New Delhi: State-run Indian Oil Corp will shut its 120,000 barrels per day (bpd) Barauni refinery in April for planned maintenance lasting 30 days, a company official said on Wednesday.

"It will be a total shutdown of the refinery for a month," the official, who did not want to be named, said.

The refinery in the eastern state of Bihar was originally scheduled to be shut for maintenance in October, but it was defered to February, and then to April.

IOC is also planning to shut down it 13,000-bpd Digboi refinery in the northeastern state of Assam in March for maintenance. The 100-year-old unit is the country's oldest and IOC's smallest refinery.

India's Mangalore Refinery and Petrochemicals Ltd (MRPL) plans to shut part of its 180,000-bpd refinery at Mangalore for 25 days from March 20.