http://www.bbc.co.uk/news/science-environment-23779561
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Fukushima leak is 'much worse than we were led to believe'
A nuclear expert has told the BBC that he believes the current water leaks at Fukushima are much worse than the authorities have stated.
Mycle Schneider is an independent consultant who has previously advised the French and German governments.
He says water is leaking out all over the site and there are no accurate figures for radiation levels.
Meanwhile the chairman of Japan's nuclear authority said that he feared there would be further leaks.
But some nuclear experts are concerned that the problem is a good deal worse than either Tepco or the Japanese government are willing to admit.
They are worried about the enormous quantities of water, used to cool the reactor cores, which are now being stored on site.
Some 1,000 tanks have been built to hold the water. But these are believed to be at around 85% of their capacity and every day an extra 400 tonnes of water are being added.
"The quantities of water they are dealing with are absolutely gigantic," said Mycle Schneider, who has consulted widely for a variety of organisations and countries on nuclear issues.
"What is the worse is the water leakage everywhere else - not just from the tanks. It is leaking out from the basements, it is leaking out from the cracks all over the place. Nobody can measure that.
The "worsening situation" at Fukushima has prompted a former Japanese ambassador to Switzerland to call for the withdrawal of Tokyo's Olympic bid.
In a letter to the UN secretary general, Mitsuhei Murata says the official radiation figures published by Tepco cannot be trusted. He says he is extremely worried about the lack of a sense of crisis in Japan and abroad.
This view is shared by Mycle Schneider, who is calling for an international taskforce for Fukushima.
"The Japanese have a problem asking for help. It is a big mistake; they badly need it."
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