A Ukrainian attack has knocked out Russia's Orsk refinery and the plant will stay shut for months, Reuters reported, creating fuel supply problems in the affected regions.

The outage is the latest in a series of Ukrainian strikes against Russian refining assets, and the damage at Orsk is severe enough that operators cannot restore processing on a short turnaround schedule. The multi-month repair timeline sets the plant apart from facilities that returned to service within weeks of earlier attacks.

The extended shutdown tightens Russia's domestic fuel balance. Refinery outages reduce diesel and gasoline output available to the internal market, and a repair campaign measured in months gives distributors little room to offset the loss with runs from neighbouring plants. The result, according to the Reuters report, is localised fuel supply problems while the plant remains offline.

For buyers and logistics operators in the region, the watch item is the repair schedule. A firm restart date — or evidence that the operator has sourced replacement processing units rather than repairing damaged ones — will signal whether the outage holds to the projected months-long window or slips further.

The strike also keeps the focus on the wider pattern of attacks on Russian refining capacity, which has repeatedly forced unplanned stoppages and reshaped domestic product flows since the start of the campaign. Each extended outage raises the cost of keeping the domestic market supplied and adds to the repair burden Russian operators must fund.

Rig & Refinery will track the restart timeline at Orsk and any Russian government response on fuel-market measures as repair work proceeds.