Marine soil contamination outside of 20km area hasn’t decreased since last September

According to Tepco, Cs-134/137 in marine soil (outside of 20km area) hasn’t decreased since 9/1/2012.

On 5/17/2013, Tepco published the marine soil contamination data. They took the samples (Dry soil) at 9 locations outside of 20km area.

The sampling dates are 3/5 ~ 3/23/2013. They have conducted the marine measurement for 7 times since 9/1/2012. Though there were changes in the readings, the trend is generally stable. It suggests the possibility that the radioactive material is stably discharged to the sea. However, Tepco comments “various kinds of the tests show radioactive material is not leaking to the sea“.

(cf, Tokyo University of Marine Science,”8,000,000,000 ~ 93,000,000,000 Bq of Cs-137 can leak to the sea every single day” [URL])

 

Marine soil contamination outside of 20km area hasn't decreased since last September

 

2 Marine soil contamination outside of 20km area hasn't decreased since last September

 

3 Marine soil contamination outside of 20km area hasn't decreased since last September

 

4 Marine soil contamination outside of 20km area hasn't decreased since last September

 

5 Marine soil contamination outside of 20km area hasn't decreased since last September

 

6 Marine soil contamination outside of 20km area hasn't decreased since last September

 

7 Marine soil contamination outside of 20km area hasn't decreased since last September

 

8 Marine soil contamination outside of 20km area hasn't decreased since last September

 

9 Marine soil contamination outside of 20km area hasn't decreased since last September

 

http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/ocean_soil_130517-e.pdf

 

 

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Français :

La contamination des fonds marins en dehors de la zone des 20 km n’a pas diminué depuis septembre dernier

 

Selon Tepco, le Cs 134/137 trouvé dans les fonds marins (en dehors de la zone des 20 km) n’a pas diminué depuis le 1er septembre 2012.

Le 17 mai 2013, Tepco publie les données sur la contamination des fonds marins. Ils ont pris des échantillons (sol sec) en 9 endroits externes à la zone des 20 km.
Les dates d’échantillonnage vont du 5 ai 23 mars 2013. Ils ont procédé 7 fois à des relevés marins depuis le 1er septembre 2012. Bien qu’il y ait des variations dans les résultats, la tendance est généralement stable. Ceci suggère la possibilité que des matières radioactives sont déversées en mer de façon continue. Tepco déclare néanmoins que “différents types de tests montrent que les matières radioactives ne fuient pas en mer“. (cf. L’université des Sciences Marines de Tokyo : “De 8 à 93 milliards de Bq de Cs 137 doivent s’écouler en mer tous les jours”)

Marine soil contamination outside of 20km area hasn't decreased since last September
2 Marine soil contamination outside of 20km area hasn't decreased since last September
3 Marine soil contamination outside of 20km area hasn't decreased since last September
4 Marine soil contamination outside of 20km area hasn't decreased since last September
5 Marine soil contamination outside of 20km area hasn't decreased since last September
6 Marine soil contamination outside of 20km area hasn't decreased since last September
7 Marine soil contamination outside of 20km area hasn't decreased since last September
8 Marine soil contamination outside of 20km area hasn't decreased since last September
9 Marine soil contamination outside of 20km area hasn't decreased since last September

http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/ocean_soil_130517-e.pdf

Merci pour votre soutien.
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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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