floor.
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