API standard 650 self anchored flatbottom tanks design requirements

The main advantages of the external floating roof API standard 650 self anchored flatbottom tanks are large storage capacity, suitable for storing more than 10000 cubic meters of crude oil. Compared with the internal floating roof API standard 650 self anchored flatbottom tanks, the production of external floating roof API standard 650 self anchored flatbottom tanks is simple and the steel consumption is less. However, the central drainage system of external floating roof API standard 650 self anchored flatbottom tanks should be installed on the outer floating roof to ensure that the accumulated water can be discharged smoothly in rainy and snowy days, and avoid sinking accident.

The API standard 650 self anchored flatbottom tanks outer tank, which is not in contact with the vaporized liquefied gas, may be of single-welded lap or single-welded butt construction when the thickness does not exceed 3/8 in.; at any thickness, the API 620 oil tank outer tank may be of double- welded butt construction without necessarily having full fusion and penetration. Single-welded joints shall be welded from the outside to prevent corrosion and the entrance of moisture.

The advantages of API 650 floating roof tanks have obvious environmental and economic benefits: in a specific climate environment, according to historical data, the economic value of the API standard 650 self anchored flatbottom tanks floating roof tanks in API 650 due to the reduction of oil and gas volatilization within 3-6 months is equivalent The installation and purchase cost of the API standard 650 self anchored flatbottom tanks inner floating roof means that the cost of the inner floating roof can be recovered within half a year.