API Std 650 welded storage tanks workmanship

The cone slope of the completed API Std 650 welded storage tanks foundation is 15/1000 for the general foundation and less than 35/1000 for the soft foundation. After the foundation settlement of the storage tank is basically stable, the surface slope must be greater than eight thousandths. The edge of the tank bottom should be more than 0.3 meters higher than the surrounding ground. Above the ground, the tank bottom leakage detection tube should be drawn from the foundation sand cushion and cross the foundation ring wall or the slope protection surface. The circumferential distance should be less than 20 meters, and each API Std 650 welded storage tanks should have at least 4 detection tubes.

The tank 20-in. inside-diameter nozzle shown in Figure F-6 is located in solid plate in the sidewall of a cylindrical storage tank 148 ft in diameter in an area where the thickness of the wall plate, tw, is 11/2 in. A corrosion allowance of 0.10 in. is required on all surfaces of the tank exposed to the stored liquid. The total internal pressure, Pl + Pg, at the center of the opening is 24.9 lbf/in.2 gauge. The thickness of the API Std 650 welded storage tanks wall plate, t, required by 5.10.3 for the latitudinal unit forces, T2, acting at this level is 1.44 in.

Welding certification is regulated by Section 10 of the American Society of Mechanical Engineers (ASME). For both API Std 650 welded storage tanks storage tank API 650, non-destructive inspection is required, but third-party inspection is not required.

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The boiler steel plates are among our main products. Other than standard size boiler steel plates, we also provide API Std 650 welded storage tanks cutting, bending and so on processing to change plate size and shape according to your requirements. Welcome to consult us about API Std 650 welded storage 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.