A project for production of linear alkyl benzene from kerosene streams was implemented in August 2004. It is the largest grassroots single train Kerosene-to-LAB unit in the world, with an installed capacity of 1.2 million tonnes per year. To meet future fuel quality requirements, MS quality improvement facilities were commissioned in 2006. The Residue Upgaration Project undertaken by the Gujarat Refinery was completed by 2011 which increased the high sulfur processing capacity of Gujarat refinery, improved the distillate yield as well produce BS III & IV quality of MS and HSD. The Residue upgradation project came in two parts namely, the south block which consisted of HGU-III, SRU-III, DHDT and ISOM units and the north block consisted of VGO-HDT and DCU units. To support the new units a new Co-Generation Plant (CGP) and Heat Recovery Steam Generation (HRSG) were also commissioned.