Tokyo University of Marine Science,”8,000,000,000 ~ 93,000,000,000 Bq of Cs-137 can leak to the sea every single day”


According to Tokyo University of Marine Science and Technology, Tepco was possibly having 16,100,000,000,000 Bq of Cs-137 leak to the sea from 6. 2011 to 5. 2012.

This is 73 times much as the regulated amount to discharge, but if it includes Cs-134, the total amount to have leaked would be way more than the estimate.

From their estimate, 8,000,000,000 ~ 93,000,000,000 Bq of Cs-137 leak to the sea every single day.

Seawater of Fukushima plant port is to be changed 44% on the daily basis due to the sea current and tide but the Cs-137 density has been stably around 100 Bq/L since last Spring, which is the national regulation.

Tepco comments various kinds of the tests show radioactive material is not leaking to the sea, but they will continue investigating why cesium level doesn’t decrease.


Related article..[Record breaking] 740,000 Bq/Kg from fat greenling in Fukushima plant port [URL]




Français :

L’université des Sciences Marines de Tokyo : “De 8 à 93 milliards de Bq de Cs 137 doivent s’écouler en mer tous les jours”


Selon l’université des Sciences et Technologies Marines de Tokyo, Tepco a probablement laissé s’écouler en mer 16 100 000 000 000 (seize mille cent milliards) de Bq de Cs-137 entre juin 2011 et mai 2012.

C’est 73 fois plus que la quantité autorisée mais si le Cs-134 est inclus, le total des fuites devrait alors être bien plus grand que ce qui en a été estimé.

Selon leurs estimations, de 8 à 93 milliards de Bq de Cs 137 fuient en mer chaque jour.

L’eau de mer du port de la centrale de Fukushima est tous les jours renouvelée à 44 % par les courants marins et les marées mais la concentration en Cs 137 est restée stable, autour de 100 Bq/L depuis le printemps dernier, ce qui est la limite nationale.

Tepco déclare que de nombreux types de tests montrent que les matières radioactives ne fuient pas en mer mais ils vont continuer de chercher pourquoi le niveau du césium ne diminue pas.

Article lié : [Record pulvérisé] Des sourcils gras à 740 000 Bq/kg dans le port de la centrale de Fukushima

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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.