Method for eliminating hazardous materials from cargo tank wet lines

摘要

The invention disclosed relates to a method for purging hazardous or volatile materials from external loading lines fixed to the bottom of cargo tank compartments. According to the invention, pressurized gas is directed into each external loading line to force the material to the lowest point in the loading line, through a purging tube, and back into the cargo tank compartment. In one embodiment, the purging apparatus is wholly contained on the cargo tank. In another embodiment, the apparatus is partly contained on the cargo loading facility and partly contained on the cargo tank.