Drones strike one of Russia's largest oil refineries in Yaroslavl, triggering major fire
Drones attacked the Slavneft-YANOS oil refinery in Yaroslavl, Russia, overnight against November 3, causing a large fire and infrastructure damage. Two refinery workers were reportedly injured, while debris also damaged nearby homes and vehicles. The plant, whose annual processing capacity is about 15 million tonnes of oil, had already suspended operations after a September 17 attack.
Key points
- The Slavneft-YANOS refinery in Yaroslavl was attacked overnight against November 3.
- A large fire broke out and the refinery sustained infrastructure damage.
- Two workers suffered shrapnel injuries, according to reports.
- Debris from downed drones damaged residential buildings and vehicles.
- The refinery has a processing capacity of about 15 million tonnes of oil per year, or roughly 300,000 barrels per day.
- ASTRA's OSINT analysis identified at least five major and two smaller fire sites.
- The refinery had stopped operations after a September 17 attack that damaged the AVT-3 unit.
Why it matters
The refinery produces fuel used by Russian military aviation and equipment and is described as a supplier to Russia's defense-industrial complex. The strike halted its operations, caused a major fire and damaged infrastructure at a plant capable of processing about 15 million tonnes of oil annually. Two workers were injured, and falling debris caused damage in nearby residential areas.
What happened
Drones attacked the Slavneft-YANOS oil refinery in Yaroslavl overnight against November 3. A large fire subsequently broke out at the plant, and regional governor Mikhail Yevraev reported infrastructure damage. Two refinery workers suffered shrapnel injuries. Residents reported loud explosions and the fire after a drone danger warning was issued for the region, while debris from downed drones broke windows in several apartment buildings and private homes and damaged vehicles. ASTRA's OSINT analysis found at least five major fire sites and two smaller ones on the refinery grounds. The attack came after an August 28 strike damaged the AVT-4 crude-processing unit and a September 17 attack damaged AVT-3, which accounts for about 40% of the plant's capacity. The refinery had suspended operations following the September attack.
How Ukrainian sources describe it
Ukrainian reports emphasize the refinery's military-industrial role, particularly its supply of fuel to Russian military aviation and equipment and defense-industrial facilities. They also foreground the scale of the fire, visible damage, the OSINT assessment of multiple fire sites, the two reported injuries and debris damage in nearby residential areas.
How international sources describe it
The English-language agency report centers on the refinery strike and fire while also placing it within the broader overnight drone attack and Russia's claimed interception count across several regions.
Where reporting differs
Russian authorities reported sharply different totals for the number of drones reportedly downed. Yaroslavl governor Mikhail Yevraev said air-defense and electronic-warfare forces downed 124 drones, while the Russian Defence Ministry counted 856 across 12 regions, including the area around Moscow, occupied Crimea and the Black Sea.
Background
The Yaroslavl refinery has operated since 1961 and is jointly controlled by Rosneft and Gazprom Neft through Slavneft. It produces automobile gasoline, diesel fuel, fuel oil, aviation kerosene, lubricants, paraffins and other petroleum products. Its output supplies central and northwestern Russia and provides fuel for Moscow Oblast. Previous attacks on August 28 and September 17, 2026, damaged the AVT-4 and AVT-3 primary crude-processing units.