aluminum sheet 5254 API 650 low-alloy steel tanks

The API 650 specification provides guidelines for the API 650 low-alloy steel tanks design, manufacturing, materials, installation and inspection of welded vertical and cylindrical tanks. Such containers must be on the ground and have a closed or open top.

The cleanliness of the API 650 low-alloy steel tanks has a great influence on the safety of the tank and the quality of the oil stored. Keeping the API 650 low-alloy steel tanks clean can slow down the corrosion of the tank wall and reduce the pollution to the oil. If the inside of the API 650 low-alloy steel tanks is not cleaned all the year round, a lot of rust and metal impurities will be produced in the tank. These impurities will cause the oil to slowly oxidize and deteriorate. The impurities mixed into the oil will also block the filter and oil circuit, causing oil supply failure.

Foundations and subgrade shall safely carry the weight of the tank API 650 low-alloy steel tanks and its contents when the tank is filled with water to the highest level required for a hydrostatic test or other water-loading operations, even though the tank itself may be designed for some lesser density of liquid. However, in cases where the character of the soil justifies it and a competent soil expert advises it, allowance may be made for the relatively short duration and intermittent nature of the water loadings if suitable account is taken of all such loadings that may be expected to occur during the life of the tank, including not only those loadings that are incidental to periodic repetitions of the hydrostatic test in accordance with 7.18 but also water-filling operations for gas-freeing purposes.

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