API 650 ground-supported liquid storage tanks for petroleum storage

The cone slope of the completed API 650 ground-supported liquid storage tanks foundation is 15/1000 for the general foundation and less than 35/1000 for the soft foundation. After the foundation settlement of the storage tank is basically stable, the surface slope must be greater than eight thousandths. The edge of the tank bottom should be more than 0.3 meters higher than the surrounding ground. Above the ground, the tank bottom leakage detection tube should be drawn from the foundation sand cushion and cross the foundation ring wall or the slope protection surface. The circumferential distance should be less than 20 meters, and each API 650 ground-supported liquid storage tanks should have at least 4 detection tubes.

Compared with the fixed roof API 650 oil storage tank without API 650 ground-supported liquid storage tanks floating roof, there is no evaporation space. In principle, this eliminates the so-called "large breathing loss". Evaporation not only causes the loss of product quantity, but also affects the quality of API 650 ground-supported liquid storage tanks product and pollutes the environment.

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