Waste Oil Refinery Plant or WORP processes used oil and restores its qualities so that it is fit for use or deemed as good as new. Before going into the details of waste oil refinery plant, it is made clear that waste oil is distinct from used oil. While used oil refers to the oil which is used more than one time earlier, waste oil refers to contaminated oil. The quality of transformer oil is crucial for the longevity of the transformer and such quality deteriorates with the course of time. Transformer oil is subjected to numerous physical and chemical processes and becomes degraded over course of time. This has a negative impact on the performance and life span of the oil.