Chennai Petroleum Corporation (CPCL), a subsidiary of Indian Oil Corporation (IOC), is planning to invest about Rs 1,495 crore to produce BS-VI fuel for the automobile industry. The only stand-alone refinery in the country, CPCL, said that it is looking at setting up a nine million tonnes per annum (mtpa) expansion project. All the Indian refineries are required to produce BS-VI specification auto fuels, effective from April 2020, in order to reduce sulphur content in automotive fuels, to improve environmental aspects.
CPCL has initiated measures to revamp diesel hydro-treating (DHDT) unit capacity and to set up a new FCCU gasoline treatment

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