Concrete fails to plug leak at Fukushima nuclear plant
By Julie Makinen
An operator at Fukushima Daiichi nuclear power plant says highly radioactive water from a pit near a reactor continues to leak into the ocean. Officials plan to explore using a polymer in another attempt to stop the flow.
The operator of the Fukushima Daiichi nuclear power complex said Saturday that highly radioactive water was leaking from a pit near a reactor into the ocean, which may partially explain the high levels of radioactivity that have been found in seawater off the coast.
Tokyo Electric Power Co. said it had detected an 8-inch crack in the concrete pit holding power cables near reactor No. 2 and was working to seal the fracture. Tepco said the water was coming directly from the reactor and the radiation rate was 1,000 millisieverts an hour. The annual limit of radiation exposure allowed for Fukushima workers is 250 millisieverts.