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QID - 24759

You are planning to use the crude oil washing system on your tankship. What is required to prevent electrostatic buildup in the tanks?

The source tank for the tank cleaning machines must have least one meter decanted from it. 
The inert gas system must reduce the oxygen content in the tanks to a maximum of 18%.
The portable machines must be set at the proper drop for the first wash before the fixed machines are used.
The fixed machines must be operated simultaneously with the portable machines to equalize the electrostatic potential.
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