Tepco “Tritium is travelling underground with groundwater”

Tepco found significantly high level of Tritium in groundwater and in seawater.

(cf, 4500 Mega Bq/m3 of Tritium detected on the east side of reactor2, “Sr-90 data is UNDER ANALYSIS” [URL])

(cf, Tritium level in seawater spiked over double within 2 weeks [URL 2])

About 500,000,000 Bq/m3 of Tritium detected on the east side of reactor2, Tepco analyzed the cause and mechanism of how it is spreading as below.

When leakage from the reactor 2 water intake section occurred in April 2011, a part of leaked water permeated and spread into the north-side ground through the reactor 2 power cable conduit, and remains under the ground.

While cesium has been absorbed onto the soil, tritium has been moved by groundwater.






I see no hope in the old system of Japan.


Français :

Tepco “Le tritium se déplace en sous-sol par les eaux souterraines”


Tepco a trouvé de très hauts niveaux en tritium dans les eaux souterraines et dans l’eau de mer.
(cf. 4 500 MBq/m³ de tritium du côté Est du réacteur 2. C’est “ANALYSE EN COURS” pour le strontium 90)
(cf. Le niveau en tritium de l’eau de mer a plus que doublé en 2 semaines)

Environ 500 000 000 Bq/m³ de tritium ont été relevés sur le côté Est du réacteur 2, Tepco analyse la cause et le mécanisme de cette diffusion de la façon suivante :

“Lors de la fuite qu’il y a en en avril2011 à la prise d’eau du réacteur 2, une partie de l’eau de la fuite s’est infiltrée et a diffusé dans le sol au nord du réacteur 2 par la conduite du câble électrique et est restée (et reste encore) dans le sous-sol.

Alors que le césium a été fixé par le sol, le tritium a été transporté par les eaux souterraines.



Je ne vois aucun espoir dans l’ancien système japonais

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 2013