A737 grade B plates API 650 anchored liquid-storage tanks

API 650 petroleum storage tanks use lightning protection, anti-static, and fire protection measures. The internal corrosion protection should be determined according to the API 650 anchored liquid-storage tanks storage medium, and the outer wall corrosion protection should be determined according to the soil quality of the buried tank.

API 620 Tank Design
The designer of these large tanks API 650 anchored liquid-storage tanks shall supply the data on superimposed loadings to be assumed for the foundation design or, if there are no foundations, for direct loading on the subgrade. A slab or mat may be provided to support the superstructure and shall be considered to distribute the load more evenly over a lower natural subgrade compared with merely stripping, leveling, and rolling the existing grade.
For simple spheroids or tanks of similar design, in which the distribution of the imposed weights shifts because the liquid level in combination with the vapor pressure may change the shape of the tank, the designer shall consider the possibility of such a change.

The cleanliness of the API 650 anchored liquid-storage tanks has a great influence on the safety of the tank and the quality of the oil stored. Keeping the API 650 anchored liquid-storage 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 anchored liquid-storage 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.

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