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If steam- or air supply is not available, the water driven fans are another ideal solution for gas freeing ship's oil tanks, pump rooms, removal of welding fumes, supply of cool fresh air after cleaning or during painting of the tanks.
For the blowing duty, air from the atmosphere is forced into the tank, by one or more fans, inserted into the Butterworth holes through one or more lengths of BECO® "antistatic" air ducts, reaching to within a meter of the bottom. The displaced gases are then driven out through the main hatch, BECO® air ducts are also used to conduct the gases from the fan to a suitable discharge point on deck.
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