How long is the repair timeline expected to be for MOL’s damaged Olefin-1 steam cracker in Tiszaújváros, and what is the basis for that estimate?

Repairs to MOL Group’s damaged Olefin-1 steam cracker at Tiszaújváros are expected to take 'several months', according to a May 27 update on the company’s website. This estimate is based on preliminary expert assessments following the May 22 explosion; MOL stated that a more precise timeline will only emerge after the technical inspection of damaged equipment, pipelines, and structural elements is completed. The company confirmed it has received regulatory approvals to begin restoration work and has established a dedicated team for the effort, though safe removal of hydrocarbons from the plant remains ongoing.

What was the cause of the May 22 explosion at MOL’s Olefin-1 cracker, and what were its immediate human consequences?

According to MOL’s earlier statement, the May 22 explosion occurred during a restart of the Olefin-1 cracker following planned maintenance, and was caused by hydrocarbons exploding within one of the unit’s pipelines as the restart was being initiated. The incident resulted in one fatality and injuries to nine other employees.

Repairs to Damaged MOL Cracker in Hungary Could Take Several Months

May 28, 2026

MOL Group announced repairs to its damaged Olefin-1 steam cracker in Hungary may take several months following a fatal explosion. While other units operate normally, the outage impacts ethylene capacity and feedstock supply.

chemweek

2026-05-28

Repairs to Damaged MOL Cracker in Hungary Could Take Several Months

Repairs to Damaged MOL Cracker in Hungary Could Take Several Months

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