Former Fukushima worker “Stopping groundwater flowing to the sea may cause various problems”

High level of radiation is measured from groundwater and seawater.

Tepco suspects there is a “possibility” that the contaminated groundwater is flowing to the sea, they are building the underground wall to stop it moving to the sea.

(cf, Tepco doesn’t estimate how much more groundwater would flow into the plant by stopping it flowing to the sea [URL])

However about this construction, the former Fukushima worker Happy11311 commented on Twitter that it may cause unpredictable problems in the plant.



Tepco can’t decrease the groundwater volume to flow into the plant because they can’t get the groundwater bypass into operation without the approval of Fukushima Prefectual Federation of Fishries Co-operative Associations. Also it takes long to build the impervious wall in the mountain side.

If they stop groundwater flowing to the sea before stopping it from flowing from the mountain to the plant, the increasing retained groundwater may cause various problems. It has the highest priority to stop sea contamination for sure but..





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Français :

L’ancien de Fukushima : “Bloquer l’écoulement souterrain à la mer peut induire différents problèmes”


Une radioactivité élevée est constatée dans les eaux souterraines et marines.

Tepco suspectant qu’il soit “possible” que les eaux souterraines contaminées s’écoulent dans la mer, construit un mur souterrain pour les en empêcher. (cf. Tepco n’a pas estimé le supplément en eaux souterraines inondant la centrale s’ils les bloquent vers la mer)
Happy11311, l’ancien travailleur de Fukushima a déclaré sur Twitter à propos de cette construction que ça peut provoquer des problèmes imprévisibles dans la centrale.

Tepco ne peut pas diminuer le volume des eaux souterraines qui s’écoulent dans la centrale parce qu’ils ne peuvent pas mettre en place le pontage sans l’aval préliminaire de la Fédération des Coopératives de Pêche de la préfecture de Fukushima. De plus, il sera long de construire le mur imperméable côté montagne.
S’ils bloquent l’écoulement à la mer des eaux souterraines avant de les bloquer côté montagne, la montée des eaux souterraines va provoquer de nombreux problèmes. Il est certainement important d’arrêter la contamination de la mer mais …
— ハッピー (@Happy11311) July 11, 2013

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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.