API Std 650 ambient temperature tanks annular bottom plates

If additional requirements are met, higher internal pressures are allowed. API 650 only covers tanks that support the whole bottom evenly and API Std 650 ambient temperature tanks tanks in non-refrigerated service that have a maximum design temperature of 200 degrees F. It requires that you have a minimum material thickness of 3/16 inch.

The refrigerated tank primary components shall also include those parts of a single-wall or an inner tank that are not in contact with the refrigerated liquid but are subject to the refrigerated temperature. Such API Std 650 ambient temperature tanks components include roof plates, roof manways and nozzles with their reinforcements, roof-supporting structural members, and shell stiffeners when the combined tensile and primary bending stresses in these components under design conditions are greater than 6000 lbf/in.2.

As we know, the vertical metal tank, API Std 650 ambient temperature tanks is welded by many components, and the welding quality of each component determines the later use effect of the API Std 650 ambient temperature tanks. Professional API Std 650 ambient temperature tanks manufacturers should have a set of professional skills in the welding process of API Std 650 ambient temperature tanks. Key points for weld inspection of vertical metal tank, API Std 650 ambient temperature tanks:
1. It is strictly forbidden to paint the welds before passing the inspection.
2. Visual inspection shall be carried out for welds.
3. NDT shall be carried out on the weld.

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