API standard 650 cylindrical liquid-storage tank repairs to welds
API 650 "welded storage tanks" API standard 650 cylindrical liquid-storage tank is a standard developed and issued by the American Petroleum Institute (API), which specifies the minimum requirements for the design, manufacture, installation and inspection of welded storage tanks.
The opening pressure or vacuum of the pressure relief and API standard 650 cylindrical liquid-storage tank vacuum relief valves shall be checked by pumping air above the water level and releasing the pressure and then partially withdrawing water from the tank. After the tank has been emptied of water and is at atmospheric pressure, the anchorage, if provided, shall be rechecked for tightness against the hold-down brackets. Air pressure, equal to the design pressure, shall be applied to the empty tank, and the anchorage, if provided, and the foundation shall be checked for uplift.
Usually, the soil resistance of the foundation should be considered before the design and construction of API standard 650 cylindrical liquid-storage tank. The soil endurance in the API standard 650 cylindrical liquid-storage tank 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 standard 650 cylindrical liquid-storage tank can be greatly saved in the area with large soil resistance.
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