Fuel Oil is a fraction obtained from petroleum distillation, either as a distillate or a residue. Broadly speaking, Oil is any liquid petroleum product, which is burned in a furnace or boiler for the generation of heat or used in an engine for the generation of power, except oils having a flash point of approximately 40 oC (104 o F). Oil is made of long hydrocarbon chains, particularly alkanes, cycloalkanes and aromatics. The term Fuel Oil is also used in a stricter sense to refer only to the heaviest commercial fuel that can be obtained from crude oil, heavier than gasoline and naphtha. Fuel oil with following specification is available: CST 180 and CST 230 Viscosity kinematic @ 50 C (max) 180 230Pour point (max) C 5.0 15.0Flash point (min) C 63 63Sulphur Total (max) %mass 3.0 3.0Carbon Residue Conradson (max)%mass 13 13Ash (max) %mass 0.05 0.05Water & sediment (max) %vol 0.5 0.5Colorific value higher (min) MJ/kg 42.2 42.2