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. Last Updated: 07/27/2016

Reactor No. 4 Radiation Leak Discovered

KIEV -- A minor radiation leak was discovered Thursday in a reactor destroyed at Chernobyl 10 years ago in the world's worst commercial nuclear accident.

Plant operators reported that a small amount of radioactive dust leaked into the water filtration system of reactor No. 3 from the adjacent reactor No. 4, which was shattered by explosion and fire 10 years ago Friday.

Thursday's leak ranked as a level one on the seven-level scale of nuclear accidents developed by the International Atomic Energy Agency, said Andry Shatsman, shift engineer at the plant.

Level one means an accident does not pose radiation danger, but indicates a lack of safety provisions. The 1986 Chernobyl explosion measured seven.

Shatsman said workers in protective clothing cleaned up the contamination Thursday, and no other employees were exposed to radiation.

Out of 1,037 Muscovites polled this month by the Mnenie public opinion research service, 45.5 percent said a nuclear disaster in Russia similar to the one in Chernobyl is "quite possible."

while 2.3 percent said it was "inevitable." Another 27.9 percent of the respondents said they didn't know, and the rest thought such a catastrophe unlikely.

The poll, which had a 3 percent margin of error, reflected a widespread concern over the safety of aging Soviet-designed nuclear reactors.