5086 aluminum bar API 650 carbon and low-alloy steel tanks

Shell Stiffening Rings for Tanks That Contain Liquid: Internal or external shell stiffening rings may be required to maintain roundness when the API 650 carbon and low-alloy steel tanks is subjected to wind, vacuum, or other specified loads. When stiffening rings are required, the stiffener-to-shell weld details shall be in accordance with Figure R-1 and R.3.5.2 through API Standard 620 R.3.5.5. Three-plate laps or butt-weld junctions in the tank bottom shall be not closer than 12 in. from each other and/or the butt-welds of the annular plate.

These API 650 documents will define the bases of design, operation, inspection, tests, examinations, and maintenance of an API 650 carbon and low-alloy steel tanks industrial facility. Bidders will study and analyze all this API 650 documentation, both during the preparation of the quotation and during the execution of each project activity.

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