Radioactivity density in reactor1 sub-drain has been stably high since late Feb 2013

Radioactivity density in reactor1 sub-drain has been stably high since late Feb 2013

 

According to Tepco, the radioactivity density of reactor1 sub-drain increased in the end of February 2013, and it hasn’t been decreasing until 5/14/2013.

Usually they pump up the ground water from sub-drain to reduce the buoyancy against the reactor building. Reactor1 and 2 have 27 sub-drains in total.

However, since 311, they cannot use sub-drain anymore, but only analyze the radioactive material contained in water.

The increasing radioactive density in sub-drain suggest the leakage of contaminated water is increasing in reactor1.

 

2 Radioactivity density in reactor1 sub-drain has been stably high since late Feb 2013

 

http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/subsurface_130514-e.pdf

 

 

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Français :

La radioactivité dans les évacuations du réacteur 1 reste stable après augmentation depuis fin février 2013

 

Radioactivity density in reactor1 sub-drain has been stably high since late Feb 2013

Selon Tepco, la radioactivité du réseau d’évacuation du réacteur 1 a augmenté fin février 2013 et au 14 mai 2013, elle n’a toujours pas décru.

Ils pompent habituellement l’eau souterraine de l’évacuation pour réduire la pression de l’eau contre le bâtiment du réacteur. Les réacteurs 1 et 2 ont 27 évacuations au total.
Ils ne peuvent cependant plus les utiliser depuis le 11-3 mais ils se contentent d’analyser la radioactivité de l’eau qu’elles contiennent.
L’augmentation de la radioactivité dans les évacuations suggère que la fuite d’eau radioactive du réacteur 1 est en train d’augmenter.

2 Radioactivity density in reactor1 sub-drain has been stably high since late Feb 2013

http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/subsurface_130514-e.pdf

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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.

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