Japan freezes fast breeder plans at Monju

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Monju, Japan’s prototype fast breeder reactor, has had its research budget slashed. This might not come as a big surprise, given the anti-nuke sentiment in Japan and the tattered state of its nuclear energy policy.

Monju reached criticality in 1994 but was shut down the following year because of a fire triggered by a sodium coolant leak. It took the government over 14 years to demonstrate safety, overcome scandals related to tampered video images, and garner local support for restarting operations. But then, three months after it did so in May 2010, something happened that is still difficult to fathom. In August, 3.3-tonne device fell into the reactor’s inner vessel, cutting off access to the plutonium and uranium fuel rods. After a couple failed attempts, they finally dislodged the device in June 2011.

Monju was to be the cornerstone of Japan’s plans to use MOX (mixed oxide) fuel, but those plans seem to have disintegrated. Monju already faced fiery opposition.

Source: blogs.nature.com, via Nature News Blog
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