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Kirishi refinery is one of Russia's top two refineries

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Tank at the refinery damaged by falling debris, governor

says

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Russia says 31 drones attacked Russia

(Edits headline, adds details on other drone attacks)

By Guy Faulconbridge

MOSCOW, March 8 (Reuters) - A tank at Russia's Kirishi

oil refinery, one of the country's largest, was damaged by

falling debris during a major Ukrainian drone attack, the

governor of the northwestern Leningrad region said on Saturday.

Surgutneftegaz's Kirishinefteorgsintez (KINEF)

refinery is one of the top two refineries in Russia. It refines

about 17.7 million tons per year (355,000 barrels per day) of

Russian crude, or 6.4% of the country's total, according to

industry sources.

"Air defences shot down one drone on approach, the other was

destroyed over the territory of the enterprise," Alexander

Drozdenko, governor of the Leningrad region, said on Telegram.

"When the debris fell, the external structure of one of the

tanks was damaged," he said.

No one was injured, he said.

The extent of the damage to the refinery was not immediately

clear. There was no immediate comment from Surgutneftegaz, one

of Russia's biggest oil companies, or from Ukraine.

The Kirishi refinery produces about 2.3 million tons of

gasoline, or 5.3% of Russia's total. It also produces 7.6% of

the country's diesel fuel, 16.3% of its fuel oil and 3.4% of its

aviation fuel, according to industry sources.

Russia's defence ministry said that 31 Ukrainian drones were

destroyed over Russia, including 26 over the Krasnodar region.

(Editing by Himani Sarkar)