API 650 mechanically-anchored tanks plumbness

API 650 external floating roof storage tanks are generally called external floating roof API 650 mechanically-anchored tanks tanks, which means that the storage tanks are externally open tanks without a dome design, and are equipped with vertical floating roofs. API 650 external floating roof storage tanks are usually used for large More than 20,000 cubic meters of open steel API 650 mechanically-anchored tanks storage tanks for storing volatile petroleum products such as crude oil, gasoline, kerosene, etc.

Density of API 650 mechanically-anchored tanks Liquid Stored
The density of the liquid stored shall be its maximum density within the range of design temperatures, but no less than 29.3 lbf/ft3 for methane, 34.21 lbf/ft3 for ethane, and 35.5 lbf/ft3 for ethylene.
Design Metal Temperature
The design metal temperature of each component exposed to the liquid or vapor being stored shall be the lower of the temperatures specified as follows: The design metal temperature of the components of the API 620 single-wall tank or the inner tank of a double-wall tank shall be the minimum temperature to which the tank contents shall be refrigerated, including the effect of subcolony at reduced pressure.

Usually, the soil resistance of the foundation should be considered before the design and construction of API 650 mechanically-anchored tanks. The soil endurance in the API 650 mechanically-anchored tanks construction area plays a decisive role in the basic cost of the tank. In areas with high soil resistance, not only the cost of foundation treatment can be greatly reduced, but also the ratio of height to diameter of storage tank can be obtained. Therefore, the investment cost of the API 650 mechanically-anchored tanks can be greatly saved in the area with large soil resistance.

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