Tepco to shut down extremely contaminated trench by freezing water / “New attempt without example”

Extremely high level of radioactive material is measured from retained water in the facility called “Trench”.

(cf, 8,700,000,000 Bq/m3 Tritium detected from seaside trench water of reactor2 [URL])

The trench is connected to the turbine buildings, contaminated water is traveling between the buildings and trench.

Though Tepco has not decided how to treat the retained water in trench, they need to separate trench from the turbine buildings as soon as possible.

On 7/22/2013, Tepco announced they plan to build a “frozen water wall” between the trench and turbine building.

Tepco is trying to build a wall by freezing water. However, this is the very first case to try to freeze water by this technology.

Tepco plans to start the feasibility test from this September.

There are also pipes to prevent the wall from stopping water, also they can’t estimate how it affect the soundness of trench.

Importantly, because they cannot enter trench after making wall, they can’t evaluate if the water is really stopped flowing to the trench.

However, Tepco has no other way to shut down trench.

Tepco to shut down extremely contaminated trench by freezing water / "New attempt without example"

 

2 Tepco to shut down extremely contaminated trench by freezing water / "New attempt without example"

 

3 Tepco to shut down extremely contaminated trench by freezing water / "New attempt without example"

 

4 Tepco to shut down extremely contaminated trench by freezing water / "New attempt without example"

 

http://www.tepco.co.jp/nu/fukushima-np/handouts/2013/images/handouts_130722_08-j.pdf

 

 

Truth is not truth because everyone believes in it. It’s the truth because it’s consistent and can’t be rebutted.

_____

Français :

Tepco va fermer la tranchée aux eaux extrêmement radioactives en congelant l’eau / “Une nouvelle tentative sans précédent”

 

Une radioactivité extrême a été relevée des eaux retenues dans ce qu’on appelle “la tranchée”. (cf. 8,7 milliards de Bq/m³ de tritium dans l’eau de la tranchée côté mer du réacteur 2)

La tranchée est reliée aux bâtiments des turbines, l’eau extrêmement radioactive s’écoule entre ces bâtiments et elle.
Bien que Tepco n’ait pas décidé comment traiter cette eau, ils doivent le plus vite possible couper la tranchée des bâtiments.
Le 22 juillet 2013, Tepco annonçait qu’ils envisageaient de faire un “mur d’eau congelée” entre la tranchée et le bâtiment de la turbine. Tepco essaye donc de construire un mur en congelant de l’eau. C’est la toute première fois qu’on essaye de congeler de l’eau ainsi.
Tepco prévoit de faire ses premiers tests de faisabilité en septembre.
Il y a aussi des tuyaux qui empêchent ce mur d’arrêter l’eau.
Ils ne peuvent pas non plus estimer l’impact sur  la fiabilité de la tranchée.
De façon grave, ils ne pourront pas vérifier si l’écoulement est effectivement stoppé parce qu’ils ne pourront pas entrer dedans après avoir construit ce mur.
Tepco ne voit cependant pas d’autre moyen pour bloquer cette tranchée.

Tepco to shut down extremely contaminated trench by freezing water / "New attempt without example"
2 Tepco to shut down extremely contaminated trench by freezing water / "New attempt without example"
3 Tepco to shut down extremely contaminated trench by freezing water / "New attempt without example"
4 Tepco to shut down extremely contaminated trench by freezing water / "New attempt without example"

http://www.tepco.co.jp/nu/fukushima-np/handouts/2013/images/handouts_130722_08-j.pdf

Ce n’est pas la vérité parce que tout le monde y croit. C’est la vérité parce que c’est cohérent et irréfutable.

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.

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