C3 heavy fuel oil is a blend of hydrocarbons obtained through straight-run and secondary processing of crude oil. The maximum sulfur content in this fuel oil grade is 3% (m/m).
C3 heavy fuel oil satisfies internal quality standards observed at PKN ORLEN S.A., which comply with the Minister of Energy's Regulation of December 1st 2016 on quality requirements concerning sulfur content in oils and on the types of systems and conditions in which heavy fuel oils can be used (Dz.U. of December 14th 2016, item 2008).
C3 heavy fuel oil is burned in central heating boilers, steam generators and industrial furnaces, and is also used in industrial processes.