A516 Gr 415 plates API standard 650 floating-roof tanks

When API 650 storage tank is designed, when the design pressure is small F2 kPa, the impact of air pressure on the API standard 650 floating-roof tanks tank wall thickness is not considered in the tank wall design.

To scientifically evaluate the remaining service life of the API standard 650 floating-roof tanks, it is necessary to know the thickness change and development trend of the storage tank sheet after long-term use, combined with the metal characteristics of the storage tank, the influence of various external conditions and the continuous change of the oil pressure in the API standard 650 floating-roof tanks, etc. factors to judge. Because the metal characteristics, corrosion defects, load and other numerical parameters of the API standard 650 floating-roof tanks are randomly changed, the value of the remaining service life of the storage tank will also be dynamic.

Aftershock Level Earthquake (ALE)
This design case shall be applicable only when regulations or project documents specifically require the tank system to be designed or evaluated for aftershocks.
If the outer tank is not designed as a secondary containment (i.e. it serves as vapor barrier and pressure boundary only and is not constructed of API 620 material suitable for the inner tank API standard 650 floating-roof tanks), then no design or evaluation for ALE is required by these provisions for the inner or outer tank.

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The mode of iron and API standard 650 floating-roof tanks steel logistics transportation is mainly intercontinental ocean shipping and inland rail transportation. European ports have been very mature after years of development, such as Hamburg in Germany, Rotterdam in the Netherlands and Antwerp in Belgium. Relying on the huge market of the European Union, these ports are positioned in the logistics distribution function of cargo distribution and large import and export, and play a great role in the transportation of API standard 650 floating-roof tanks steel logistics.