API standard 650 fixed roof tanks tank anchorage

The water dissolved in the oil will be separated out from the oil stored in the API standard 650 Fixed roof tanks for a long time, and the acidic water layer will appear at the bottom of the API standard 650 fixed roof tanks for a long time, which will accelerate the corrosion of the API standard 650 fixed roof tanks and cause the wall thinning and even leakage. With the increase of service life, the API standard 650 fixed roof tanks must be inspected and cleaned regularly to check the hidden danger.

API 620 Tank Design
The designer of these large tanks API standard 650 fixed roof 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.

Fixed roof API 650 oil storage tank includes inner floating roof tank, which API standard 650 fixed roof tanks can effectively prevent sand, rain, snow or dust from polluting the storage liquid. Under various weather conditions, API 650 oil storage tank can ensure the quality of liquid storage, which is called "all-weather API standard 650 fixed roof tanks storage tank".