engleski

WASHING PROCESS OF CARGO TANKS ON TANKERS FOR TRANSPORTATION OF CRUDE OIL

The paper deals with the system employed for washing cargo tanks that are used aboard ships to transport crude oil. Tankers that are designed for the transportation of crude oil must be in accordance with the regulations of IMO - MARPOL, a system for washing crude oil cargo tanks and slop tanks. Using the system for cleaning tanks is among the most important operations on ships designed to transport liquid cargo, whether it is crude oil, petroleum products, or various chemical products. The task of the system is the removal of the residues left behind during the change of cargo, maintenance, supervision, and inspection of tanks. A significant progress in the area of transportation of crude oil has been made by a new development of principles known as "Crude Oil Washing¨ (COW), or cargo tank washing system. The system is based on the principle that the apparatus for washing tanks (jets) uses crude oil, i.e. the cargo being transported. Residues from the tank surface are simply removed by jets of crude oil, and are subsequently pumped out with the rest of the cargo. The solution of using crude oil in the process of washing tanks on tankers designed for the transportation of crude oil is much more economical than the use of sea water. It has eliminated large amounts of oily water after washing, resulting in a smaller quantity released into the sea, thereby reducing the possibility of environmental contamination.

tanks washing; crude oil; jet; sea water

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