Sr-90 density jumped up over 10 times in groundwater beside Reactor 2

On 2/5/2016, Tepco reported Strontium-90 density spiked 1,103% in groundwater beside Reactor 2.

The sample was collected between the plant port and Reactor 2. The sampling well is one of few observation holes situated outside the underground wall.

The reading was 3,200,000 Bq/m3. The previous highest reading was 290,000 Bq/m3.

54,000,000 Bq/m3 of Sr-90 was also detected from the next observation hole, which is the highest reading from this observation well.

There are 5 wells in this area outside of the underground wall, but Tepco is concealing the data of 2 of these wells for some reason.




Français :

La radioactivité au strontium 90 multipliée par plus de 10 dans les eaux souterraines à côté du réacteur 2


Le 5 février 2016, Tepco rapporte que la radioactivité en strontium 90 est montée de 1103% dans les eaux souterraines proches du réacteur 2.

L’échantillon a été pris entre le port de la centrale et le réacteur 2. Le puisard d’échantillonnage est l’un des rares trous d’observation situés hors du périmètre du mur souterrain.
Le relevé est de 3 200 000 Bq/m³. Le précédent record était de 290 000 Bq/m³.
54 000 000 Bq/m³ de Sr 90 ont aussi été relevés dans le trou d’observation voisin, ce qui est aussi le record pour lui.
Il existe 5 puisards dans cette zone à l’extérieur du mur souterrain et Tepco cache les données de 2 d’entre eux.

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.


February 2016