API Std 650 cylindrical welded storage tanks connections with adjacent structures
The API Std 650 cylindrical welded storage tanks must go through strict inspection before putting into use. Inspection of plate groove of API Std 650 cylindrical welded storage tanks, vertical oil tank: After finishing the groove processing of oil tank plate, it is necessary to conduct dye penetrant inspection on the groove. This process is mainly aimed at the hard damage of groove in the machining process and the defects of the plate itself. If any defect is found, it shall be processed again until the defect disappears.
The pressed-steel, round manhole with a 20-in. inside diameter shown in Figure F-8 is located in API 620 crude oil tank solid plate in spherical portion of a torispherical roof on a cylindrical storage tank 72 ft in diameter. The internal pressure, Pg, on the underside of the roof is 15 lbf/in.2 gauge. The thickness, t, of the roof plate required by 5.10.3 for the spherical portion of the roof is 1/2 in., which is exactly the thickness provided. No corrosion allowance is required. The materials in the oil tank roof plates and manhole frame conform to ASTM A283 Grade C steel; the main joints in the roof are double-welded butt joints, spot radiographed in accordance with 7.16 and 7.17.
The API 650 is the American standard for welded flat-bottomed vertical API Std 650 cylindrical welded storage tanks storage tanks. This standard dictates tank design, manufacture, welding, inspection and installation requirements.
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Our products have perfect after-sales system to protect the interests of customers. At the same time, we can according to API Std 650 cylindrical welded storage tanks customer's requirements, processing requirements, cutting technical requirements, etc., to develop detailed solutions for customers, so as to make customers 100% satisfied. If you have any requirements and needs, please contact us in time.
