"The incident took place last night during a shutdown operation in AU no 2. It is a normal process of the AUs which is done for annual maintenance purpose," P T Solanki, Incharge of the Human Resources department of Gujarat Refinery, told PTI.
No casualty was reported in the mishap. It took one hour for five fire tenders of the refinery and the Vadodara Municipal Corporation (VMC) to douse the fire, he said.
A committee has been appointed to probe the incident, he further said.
There are a total of five AUs in the refinery, which is owned by the Indian Oil Corporation (IOC), and the operations of the other four AUs have not been affected at all, he added.