Doomed Chernobyl Reactor to Be Buried in Giant Steel Coffin

KIEV, Ukraine —  Twenty-two years after the Chernobyl nuclear disaster, work is under way on a colossal new shelter to cover the ruins and deadly radioactive contents of the exploded Soviet-era power plant.

For years, the original iron and concrete shelter that was hastily constructed over the reactor has been leaking radiation, cracking and threatening to collapse. The new one, an arch of steel, would be big enough to contain the Statue of Liberty.

Once completed, Chernobyl will be safe, said Vince Novak, nuclear safety director at the European Bank for Reconstruction and Development which manages the $505 million project.

The new shelter is part of a broader $1.4 billion effort financed by international donors that began in 1997 and includes shoring up the current shelter, monitoring radiation and training experts.

The explosion at reactor No. 4 on April 26, 1986 was the world's worst nuclear accident, spewing radiation over a large swath of the former Soviet Union and much of northern Europe. It directly contaminated an area roughly half the size of Italy, displacing hundreds of thousands of people.

In the two months after the disaster, 31 people died of radioactivity, but the final toll is still debated. The U.N. health agency estimates that about 9,300 will eventually die from cancers caused by Chernobyl's radiation. Groups such as Greenpeace insist the toll could be 10 times higher.

The old shelter, called a "sarcophagus," was built in just six months. But intense radiation has weakened it, according to the U.S. Nuclear Regulatory Commission, and rain and snow are seeping through cracks.

Officials say a tornado or earthquake could bring down the shelter, releasing clouds of poisonous dust.

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