Tepco had been wrongly analyzing Strontium-90 since 2003

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Following up this article.. NRA “Tepco’s past All β nuclide analysis may be wrong” [URL]


One of the measurement instruments has been having the wrong setting to analyze Strontium-90 even after 311, according to Tepco.

Tepco found the suspicious readings of Strontium-90 in contaminated water in June of 2013, they haven’t been announcing the Strontium-90 data for over 6 months to say they were investigating the reason.


The measurement instrument is located in the laboratory of reactor5, 6. It has been having the wrong setting since it was installed in 2003.

Even after 311, Tepco didn’t conduct any adjustment.

Tepco states Strontium-90 was overestimated due to the wrong setting.






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Français :

Depuis 2003 Tepco a toujours fait des analyses du strontium 90 erronées
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Article lié : La NRA : “Toutes les anciennes analyses de radioactivité β de Tepco peuvent être fausses”

Selon Tepco, l’un des instruments de mesure du strontium 90 a mal été configuré depuis avant le 11-3.

Tepco avait découvert en juin 2013 des relevés douteurs de strontium 90 dans des eaux contaminées, ils n’avaient plus publié de résultats de strontium 90 pendant plus de 6 mois en disant qu’ils en cherchaient la raison.

L’instrument de mesure est situé dans le laboratoire des réacteurs 5 et 6. Il est mal configuré depuis son installation en 2003.Tepco n’a fait aucune rectification même après le 11-3.
Tepco affirme que le strontium 90 était surestimé à cause de cette erreur de configuration.


Note : Si vous êtes de la grande presse internationale, ne lisez pas ce site sans avoir préalablement pris contact avec moi.

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.


February 2014