Tuesday, October 22, 2013

Radiation in rainwater overflow spikes at No. 1 | The Japan Times

Rainwater that overflowed Sunday from the concrete-ringed enclosures around the water storage tanks at the Fukushima No. 1 nuclear plant had excessively high radiation readings, Tokyo Electric Power Co. disclosed Monday.

Strontium-90 in the rainwater, which had accumulated from recent downpours, was above the limit of 10 becquerels per liter near six tank clusters, with the reading in one area reaching 710 becquerels, Tepco said.

It said some of the radioactive water has seeped into the ground, but noted that most of the affected surface water probably didn’t flow to the Pacific Ocean because barrier mounds have been built outside the flood enclosures to prevent water from entering the drainage channels that lead to the sea.

Yet Tepco couldn’t totally rule out that surface water had reached the sea.

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Comment: That last line above - - - - - "Doh!"

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