Tepco admitted leakage from reactor2&3 to the trench,”150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h”

On 7/10/2013, Tepco admitted contaminated water is leaking from the turbine buildings of reactor2 and 3 to the trench, which is outside of the building.

Tepco took the sample from the shaft of the trench connected to reactor3 and analyzed it on 7/11/2013.

They measured 100,000,000,000 Bq/m3 of Cs-137 and 50,000,000,000 of Cs-134. In total, Cs-134/137 density was 150,000,000,000 Bq/m3 at 1m depth in the shaft. The salt density was 11,000 ppm.

The highest atmospheric dose was 0.1 Sv/h above the surface of the retained contaminated water.

As a reason to assume the contaminated water is leaking from reactor2&3 to the trench, Tepco pointed out the water level of the trench shaft and turbine buildings are in sync. Also, the contamination level is the same.

Tepco announced the Cs-134/137 density of the trench to reactor3, but they haven’t announced Cs-134 density of the trench to reactor2.

Tepco states contaminated water is not leaking from reactor1 and 4 to the trenches.

Tepco has been letting 400 tones of groundwater flow into the basement of the plant everyday. It was to stop contaminated water overflow to the outside of the buildings but this means the contaminated water was already flowing out of the buildings.

 

Tepco admitted leakage from reactor2&3 to the trench,"150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h"

 

2 Tepco admitted leakage from reactor2&3 to the trench,"150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h"

 

3 Tepco admitted leakage from reactor2&3 to the trench,"150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h"

 

4 Tepco admitted leakage from reactor2&3 to the trench,"150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h"

 

5 Tepco admitted leakage from reactor2&3 to the trench,"150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h"

 

http://www.tepco.co.jp/nu/fukushima-np/handouts/2013/images/handouts_130711_04-j.pdf

 

 

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Français :

Tepco reconnait la fuite des réacteurs  2 & 3 vers la tranchée : “150 milliards de Bq/m³ de Cs-134/137, 0,1  Sv/h”

 

Le 10 juillet 2013, Tepco a reconnu que de l’eau extrêmement radioactive fuyait des bâtiments de la turbine des réacteurs 2 et 3 vers une tranchée qui se trouve à l’extérieur du bâtiment.

Tepco a pris l’échantillon près du tuyau reliant la tranchée au réacteur 3 et l’a analysé le 11 juillet 2013.
Ils ont relevé 100 000 000 000 Bq/m³ (cent milliards) de Cs-137 et 50 000 000 000 (50 milliards) de Cs-134.  Au total, la concentration en césium 134/137 y est de 150 milliards de Bq/m³ à 1 m de profondeur dans le tuyau. La salinité est de 11 000 ppm.
Le record de radioactivité atmosphérique était de 0,1 Sv/h au dessus de la surface des eaux retenues.
Comme raison pour assumer que les eaux extrêmement radioactives fuit des réacteurs  2 & 3 vers la tranchée, Tepco a mis en avant que le niveau de l’eau dans la tranchée et dans les bâtiments des turbines est le même. Le niveau de contamination est également le même.
Tepco a annoncé que la concentration en Cs-134/137 entre cette tranchée et le réacteur 3 mais ils ne donnent pas la concentration entre la tranchée et le réacteur 2.
Tepco affirme que les eaux extrêmement radioactives ne fuient pas des réacteurs 1 et 4 vers les tranchées.
Tepco a laissé 400 tonnes d’eaux souterraines inonder tous les jours les fondations de la centrale. C’était pour empêcher les eaux extrêmement radioactives de s’écouler hors des bâtiments mais ça signifie que ces eaux contaminées s’écoulent déjà hors des bâtiments.

Tepco admitted leakage from reactor2&3 to the trench,"150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h"
2 Tepco admitted leakage from reactor2&3 to the trench,"150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h"
3 Tepco admitted leakage from reactor2&3 to the trench,"150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h"
4 Tepco admitted leakage from reactor2&3 to the trench,"150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h"
5 Tepco admitted leakage from reactor2&3 to the trench,"150,000,000,000Bq/m3 of Cs-134/137, 0.1 Sv/h"

http://www.tepco.co.jp/nu/fukushima-np/handouts/2013/images/handouts_130711_04-j.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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