API standard 650 vertical welded storage tanks larger than 50 ft in diameter
API 650 stipulates that an open tank should be provided with a wind-resistant ring to ensure that the API standard 650 vertical welded storage tanks tank body maintains its roundness when subjected to wind. There are no hard and fast rules for vault API 650 storage tanks. It can be determined by comparing the equivalent wall height with the maximum height of the unreinforced tank wall.
The refrigerated tank primary components shall include, but will not be limited to, the following parts of a single-wall tank or of the inner tank API standard 650 vertical welded storage tanks in a double-wall tank: shell plates; bottom plates; knuckle plates; compression rings; and shell manways and nozzles including reinforcement, shell anchors, piping, tubing, forgings, and bolting. Roof nozzles in contact with the refrigerated liquid shall be considered primary components.
The cone slope of the completed API standard 650 vertical welded storage tanks foundation is 15/1000 for the general foundation and less than 35/1000 for the soft foundation. After the foundation settlement of the storage tank is basically stable, the surface slope must be greater than eight thousandths. The edge of the tank bottom should be more than 0.3 meters higher than the surrounding ground. Above the ground, the tank bottom leakage detection tube should be drawn from the foundation sand cushion and cross the foundation ring wall or the slope protection surface. The circumferential distance should be less than 20 meters, and each API standard 650 vertical welded storage tanks should have at least 4 detection tubes.
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