Fukushima shines light on U.S. problem: 63,000 tons of spent fuel

The Fukushima Daiichi disaster is focusing attention on a problem that has bedeviled Washington policymakers since the dawn of the nuclear age -- what to do with used nuclear fuel.

Currently, spent fuel -- depleted to the extent it can no longer effectively sustain a chain reaction -- is stored in large pools of water, allowing the fuel to slowly cool and preventing the release of radiation.

But events in Japan, where two of the six spent fuel pools at the Fukushima Daiichi facility were compromised, have raised questions about practices at the nation's 104 nuclear reactors, which rely on a combination of pools and dry casks to store used fuel.

"I truly believe we must re-think how we manage spent fuel," Sen. Dianne Feinstein, D-California, said at a Senate appropriations
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