Radiation level in drain jumped up by 15 times after the Typhoon

On 10/17/2013, Fukushima Diary reported the highest level of all β nuclides (including Strontium-90) were detected in the drain after the Typhoon.

(cf, 2,300,000 Bq/m3 of all β nuclide detected in drain connected to the Pacific after Typhoon / Highest reading ever [URL])

One day passed, and it increased to be 15 times much as this reading.

The reading was 34,000,000 Bq/m3. It was 2,300,000 Bq/m3 on 10/16/2013.


All β density increased at the downstream of the drain as well. It was 2,200,000 Bq/m3 on 10/16/2013, but it became 28,000,000 Bq/m3 on 10/17/2013 (13 times much).


Tepco still states it was because the accumulated contamination flowed to the drain due to the Typhoon.






Couldn’t make time to get the Donation button back on by 10/14/2013. It should be reposted tomorrow. Thank you for reading this.


Français :

Après le typhon, la radioactivité du canal multipliée par 15


Le 17 octobre 2013, le Fukushima Diary publiait que le record en radioactivité β (dont le strontium 90) était relevé dans les évacuations après typhon. (cf. Après le typhon : 2,3 millions de Bq/m³ de radioactivité β dans une évacuation vers le Pacifique : Record absolu battu)

En un seul jour, ce dernier relevé est pulvérisé de 15 fois .
Le relevé est de 34 000 000 Bq/m³ (34 millions). Il était de 2 300 000 Bq/m³ (2,3 millions) le 16 octobre 2013.

La radioactivité β augmente aussi en aval du canal d’évacuation. Le 16 octobre, elle était de 2 200 000 Bq/m³ (2,2 millions) et elle passe à 28 000 000 Bq/m³ (28 millions) le lendemain (13 fois plus).

Tepco continue d’affirmer que c’est parce que la radioactivité accumulée (sur le terrain) s’est écoulée dans le canal à cause du typhon.


Pas trouvé le temps de remettre les fonctions pour les dons au 14 octobre 2013. Ça devrait revenir demain. Merci de m’avoir lu.

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.


October 2013