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Sunday, April 24, 2011

'Nuclear waste: Keep out – for 100,000 years'

 a must read from the guardian................


"Current opinion is that the best thing to do with nuclear waste is put it underground in what is known as a "deep geological repository". At present, there are no such repositories in operation anywhere. In Britain, all the nuclear waste produced since the 1940s is stored above ground in Sellafield. Preliminary moves have been made towards finding a site in Cumbria but there's a powerful local resistance to such schemes, and no long-term solution is expected before 2040. In the US, a site was earmarked decades ago at Nevada's Yucca Mountain, 100 miles from Las Vegas, but the Obama administration finally abandoned the scheme last year.
Some countries are further ahead, though. Sweden's nuclear operation presents itself as a model for the rest of the world, and shows how much effort a fully joined-up operation requires. After cooling on site for a year, spent fuel from Sweden's three coastal nuclear sites is transported in purpose-built casks, on a specially designed ship, to a central interim storage facility. There, robotic arms transfer the fuel into storage cassettes underwater. These cassettes are then sent to another storage pool 25 metres beneath the facility to cool for at least another 30 years. Then the waste is moved to another plant to seal in copper canisters before it arrives at its final resting place in the geological repository"......read it here

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