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Nuclear Russia teaches the dangerous (Repubblica.it)

the director of Greenpeace speaks: "The fire threat not only plants but also plants treating waste. Even a blackout would lead to the emergence of a few minutes" of

ANTONIO Cianciulli

Russian Mayak site, where they are stored nuclear waste
addition to the terrorist threat, the lack of fresh water for the cooling of equipment and costs that rears, for the nuclear fires now comes the grain: the scenario of Russia these days gives us a new vision of the risks of nuclear power stations. On the one hand Chernobyl back to show its effects, and secondly the siege of flames around the nuclear threat reveals a hitherto little-considered.

How is it that, after 24 years of the disaster that destroyed the reactor in Ukraine, the radioactivity became quite a problem?
"Radionuclides of cesium emitted in the explosion of Chernobyl will be reduced to only one-thousandth of three centuries," he says Onufrio Joseph, director of Greenpeace. "Today, 60 percent of the radioactivity is still there, in the ground and plants: the smoke of the fires affect the movement, although a local effect, unlike what happened in 1986 when the radioactive cloud rose up against him for miles, spreading destruction in a huge area. "

So in the account of the fires we have to put the Russians also radioactive contamination?
"A part of the cloud from Chernobyl has been recycled. It 'an element that is to aggravate an already critical health budget, since there was talk of a doubling of mortality in Moscow because of the smoke of the fires. Have increased substantially both particulates, creating immediate problems with breathing, that carcinogens such as benzene.

Other fires threaten nuclear power plants.
"Not only plants, the other nuclear facilities. For example, those of the atomic center of Mayak, in the Urals, where there is an open-air storage of nuclear waste which is stored 40 tons of plutonium."

What is the risk?
"There are different levels of risk. For example, suppose that the flames hit only the exterior lines of transmission of electricity transformers. Well, the station is isolated and there should be a fast shutdown of the reactor, a procedure which involves always a certain amount of risk. "

E 'already happened?
"It 'just happened to Mayak on September 3, 2000. For twenty minutes was interrupted electricity supply and launched the security system based on diesel engines. Those engines were able to work only for 30 minutes, if the problem had lasted longer it would have entered a critical situation. "

A similar problem could also affect the plants that Berlusconi's government wants to build in Italy?
"In our case we speak of EPR for which there is a ceiling limit of two minutes for a fire. When we look at what is happening in Russia and we think that climate change will get worse ...."


(August 11, 2010)