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 280 and CST 380 Density @ 15 �° C (max) kg /L 0.97 0.99Viscosity kinematic @ 50 �° C (max) 280 380Pour point (max) �° C 24 32Flash point (min) C 65 65Sulphur Total (max) %mass 3.5 3.5Carbon Residue Conradson (max)%mass 15 20Ash (max) %mass 0.15 0.15Water & sediment (max) %vol 1.0 1.0Colorific value higher (min) MJ/kg 41.7 41.7