TENGAKHAT, DIBRUGARH DISTRICT, ASSAM, INDIA — One contractor worker died and six others suffered burn injuries in a fire during maintenance at Oil India Limited’s Tengakhat Intermediate Tank Farm on 6 November 2026. The company’s signed exchange filing confirms the casualties and announces an internal inquiry.
Fire occurred in heater area under maintenance
Oil India places the incident at about 9:05 a.m. local time in the indirect bath heater area near Duliajan, in Assam’s Dibrugarh district. It says that area had been taken out for maintenance and isolated since 4 November.
The company reports that seven operations-and-maintenance contractor personnel were burned; one died at the site. Five injured people were taken to Assam Medical College and Hospital and one to OIL Hospital.
Inquiry announced after firefighting response
The filing says fixed firefighting equipment and mobile tenders were used, with eleven tenders deployed and the fire extinguished at 12:30 p.m. The inquiry will examine immediate and underlying causes, damage and prevention measures.
The statement that an area was isolated describes its reported status; it does not establish whether every relevant energy or material source was effectively controlled. No completed investigation finding was retrieved.
HSE Blog Analysis
For process operators, maintenance is a useful focus for assurance because the plant configuration differs from normal production. The practical review is whether the work team and the operating team share the same understanding of boundaries, changing conditions and authority to stop or reassess the task.
A meaningful review can trace a recent maintenance job from its initial scope through handover and reinstatement, checking what evidence supported each decision. That is an editorial application, not a conclusion about what failed at Tengakhat. Our chemical-safety overview provides background on substance hazards; assessing non-routine work in practice considers how written arrangements can be tested.
Sources and verification
Checked Oil India’s signed release hosted by NSE, Reuters, PTI via ThePrint, The New Indian Express and Hub Network: five issuing/reporting organisations. NSE is the filing host, not another witness. Much coverage draws on the company. Early missing-person reports are superseded here by its confirmed casualty statement; no ignition cause is inferred. The conceptual image is not a scene reconstruction. Actual photographs remain with linked publishers and are not reproduced.
Source
Oil India Limitednsearchives.nseindia.com
