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Russian nuclear plant says it emits nuclear isotope via ABC News

A senior executive at the Russian nuclear processing plant suspected of being behind a spike of radioactivity over Europe this fall admitted Wednesday that the isotope recorded does emerge as part of the plant’s production cycle but said its levels are negligible.

Russian officials last month reported high levels of ruthenium-106 in areas close to the Mayak nuclear plant in the Ural Mountains.

The environmental group Greenpeace alleged that Mayak could have been the source of a ruthenium-106 leak, but the plant said it has not extracted the isotope or conducted any other operations that may lead to its release “for many years.”

But Yuri Mokrov, adviser to Mayak’s director general, said in a webcast press conference Wednesday that ruthenium-106 routinely emerges during the processing of spent nuclear fuel. Mokrov insisted, however, the plant was not the source of any major leak, saying it does not produce the isotope on purpose and that the emissions that the plant makes are so insignificant “we can only see it in the chimney.”

[…]

Mayak, in Russia’s Chelyabinsk region, saw one of the world’s worst nuclear accidents on Sept. 29, 1957, when a waste tank exploded. That contaminated 23,000 square kilometers (9,200 square miles) of territory and prompted authorities to evacuate 10,000 residents from neighboring regions.

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