40ft diameter API 650 self-anchored flat-bottom tanks

The liquid level of API 650 oil storage tank is covered by floating roof. The storage liquid of API 650 oil storage API 650 self-anchored flat-bottom tanks tank is isolated from the air, reducing air pollution, fire and explosion hazards, and easy to ensure the quality of liquid storage. It is especially suitable for the API 650 self-anchored flat-bottom tanks storage of high-grade gasoline, jet fuel and toxic and easily polluted liquid chemicals.

Aftershock Level Earthquake (ALE)
This design case shall be applicable only when regulations or project documents specifically require the tank system to be designed or evaluated for aftershocks.
If the outer tank is not designed as a secondary containment (i.e. it serves as vapor barrier and pressure boundary only and is not constructed of API 620 material suitable for the inner tank API 650 self-anchored flat-bottom tanks), then no design or evaluation for ALE is required by these provisions for the inner or outer tank.

The coating on the outer wall of API 650 self-anchored flat-bottom tanks can not only reflect light but also prevent corrosion. Different coatings for oil tanks have different reflective properties, and the reflective performance of coatings is expressed by reflection index. For example, the reflection index of white coating is 90.0, that of sky blue coating is 85.0, and that of light gray coating is 57.0. It can be seen that the white coating has good reflective performance, and coating the outer surface of API 650 self-anchored flat-bottom tanks with white coating can reduce the evaporation consumption of the oil tank.

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