Material requirements for API standard 650 fixed roof tanks

The specifications used in the design of large oil tanks, API standard 650 Fixed roof tanks mainly include American Petroleum Institute Standard API 650, Japanese Industrial Standard JIS B8501, British Industrial Standard BS2654 and Chinese National Standard GB50341 from a global perspective. The formulas used in each specification are based on the hoop stress in the membrane theory. Each specification is based on the performance characteristics of materials and the construction technology level of their respective countries to determine the allowable stresses and weld coefficients. Therefore, the calculation results of tank wall thickness of API standard 650 fixed roof tanks with the same volume are sometimes quite different according to different specifications.

API 650 storage tank, double-layer oil tank environmental protection advantages: ordinary single-layer steel API standard 650 fixed roof tanks oil tank is corroded by underground water and gas and electrolytic corrosion because it is buried underground all year round. The API 650 tank has a double-layer structure with a gap of 0.1 mm. The API standard 650 fixed roof tanks outer layer of FRP ensures that the leakage will not directly leak into the soil and water source.

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