The highest I-131 density of this year detected in 2 Fukushima sewage plants

According to Fukushima sewage public corporation, this July over 1,000 Bq/Kg of Iodine-131 was detected in dry sewage sludge. The sewage plant is located in Da-te District of Fukushima prefecture.

High level of I-131 was measured this May, however this reading of July is the highest density of this year. (cf, Significant level of I-131 detected from dry sludge of Fukushima sewage plant after rain in May [URL])

I-131 was detected from the samples collected from 7/9/2015 to 7/29/2015.

The highest reading was 1,038.4 Bq/Kg of 7/11/2015. The highest density of Cs-134 was also detected, which was 44 Bq/Kg the same day. It rained on 7/8/2015 but the precipitation was only 10.5 mm.

Also in another sewage plant in Koriyama city, 889 Bq/Kg of I-131 was detected from dry sewage sludge. This is also the highest reading of this plant. I-131 kept on being detected for 15 days of this July.




Français :

2 records annuels en I-131 dans 2 stations d’épuration de Fukushima


Selon la société publique de gestion des eaux usées de Fukushima, en juillet dernier ils ont relevé plus de 1 000 Bq/kg d’iode 131 dans les boues d’épuration séchées. La station d’épuration est situé dans le  district de Da-te de la préfecture de Fukushima.

Une forte radioactivité en iode 131 avait été relevée en mai mais ce relevé ce juillet constitue le record pour cette année. (cf. Forte radioactivité en iode 131 dans les boues sèches d’une station d’épuration de Fukushima après les pluies de mai)
L’iode 131 a été détecté dans les échantillons prélevés entre le 9 et le 29 juillet 2015. Le record en est de 1 038,4 Bq/kg le 11 juillet 2015.
Le record en radioactivité au Cs-134 a été détecté le même. jour également, soit 44 Bq/kg. Il avait plu le 8 juillet 2015 mais les précipitations ont été de 10,5 mm seulement.

Dans une autre station d’épuration, de la ville de Koriyama, on a relevé 889 Bq/kg d’iode 131 dans les boues d’épuration séchées. C’est également le record de l’année pour cette station. L’iode 131 continué à être détecté pendant 15 jours en juillet dernier.

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.


September 2015