How to limit the release of liquid contents from API Std 650 aluminum storage tanks

Oil tank is an important equipment for oil storage. The common API Std 650 aluminum storage tanks is composed of foundation, bottom plate, wall plate, top plate and accessories. The types of oil tank are various, which can be divided according to the characteristics of material, installation position, storage oil, use, appearance, structure and volume of oil tank. The commonly used materials of metal oil tank are stainless steel, carbon steel, alloy steel, etc.

All API Std 650 aluminum storage tanks fillet welds shall consist of a minimum of two passes. The ends of the fillet welds shall be 2 in. from the rat hole, and these welds shall be deposited by starting 2 in. from the rat hole and welding away from the rat hole. An acceptable alternative to stopping fillet welds 2 in. short of the rat hole would be to weld continuously through the rat hole from one side of the stiffener to the opposite side. All craters in fillet welds shall be repaired by back welding.

The API 650 is the American standard for welded flat-bottomed vertical API Std 650 aluminum storage tanks storage tanks. This standard dictates tank design, manufacture, welding, inspection and installation requirements.

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