What aspects should be considered when designing underground tanks?
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What aspects should be considered when designing underground tanks? What standards govern it?
Unlike above-ground storage tanks, the main considerations are the external pressure resulting from burial, soil corrosion of the tank, the layout of process connections, and the type of level gauge...
Carbon steel tanks should consider the use of enhanced or higher-level anti-corrosion measures. The pipe openings are generally concentrated on one or two large pipe flange covers. Calculating the external pressure on the soil is essential, and reinforcement rings are generally used for this purpose. Attention should also be paid to preventing floating. The design standards depend on the pressure inside the tank; otherwise, it is the same as other containers.
If covering with soil is done, consider the external pressure of the soil. Then there is the anti-corrosion treatment. Also, if there is groundwater, the buoyancy of the groundwater needs to be taken into account.