http://www.bloomberg.com/news/2011-03-24/u-s-aircraft-carrier-moved-from-yokosuka-port-to-avoid-radiation-traces.htmlThe aircraft carrier USS George Washington was moved this week from its Japanese port to avoid a potentially costly and complex future cleanup to remove traces of radiation, the Navy’s top uniformed official said yesterday.
The carrier did not face an acute, near-term radiation threat that would have forced its departure from Yokosuka, about 175 miles (280 kilometers) south of the crippled Fukushima Dai- Ichi nuclear plant, said Chief of Naval Operations Admiral Gary Roughead.
Rather, Roughead said, he wanted to move the flattop because even residual traces of radiation on a nuclear-powered warship, while not harmful from a health standpoint, could be mistaken as a sign of a shipboard nuclear leak requiring identification and cleanup, he said.
“The fact that somebody could go aboard and detect some trace, I think, injects challenges,” he said in an interview. “When you think of an aircraft carrier that has literally thousands of miles of ventilation ducting in it, you’ve got a significant cleaning issue.
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Last week the Navy also imposed a 100 nm no-fly zone for its aircraft around the Fukushima NPP...