NRA “Tepco’s past All β nuclide analysis may be wrong”

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Following up this article.. Tepco concealed wrong analysis of seawater for over 6 months / Tepco “Too busy to verify” [URL]


Tepco had been concealing Strontium-90 analysis data of seawater for 6 months since last June. They state Strontium-90 density was higher than All β nuclide density, which is logically impossible. Strontium-90 density was overestimated and All β nuclide analysis was correct.


However in the working group meeting of NRA (Nuclear Regulation Authority) held on 1/24/2014, the committee pointed out the possibility that the Strontium-90 analysis was correct and All β nuclide analysis was underestimated. NRA added All β nuclide analysis can include larger error. Tepco had no material to deny this possibility.


If this is true, that means Tepco measured high level of Strontium-90 (350,000 Bq/m3) in seawater of Fukushima port in June. 2013 already, but they didn’t release the data when IOC selected Tokyo as host of summer Olympic games in 2020 whether it was on purpose or not.



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La NRA : “Toutes les anciennes analyses de radioactivité β de Tepco  peuvent être fausses”
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Article lié : Tepco a caché plus de 6 mois ses faux résultats sur l’eau de mer : “Trop occupés pour vérifier”

Tepco a censuré ses résultats d’analyse du strontium 90 dans l’eau de mer pendant 6 mois à partir de juin dernier.Ils affirment que la radioactivité du strontium 90 était supérieure à celle des β nucléides, ce qui est complètement impossible, et que, donc, la radioactivité du strontium 90 a été surestimée alors que celle des β nucléides était correcte.

Cependant, au cours de la réunion du groupe de travail de la NRA (Nuclear Regulation Authority) du 24 janvier 2014, la commission a mis en avant la possibilité que les analyses du strontium 90 aient été correctes et que ce soit celles de la radioactivité β totale qui aient été sous-estimées. La NRA a ajouté que les analyse de la radioactivité β totale peut facilement inclure de plus grandes erreurs. Tepco n’avait aucun élément/argument pour pouvoir nier cette possibilité.

Si c’est vrai, ça signifie que Tepco avait déjà relevé une très forte radioactivité en strontium 90 (350 000 Bq/m³) dans l’eau du port de la centrale de Fukushima en juin 2013 mais ils n’ont pas publié ces résultats au moment où le CIO choisissait Tokyo en tant qu’hôte des jeux olympiques d’été de 2020, que ce soit volontairement ou non.

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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.


January 2014