The leaking reservoirs may contain 1,300 Bq/m3 of Pu-238 and 110 Bq/m3 of Cm-244

The leaking reservoirs may contain 1,300 Bq/m3 of Pu-238 and 110 Bq/m3 of Cm-244 2 The leaking reservoirs may contain 1,300 Bq/m3 of Pu-238 and 110 Bq/m3 of Cm-244

By April. 2013, Tepco has admitted 3 of 7 reservoirs are leaking the highly contaminated water into the environment at least.

From Tepco’s report of 4/26/2013, 1,300 Bq/m3 of Pu-238 and 110 Bq/m3 of Cm-244 may be in the leaking reservoirs.

Last year they attempted analyzing the filtering zeolite and sludge for radionuclides. The zeolite and sludge are used and produced with filtering the retained water. However, because these samples were too radioactive to analyze, they analyzed the retained water instead.

As a result, high level of Pu-238/239/240 and Cm-244 were measured.

Pu-238 : 1,300 Bq/m3
Pu-239/240 : 600 Bq/m3
Cm-244 : 110 Bq/m3

 

The sample is concentrated reverse osmosis waste water. The sampling date was 8/28/2012.
Because the Pu ratio (Pu-238/(Pu-239+240) ) is 2.2, it’s due to Fukushima accident.
At the moment of 3/19/2013, 270,690 m3 of this retained water is stocked in total.
Tepco hasn’t released Plutonium data of the leaking reservoirs yet. However it is highly likely that the same level of Pu-238/239/240 are contained in the reserved water.
(cf, [Leakage] Plutonium concentration in the leaking reservoirs not announced [URL])

 

3 The leaking reservoirs may contain 1,300 Bq/m3 of Pu-238 and 110 Bq/m3 of Cm-244

 

http://www.tepco.co.jp/nu/fukushima-np/roadmap/images/d130426_05-j.pdf#page=105

http://www.tepco.co.jp/cc/press/betu13_j/images/130328j0301.pdf

 

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Français :

Les réservoirs percés pourraient contenir 1 300 Bq/m³ de plutonium 238 et 110 Bq/m³ de curium 244

 

The leaking reservoirs may contain 1,300 Bq/m3 of Pu-238 and 110 Bq/m3 of Cm-244 2 The leaking reservoirs may contain 1,300 Bq/m3 of Pu-238 and 110 Bq/m3 of Cm-244

Courant avril 2013, Tepco a reconnu qu’au moins 3 de leurs 7 réservoirs fuyaient leur eau extrêmement radioactive dans l’environnement.
Selon le rapport de Tepco du 26 avril 2013, 1 300 Bq/m³ de Pu 238 et 110 Bq/m³ de Cm 244 pourraient se trouver dans les réservoirs percés.
L’an dernier, ils ont essayé d’analyser la zéolite des filtres et les boues sur les radionucléides. La zéolite et les boues sont utilisées et produites en filtrant l’eau stockée. Ils ont cependant analysé l’eau stockée à la place parce que les échantillons étaient trop radioactifs pour être analysés.

Au final, ils ont trouvé de hautes concentrations de Pu-238/239/240 et de Cm-244.
Pu 238  : 1,300 Bq/m³
Pu-239/240 : 600 Bq/m³
Cm-244 : 110 Bq/m³

L’échantillon est fait d’eau concentrée par osmose inverse. L’échantillonnage date du 28 août 2012.
C’est du à l’accident de Fukushima parce que le ratio (Pu-238/(Pu-239+240) ) est de 2,2.
Au 19 mars 2013, on a 270 690 m³ de stock de cette eau extrêmement radioactive au total.
Tepco n’a pas encore communiqué les données sur le plutonium des réservoirs percés. Il est cependant hautement probable qu’ils contiennent les mêmes concentrations en Pu-238/239/240. (cf. [Fuites] La concentration en plutonium des réservoirs qui fuient n’est pas communiquée)

3 The leaking reservoirs may contain 1,300 Bq/m3 of Pu-238 and 110 Bq/m3 of Cm-244

http://www.tepco.co.jp/nu/fukushima-np/roadmap/images/d130426_05-j.pdf#page=105
http://www.tepco.co.jp/cc/press/betu13_j/images/130328j0301.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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