API standard 650 ground supported flat-bottom tanks design internal pressure
The effect of air pressure on the API standard 650 ground supported flat-bottom tanks tank walls of the API 650 tank must be considered when the design pressure is greater than 2 kPa.The fixed point method can be used to design the tank wall of atmospheric or micro internal pressure API standard 650 ground supported flat-bottom tanks storage tank.
API standard 650 ground supported flat-bottom tanks any joints between the adjacent sections of stiffening rings, as shown in Figure R-1, shall be made so that the required moment of inertia of the combined ring-shell section is provided. Weld joints between adjacent sections shall be made with full-thickness and full-penetration butt-welds. Stiffening-ring butt-welds may employ metal backing strips. Backing strips and the associated welding shall be made in a manner that provides a smooth contour in the rat hole and all other weld joints ends. All weld passes shall be started at the rat hole.
Generally, the building area temperature of the API standard 650 ground supported flat-bottom tanks should be considered before the tank design and construction. The temperature in the API standard 650 ground supported flat-bottom tanks building area is closely related to the evaporation loss, energy loss, storage tank materials and the selection of detection instruments, or has a direct impact on the storage cost of the storage liquid. For the same medium, the higher the air temperature and the longer the duration, the higher the material temperature in the API standard 650 ground supported flat-bottom tanks, the higher the corresponding pressure and the more volatile loss.
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