5254 aluminum tube API 650 unanchored liquid-storage tanks
API 650 unanchored liquid-storage tanks, Oil tanks can be divided into above ground storage tanks, underground storage tanks, offshore tanks and submarine tanks according to their installation positions. Oil tanks can be divided into crude oil tanks, fuel oil tanks, lubricating oil tanks, edible oil tanks, etc.. According to the use of oil tanks, oil tanks can be divided into production tanks, storage tanks, etc.. According to the external style, oil tanks can be divided into vertical tanks, horizontal tanks, etc.. According to the composition structure, oil tanks can be divided into fixed roof storage tank, floating roof tank, spherical tank, etc.
Uplift on FoundationFor API Standard 620 tanks with an internal design pressure less than 1 lbf/in.2 gauge, the uplift shall be taken as the smaller of the maximum uplift values computed under the following conditions:a)The internal design pressure times 1.5 plus the design wind load on the shell and roof.b)The internal design pressure plus 0.25 lbf/in.2 gauge plus the design wind load on the shell and roof.
API 650 sets minimum requirements for the design, material, construction, and testing for aboveground, open and closed-top, cylindrical API 650 unanchored liquid-storage tanks steel storage tanks in different capacities and sizes, roughly equating to the pressure of the atmosphere (not greater than the weight of the roof plates).
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