Chennai Petroleum Corporation plans to shut a diesel hydrotreater at its 210,000 barrel-per-day Manali refinery in Tamil Nadu for 60 days from August, for a revamp to produce Euro-VI compliant diesel, said a Reuters report. The company is also installing a gasoline desulphuriser to reduce sulphur content in the gasoline produced from fluidised catalytic cracker. These facilities are targeted for completion by September and commissioning by end-December.