The Tyumen oil refinery in Western Siberia halted crude oil processing on July 25 following a Ukrainian drone attack.

Two industry sources told this to Reuters on Tuesday, July 28, according to Ukrinform.

According to the sources, the strike caused fires at a diesel fuel hydrotreating unit and a high-octane gasoline production unit. They did not specify when the facility would be able to resume operations.

The refinery has a nominal processing capacity of around 9 million tonnes per year, or 180,000 barrels per day.

Industry estimates indicate that the refinery processes approximately 6 million tonnes of crude oil annually, producing around 500,000 tonnes of gasoline and 2.8 million tonnes of diesel fuel.