Design and construction requirements for API 650 SUG II tanks

The foundation design of the API 650 SUG II tanks should meet the requirements of foundation stability and deformation, that is, the API 650 SUG II tanks foundation should not be crushed and the uneven settlement value of the foundation should be within the allowable range. The uneven settlement of the storage tank foundation should be specified in the design process of the safe allowable range, because excessive uneven settlement will reduce the safety of the API 650 SUG II tanks and cause distortion and deformation of the tank wall and bottom plate.

Preheating should be performed by heating and maintaining this heat in appreciable lengths of the joint to be welded, preferably using a strip burner with a mild flame rather than a harsh flame such as that from a cutting torch. Electrical strip heaters are available and have been found to be satisfactory. The preheat of 300°F should be checked with a temperature-sensitive crayon, or similarly accurate means, so that the steel 4 in. (or four times the API 650 SUG II tanks plate thickness, whichever is greater) on each side of the joint will be maintained at the minimum preheat temperature. Ring burners or heaters are recommended for nozzle and manway welds. At no time during the welding should the base metal fall below a temperature of 300°F.

Supply covers for API 650 SUG II tanks connections specified with the service covers remaining in place following tests. For API 650 tank connections not specified to be supplied with service covers, the test covers may be removed after testing.

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The boiler steel plates are among our main products. Other than standard size boiler steel plates, we also provide API 650 SUG II tanks cutting, bending and so on processing to change plate size and shape according to your requirements. Welcome to consult us about API 650 SUG II tanks ASTM A204 grade B properties, SA 516 gr 70 temperature range, ASTM A285 grade C chemical composition, boiler steel price and so on questions and ask for offer.