Strontium-90 density rose up 3 × in groundwater / 490,000,000 Bq/m3 from Reactor 2 seaside

Strontium-90 density increased to be approx. 3 times much as previous month, according to Tepco.

The sample was groundwater taken from seaside of Reactor 2.

They measured 490,000,000 Bq/m3 of Sr-90 on 9/1/2014. It was 170,000,000 Bq/m3 on 8/4/2014.

Tepco announces Sr-90 density in groundwater only monthly, so it is impossible to find the continuous trend. However, it can be read that Sr-90 density is not in the decreasing trend at least.




Français :

La radioactivité du strontium 90 multipliée par 3 dans les eaux souterraines : 490 millions de Bq/m³ côté mer du réacteur 2


Selon Tepco, la radioactivité du strontium 90 s’est multipliée d’un facteur de 3 environ depuis le mois dernier.

L’échantillon a été pris dans les eaux souterraines du côté mer du réacteur 2.
Ils avaient relevé 490 000 000 (490 millions de) Bq/m³ de Sr 90 le 1er septembre 2014.
Elle était de 170 000 000 (170 millions de) Bq/m³ le 4 août 2014.
Tepco ne présente la radioactivité du Sr 90 des eaux souterraines qu’une fois par mois, il est donc impossible de suivre la progression précise. On peut néanmoins voir ci que la radioactivité en Sr 90 ne suit pas une pente descendante.

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.


November 2014