The U.S. Navy, meanwhile, rushed to deliver fresh water to replace corrosive salt water now being used in a desperate bid to cool the plant’s overheated reactors.
Two weeks after Japan’s earthquake and tsunami disaster, the number of people killed has climbed above 10,000.
And there is a new alarm at the Fukushima Daichi nuclear power station.
Radiation levels have soared to 10,000 times above the safety limit.
As Al Jazeera’s correspondent Wayne Hay reports from the capital Tokyo, people are on edge.