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Japan:TEPCO begins removing cesium from spent fuel pool

Monday, November 7, 2011

Laaska News  Nov. 6 ,2011

The operator of the Fukushima Daiichi nuclear power plant has begun removing radioactive cesium from water in the spent fuel pool of one of the damaged reactors.

Tokyo Electric Power Company installed a device to remove cesium inside the cooling water of the spent fuel pool at the No.2 reactor. The device became operational on Sunday.

The concentration of radioactive cesium remains high in the cooling water of the spent fuel pools following meltdowns at the No. 1, 2, and 3 reactors.

TEPCO has been removing radioactive material from the reactors’ cooling water since July, but the No.2 reactor became the first where the procedure took place in the spent fuel pool.
TEPCO aims to reduce the concentration of radioactive material in the water from one-hundredth to one- thousandth within about a month.

There are fears that the metal pipes and walls of the spent fuel pools will erode, as seawater was used after the accident to cool down the spent fuel pools of the No. 2, 3 and 4 reactors. TEPCO has already begun removing salt from the water in the pool at the No.4 reactor, and plans to do the same at the pool of the No.2 reactor.

The company said removal of radioactive material from the pool water is necessary as a step toward removing salt. The salt concentration of the pools is not particularly high — about one-tenth of the saltwater — but erosion caused by salt may cause holes to form.

NHK.

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Laaska News.
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