Tuesday, 22 September 2026, 12:22:18 PM
INA Successfully Starts Up New Delayed Coker Unit (DCU) at the Rijeka Refinery
Gabriel Szabó, Executive Vice President of Downstream at MOL Group, highlighted"....the successful start-up of the Delayed Coker Unit shows that INA’s biggest single investment in history and one of MOL’s largest-ever industrial investment is now delivering real results."

INA Successfully Starts Up New Delayed Coker Unit (DCU) at the Rijeka Refinery

The Rijeka Refinery Upgrade Project has reached another major milestone. Following the successful achievement of Mechanical Completion and commissioning, the new Delayed Coker Unit (DCU) has successfully achieved start-up. 

Following the transfer of operational responsibility to INA, feedstock was introduced into the unit on 1 September 2026, marking the beginning of production. Since then, the unit has been operating continuously, reaching approximately 70% of its design capacity. 

With the start-up of the Delayed Coker Unit, the refinery is now capable of processing heavy residues into higher-value products. The same amount of crude oil is expected to yield up to 30% more diesel. The refinery can now process heavier grades, which makes crude sourcing far more flexible, broadening the pool of potential suppliers. The unit also entirely eliminates the need to import vacuum gas oil (VGO).

Zsuzsanna Ortutay, President of the Management Board of INA, noted:   ...... Our investments continue in this direction with other projects such as the first green hydrogen production plant currently under construction and the steam back pressure turbine installation which have been completed. Thank you to all colleagues from INA and MOL Group, without whose support this investment would not have been possible.”

INA Group plays a leading role in the Croatian oil business and holds a significant position in the region in oil and gas exploration and production, oil refining, and distribution of oil and petroleum products. The regional retail network includes more than 500 service stations in Croatia and neighbouring countries. INA Group is a member of the MOL Group.

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