Explosion at MOL Petrochemical Plant in Tiszaujváros, Hungary – One Dead, Several Injured
May 21, 2026
Basic Incident Information
Date of incident: Friday, 22 May 2026.
Location: MOL Petrochemicals site, Tiszaujváros, eastern Hungary.
Incident type: Explosion during restart/maintenance of the Olefin 1 plant.
Casualties: 1 killed, several injured.
Incident Description
The explosion occurred during the restart of the Olefin 1 plant at MOL’s petrochemical site in Tiszaujváros. The company said the fire was localised by firefighters and the response remained ongoing after the blast. MOL said the circumstances were being investigated by experts and did not report any indication of external interference.
Separate reporting stated that a compressor likely exploded during restart work, and that among the injured one person suffered life-threatening respiratory burns while seven others sustained minor burns. Injured workers were transported to hospitals in Debrecen and Miskolc.
Preliminary Safety Focus
This incident highlights the risks of start-up and restart operations in petrochemical plants, especially where compressors and pressurised systems are involved. Strong controls around maintenance, isolation, pressure testing, and pre-startup review are critical before returning units to service.
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