Fukushima nuclear power plant accident, earnest finally groundwater contamination
The 9th, TEPCO revealed that the well of pollution monitoring water intake near Unit 2 Fukushima Daiichi nuclear power plant, radioactive cesium of 27,000 becquerels per liter was detected in groundwater collected in the 8th . Compared to minutes were taken at the same place on the 5th, the concentration was increased to 90 times nearby.
Including groundwater around, until now, has not been detected almost cesium. Possibility of contamination due to high concentration contaminated water accumulated in (underground tunnel) trench and building underground is growing has increased.
From (anti-vertical) pit water intake near that became a big issue high concentration pollution large amount of water to flow out to sea in April two years ago, detection location of this time, dug new to the location of the 9 m the building side well.
Radioactive substances that emit beta radiation, such as strontium from water extraction of the 5th is 900 000 becquerels per liter of detection, but this case, the value of the cesium was 309 becquerel stops. However, on such as strontium has been detected at a high level and still 890 000 becquerels, cesium 134 9000 Becquerel, the 137 has detected a total of 27 000 Bq of 18 000 Bq from water harvesting the 8th.
So far, part of the high concentration contaminated water leaked two years ago remain in the soil, it remains in the soil cesium contained therein are combined with soil particles, such as strontium out well by being pushed out to the groundwater TEPCO I have shown the view was probably have is high.
However, since the cesium was detected values much higher than ever before, the possibility of high concentrations of water leaking from the trench leading to them and the turbine building basement was higher.
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TEPCO person who press conference in Fukushima prefectural government said, "There is also a possibility that the mud that has adsorbed. Radioactive cesium do not know mixed in the water, why the concentration is increased to re-measure the water" he said. Potential marine spill is to be "determined in conjunction with the test results of seawater", shows the idea of the rush pollution prevention measures, such as ground improvement of the seawall.
(Chunichi Shimbun)
http://www.chunichi.co.jp/s/article/2013070990112041.html
> I do not know why "concentration rises
Convergence of accident such as Unlikely to companies that the excuse of this degree
