API 650 flat-bottom steel tanks local shear transfer

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

API 650 petroleum storage tank stipulates that if the thickness of the lower siding obtained by calculating the anti-overturning moment is greater than the thickness of the API 650 flat-bottom steel tanks hydrostatic pressure test (both do not include the corrosion margin), the calculated thickness of the above siding required by the hydrostatic pressure is It should also be increased by the same proportion, unless special analysis is performed to determine the seismic overturning moment and corresponding stress at the bottom of each layer of API 650 petroleum storage tank wall.

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