Russian Arctic oil spill pollutes big lake near Norilsk
Diesel oil from a huge spill in Russia’s Arctic north has polluted a large freshwater lake and there is a risk it could spread into the Arctic Ocean, a senior Russian official says.
Emergency teams are trying to contain the oil, which has now travelled about 20km (12 miles) north of Norilsk from a collapsed fuel tank.
It is the worst accident of its kind in modern times in Russia’s Arctic region, environmentalists and officials say.
The oil started leaking on 29 May.
So far about 21,000 tonnes have contaminated the Ambarnaya river and surrounding subsoil.
Investigators believe the storage tank near Norilsk sank because of melting permafrost, which weakened its supports. The Arctic has had weeks of unusually warm weather, probably a symptom of global warming.
The power plant where it happened is run by a subsidiary of Norilsk Nickel, the world’s leading nickel and palladium producer.
Lake Pyasino serves as the basin for the Pyasina river, which flows to the Kara Sea, part of the Arctic Ocean. From October to June that river is usually ice-bound.
“The fuel has got into Lake Pyasino,” said Alexander Uss, governor of Krasnoyarsk region.
“This is a beautiful lake about 70km [45 miles] long. Naturally, it has both fish and a good biosphere,” Interfax news agency quoted him as saying.
“Now it’s important to prevent it from getting into the Pyasina river, which flows north. That should be possible.”
Clean-up teams have removed about 23,000 cubic metres (812,000 cubic feet) of contaminated soil, Ria Novosti news reports.
The pollution “will have a negative effect on the water resources, on the animals that drink that water, on the plants growing on the banks”, said Vasily Yablokov of Greenpeace Russia.
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Greenpeace has compared it to the 1989 Exxon Valdez disaster in Alaska.
Russian prosecutors have ordered checks at “particularly dangerous installations” built on permafrost.
Delays over reporting the collapse angered President Vladimir Putin and the power plant’s director, Vyacheslav Starostin, has been taken into custody.
The Russian Investigative Committee has launched a criminal case over pollution and alleged negligence.
What is permafrost?
The term is used for ground that is frozen continuously for two or more years.
Some 55% of Russia’s territory, predominantly Siberia, is permafrost and home to its main oil and gas fields.