"Fire in Vessel VV-4 of hydrocracker unit of Numaligarh refinery, which started around 7.20 p.m. this evening is under control. No injuries or casualties reported," the refinery said in a statement.Numaligarh refinery was shut down for maintenance in the last week of March and has been restarting operations a unit at a time since May 15, an NRL spokesperson said.
The affected hydrocracker was undergoing post-startup stabilisation when part of it caught fire, the person added.