Explosion at MOL Petrochemical Plant in Tiszaújváros Leaves One Dead, Multiple Injured

On 22 May 2026, a pipeline explosion struck the Olefin 1 steam-cracker at MOL Group’s petrochemical complex in Tiszaújváros, eastern Hungary. The blast ignited a fire, produced a thick black plume, and caused one death and several injuries. It occurred during a restart after scheduled maintenance.

UsNews and World Report

MOL Petrolkémia’s Tiszaújváros site hosts two steam-crackers; Olefin 1 produces about 370,000 t of ethylene annually for Hungary’s plastics sector. Present were Prime Minister Péter Magyar, Energy Minister István Kapitány, Health Minister Zsolt Hegedus, MOL CEO Zsolt Hernádi, Mayor György Fülöp, and disaster-management spokesperson David Dojcsák.

Explosion occurred at MOL petrochemical plant in Hungary, one dead and several injured

08:45 – explosion reported; rescue protocol started. 08:47 – firefighters from Tiszaújváros and Miskolc, plus a mobile lab, arrived. 09:00 – Prime Minister posted condolences; helicopters evacuated victims. 10:25 – fire extinguished and site secured.

One Dead, Several Seriously Injured after Explosion at MOL Plant in Tiszaújváros

MOL first reported one death and nine injuries; other outlets cited seven, while the Health Ministry later noted one fatality, one serious injury, and seven minor burns. The Olefin 1 unit’s capacity is ~370,000 t ethylene. Five helicopters, fire engines and a mobile lab responded. No hazardous-substance exceedances were found.

Explosion at MOL petrochemical plant in Hungary causes fire; no excess of harmful substances recorded

Prime Minister Magyar offered condolences and urged swift recovery. Energy Minister Kapitány said a mobile lab detected no hazardous-material levels above limits. MOL CEO Hernádi called the event an unexpected industrial accident with no external interference. Health Minister Hegedus confirmed the final casualty tally and that the site was cleared by 10:25 a.m. Mayor Fülöp assured residents that no public safety measures were required.

Casualties After Explosion at MOL Petrochemicals Base in Hungary

MOL initially cited nine injuries, while AP and Reuters reported seven, and the Health Ministry later listed one serious injury and seven minor burns. The exact cause remains unsettled, with some sources mentioning a hydrocarbon pipeline rupture and others a pyrogasoline line failure. No evidence of external sabotage has been presented.

Explosion occurs at MOL’s Tiszaújváros plant

• “This is an accident, there was no external intervention nor external involvement, neither us nor the authorities saw (anything like that) so such conclusions must not be drawn,” — Zsolt Hernádi, Chairman and CEO, MOL Group

UsNews and World Report

• “We express our sincere condolences to the family of the deceased and wish the injured a speedy recovery,” — Péter Magyar, Prime Minister of Hungary

Associated Press

• “Kapitany wrote that a disaster response mobile laboratory did not detect any concentrations of hazardous materials above the threshold limit.” — István Kapitány, Minister of Economy and Energy

The Hindu

• “A spokesperson for the regional disaster management authority told state news agency MTI that the fire caused by the explosion at the plant had been extinguished.” — David Dojcsák, spokesperson for the regional disaster management authority

Associated Press

Authorities and MOL have launched a joint technical investigation to determine the precise cause of the pipeline rupture. Preliminary findings will be reviewed by the national disaster-management agency, and safety recommendations are expected to be issued before the plant resumes full operation.

Explosion occurs at MOL’s Tiszaújváros plant