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Is a 10 percent chance of disaster too high for a nuclear power station?

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JAPAN-QUAKE/Kevin Krolicki has another alarming special report from Japan today challenging the assertion that the disaster facing Fukushima Daiichi nuclear plant was beyond expections.

The report quotes Tokyo Electric’s own researchers who did a study in 2007 on the risk of tsunamis: 

The research paper concluded that there was a roughly 10 percent chance that a tsunami could test or overrun the defenses of the Fukushima Daiichi nuclear power plant within a 50-year span based on the most conservative assumptions.

But Tokyo Electric did nothing to change its safety planning based on that study, which was presented at a nuclear engineering conference in Miami in July 2007.

Battling meltdowns, nuclear and fiscal, in Japan

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JAPAN-QUAKE/Check out two special reports out of Tokyo today.

The first examines what has happened at the Fukushima Daiichi nuclear plant since Friday’s massive quake: “Mistakes, misfortune, meltdown: Japan’s quake” (PDF version here)

 Here’s how one expert sums up the situation:

“They might have been prepared for an earthquake. They might have been prepared for a tsunami. They might have been prepared for a nuclear emergency, but it was unlikely that they were prepared for all three,” said Ellen Vancko, an electric power expert with the Union of Concerned Scientists.