650Bq/Kg of I-131 still measured from sewage sludge of Fukushima

(Photo) Radioactive sewage sludge storaged at sewage plant. Posted by Fukushima prefectural government. 


High level of I-131 was measured for 11 days this January in dry sewage sludge, Fukushima prefectural government announced on 2/26/2016.

According to the prefectural government, the sewage plant is in Da-te District of Fukushima prefecture.

The highest density was 648.1 Bq/Kg. It was continuously detected from 1/21 to 1/31/2016. The data of February has not been published yet.

Along with I-131, Cs-134/137 density also increase and became the highest, which was 111 Bq/Kg on the same day when I-131 density became the highest.

Both of the highest densities were detected about 1 week after the rain (57.0 mm) to strongly implies the possibility that the discharged radioactive material is carried by the wind and fall with rain.






Français :

Toujours 650Bq/kg d’Iode 131 dans une station d’épuration de Fukushima


(Photo) Boues d’épuration radioactives stockées à la station d’épuration. Publiée par la préfecture de Fukushima.

Le 26 février 2016 la préfecture de Fukushima avait déclaré qu’en janvier dernier, une forte radioactivité à l’iode 131 était relevée pendant 11 jours dans une station d’épuration.

Selon la préfecture de Fukushima, la station d’épuration est dans le district de Da-te de la préfecture.
Le record a été de 648,1 Bq/kg. Cette radioactivité a été relevée sans interruption du 21 au 31 janvier 2016. Les relevés de février ne sont pas encore publiés.
En même temps que l’Iode 131, la radioactivité en Cs 134/137 a aussi augmenté jusqu’à atteindre 111 Bq/kg le jour où l’I-131 atteignait son record.
Ces deux records ont été relevés environ une semaine après des pluies (57 mm), ce qui suggère fortement que les matières radioactives en cause ont été transportées par le vent puis soient retombées avec la pluie.


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.


March 2016