CPCL, a subsidiary of Indian Oil Corp (IOC), had shut its refineries in Manali and Nagapattinam, near Chennai, on December 2 and 6, respectively due to heavy rains and water logging.
"The operations in the Crude Distillation Unit - II (CDU-II) and Fluidized Catalytic Cracking Unit (FCCU) of the Manali Refinery of CPCL resumed on December 22, 2015 and December 23, 2015, respectively," the company said in a regulatory filing.
However, half of the Manali refinery hadn't started on that date because the FCCU and CDU-II were not functional.
CDU is the primary unit that processes crude oil while FCCU produces high-end fuels.
Manali refinery near Chennai has a capacity of 10.5 million tonnes per annum while Nagapattniam has one million tonnes a year capacity.
