23,800,000,000 Bq/m3 of Cs-134/137 was measured from retained water in reactor2

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High level of contaminated water is still retained in the basement floor of reactor2.

Tepco measured 23,800,000,000 Bq/m3 of Cesium-134/137 from the retained water. The sample was taken on 1/15/2014. 69,000,000,000 Bq/m3 of All β (including Strontium-90) was also measured from the same sample.


From the retained water in reactor1, they also measured 3,700,000,000 Bq/m3 of Cesium-134/137, but it was lower than reactor2.

Reactor2 building remains relatively sound. It is not known what happened in 311, but the contamination level can be worse than other reactors.

(cf, Tepco to investigate the operating floor of reactor2 by drilling from the top of the building [URL])





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Français :

23,8 milliards de Bq/m³ de césium 134/137 dans les eaux retenues dans le réacteur 2
Note : Si vous êtes de la grande presse internationale, ne lisez pas ce site sans avoir préalablement pris contact avec moi.


Il y a toujours des eaux extrêmement radioactives dans l’étage le plus bas du réacteur 2.

Tepco a relevé 23 800 000 000 Bq/m³ (23,8 milliards) de césium-134/137 dans ces eaux. L’échantillon a été pris le 15 janvier 2014. La radioactivité β (dont le strontium 90) titrait à 69 000 000 000 Bq/m³ (69 milliards)  à partir du même échantillon.

Dans les eaux équivalentes du réacteur 1 ils avaient relevé 3,7 milliards de Bq/m³ de césium 134/137 mais c’était moins fort que dans le réacteur 2.
Le bâtiment du réacteur 2 reste relativement fiable. On ne sait pas ce qui s’y est passé en mars 2011 mais les niveaux de radioactivité sont parfois pires que ceux de tous les autres réacteurs.  (cf. Tepco va explorer l’étage opérationnel du réacteur 2 en forant le toit du bâtiment)


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About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.


January 2014