API Std 650 petroleum storage tanks tack weld
The establishment of a correct method for evaluating the life of API Std 650 petroleum storage tanks requires the preparation of criteria related to the strength and cracks of API Std 650 petroleum storage tanks, mechanical damage mechanisms, corrosion mechanisms, and mathematical models of fatigue crack growth, etc., which are compiled into computer programs. In the process of programming the program, it is required to select the operating parameters, plates, reinforcement accessories, metal properties, corrosion levels, mechanical damage defects and other data of the oil storage tank under various conditions.
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.
API 650 petroleum storage tank basic knowledge, storage tank concept and use: API Std 650 petroleum storage tanks storage equipment for storing crude oil, gasoline, kerosene, petroleum and various non-volatile chemicals, API 650 petroleum storage tank is a storage and transportation system facility, oil refining, chemical industry An important part of the device.
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The company is mainly engaged in API Std 650 petroleum storage tanks steel plates manufacturing and deep processing, sales and distribution. It is committed to building a complete modern steel purchase and sale network. Here we would like to express our sincere gratitude to our old and new friends who have always given care, support, affirmation and help, and sincerely hope to establish a long-term cooperative relationship with them for mutual benefit, win-win and common development, and work API Std 650 petroleum storage tanks together for a better tomorrow.
