API 650 mechanically-anchored steel tanks shell manholes and nozzles

Combination of Design Loads
The inner tank API 650 mechanically-anchored steel tanks shall be designed for the most critical combinations of loading that result from internal pressure and liquid head, the static insulation pressure, the insulation pressure as the inner tank expands after an in-service period, and the purging or operating pressure of the space between the inner and outer tank shells, unless the pressure is equalized on both sides of the inner tank.

Welded steel API 650 mechanically-anchored steel tanks storage tanks that are designed, manufactured and installed on the ground are classified according to the API standard system. The three API standards API 650 mechanically-anchored steel tanks all adopt on-site production and installation of storage tanks.

The coating on the outer wall of API 650 mechanically-anchored steel tanks can not only reflect light but also prevent corrosion. Different coatings for oil tanks have different reflective properties, and the reflective performance of coatings is expressed by reflection index. For example, the reflection index of white coating is 90.0, that of sky blue coating is 85.0, and that of light gray coating is 57.0. It can be seen that the white coating has good reflective performance, and coating the outer surface of API 650 mechanically-anchored steel tanks with white coating can reduce the evaporation consumption of the oil tank.