A fire broke out at the Numaligarh Refinery Limited's Hydrocracker Unit (HCU) in vessel Number VV-04 at approximately 19:20 hours on 29.05.2023. The vessel is a cold high-pressure separator. The fire was brought under control within 20 minutes of break out. However, as per firefighting protocol, cooling through water spraying is still being carried out.

Assessment of the damage has not been done yet. There is no personal injury or fatality in the incident. Nearby Hydrogen unit has been shut down as a precautionary measure.

An external investigation committee is being constituted to investigate the root cause of the incident and to ascertain the quantum impact of the incident.