Earthquake prone Japan sees green in new nuclear power plants
The Japanese government is touting nuclear power plants as an easy way to cut carbon emissions. But safety is a public concern on the earthquake prone island, where a 6.9 magnitude quake hit on Saturday.
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Why It Matters
Japan is a case study in a new reality: Global reduction in the use of fossil fuels requires nations to assess their capacity for safely generating alternative forms of power – and in getting populations to buy in.
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Officials acknowledge they must work harder to win public trust. But they insist that nuclear plants are safe.
Japan now gets about a third of its electric power from some 54 nuclear power plants. It hopes to build eight more by 2018, boost capacity at its existing plants, and upgrade more plants into pluthermal ones.
The Atomic Energy Commission's Mr. Kondo and other officials say using MOX fuel allows Japan to recycle its energy resources. Japan currently sends spent fuel to Europe, where it is reprocessed into MOX fuel and shipped back. "The simple reason for using plutonium is because we want to use our resources as best as we can," Kondo says, adding that MOX fuel has been used safely in Europe for years.
He says Japan's plants were built to withstand all but a "once in 10,000 year" earthquake. But he acknowledges that since Japan switched on its first reactors in the 1960s, three quakes have produced vibrations exceeding design assumptions. (Large safety margins in construction prevented any major accidents in those cases, he says.)
According to the Ministry of Economy, Trade, and Industry (METI), nearly a third of Japan's planned carbon reduction targets by 2020 will come from nuclear power, making it the biggest source of carbon-emission cuts after energy conservation (60 percent).
In contrast, the government expects less than 6 percent of cuts to come from renewable energies.
"Nuclear power is one of the important sources of Hatoyama's target," says Katsuyuki Tada, a deputy director at METI.
For Japanese planners, the goal is to achieve a self-sufficient "nuclear cycle," with fast-breeder reactors sending spent fuel to Japan's own reprocessing plants, to be turned into MOX fuel.
But critics say it's a costly and risky pipe dream. The fast-breeder reactor program is technically daunting and has been plagued by delays; 2050 is the current target for commercial use.
Japan is set to begin reprocessing this year or next, after many delays, and hopes to produce MOX fuel by 2015.
There's also a proliferation and terrorism risk. MOX fuel is a tightly regulated material that could be used to make a "dirty bomb." It's transported by custom-built, armed ships with an elite police detail.
Disposal is also a question. Like many countries, Japan has yet to establish a permanent storage site for high-level radioactive waste, and "not in my backyard" sentiment runs high.
But as even the activists admit, those concerns don't look likely to dissuade the government.