Regulators concerned over delay in TEPCO's plan to freeze toxic water

Nuclear regulators expressed strong concern Monday about a delay in Tokyo Electric Power Co.'s plan to freeze highly toxic water building up in underground trenches at its crippled Fukushima Daiichi nuclear site, amid fears it could flow into the ocean and spread pollution.

According to the utility, a total of some 11,000 tons of highly radioactive water has flowed into the trenches through the Nos. 2 and 3 reactor turbine buildings.
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