What is the function of a crude oil washing system on a tanker?

The function of a crude oil washing system on a tanker is to wash cargo holds with crude oil during cleaning. This system is specifically designed to use the ship's own cargo—crude oil—to wash the internal surfaces of the cargo tanks after the tanks have been emptied of oil. By using crude oil for washing, the process can effectively remove residues and remaining contaminants that may be left in the tanks.

This method has several advantages, including the reduction of the need for additional cleaning agents and improving the efficiency of the cleaning process. The implementation of such a system helps ensure that the tanks are as clean as possible before being loaded again, thus minimizing contamination of future cargo loads.

Understanding this function is essential for tankermen and crew members involved in the handling of crude oil, as it directly impacts the safety and quality of both the operations and the product being transported.