The highest density of all β nuclide detected outside of Fukushima plant port

On 6/17/2015, Tepco announced they measured the highest density of all β nuclide (including Sr-90) in seawater outside of Fukushima plant port.

The sampling date was 6/15/2015. The density was 16,000 – 24,000 Bq/m3.

The sampling locations were the North-East, East, and South-East of the exit of the port. Especially in the South-East of the port exit, all β nuclide had always been under detectable level until this time.

The distance of these sampling locations and the port exit is not announced.

The Strontium-90 density has not been reported either.




Français :

Record de radioactivité β en mer en dehors du port de la centrale


Le 17 juin 2015, Tepco annonce avoir relevé un record de radioactivité β (dont le Sr-90) dans l’eau de mer à l’extérieur du port de la centrale.

L’échantillon est du 15 juin 2015. La radioactivité entre 16 000 et 24 000 Bq/m³.
Les échantillons proviennent du nord-est, de l’est, et du sud-est de la sortie du port. Au sud-est en particulier,la radioactivité β était toujours restée en-dessous du détectable jusqu’à présent.
La distance entre le port et les endroits échantillonnés n’est pas précisée.
La radioactivité en strontium 90 n’est pas précisée non plus.

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.


June 2015