Tritium is possibly flowing in the deeper underground stream

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Tritium density is higher in the deeper ground layer of seaside of reactor1. Tepco reported it to NRA (Nuclear Regulation Authority) on 1/24/2014.

From Tepco’s analysis, 74,000,000 Bq/m3 of Tritium was measured from groundwater of 13m underground. This was over 4 times much as the one of 5m underground.

The samples were taken from this December to January.


Significant level of Tritium and Cesium-134/137 were measured from groundwater of 25m underground. (cf, 480,000 Bq/m3 of Tritium detected from 25m underground of Fukushima plant [URL])

The committee of the working group of NRA admitted the possibility that Tritium is flowing in the deeper layer of the ground.



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Français :

Du tritium dans la couche souterraine la plus profonde
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La radioactivité en tritium est plus forte dans la couche la plus profonde du côté mer du réacteur 1. Tepco l’a rapporté à la NRA (Nuclear Regulation Authority) le 24 janvier 2014.

Selon les analyses de Tepco, 74 000 000 (74 millions) de Bq/m³ de tritium ont été relevés dans les eaux souterraines à 13 m de profondeur. C’est plus de 4 fois au-dessus de celles de 5 m de profondeur.
Les échantillons ont été pris entre décembre dernier et janvier.
Une radioactivité importante en tritium et césium 134/137 a été relevée dans les eaux à 25 m de profondeur. (cf. 480 000 Bq/m³ de tritium à 25 m de profondeur sous la centrale de Fukushima)

La coordination du groupe de travail de la NRA a reconnu la possibilité d’un écoulement de tritium dans les couches les plus profondes du sol.

Merci de lire le Fukushima Diary. Votre soutien est l’énergie de mon travail opiniâtre.

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.


January 2014