Xe-133/135 detected from gas sample of reactor1,2,3, amount not announced, Tepco “Spontaneous fission”

Related to this article..Ag-110m detected from gas sample of reactor1 and 3, “The boiling point is 2,164℃” [URL]

From the analysis of PCV gas sampling, Tepco announced they detected Xe-133/135 from charcoal filter of reactor1, 2 and 3.

These are fission products of Uranium. Half-life of Xe-133 is 5.25 days, half-life of Xe-135 is 9.2 hours.

Tepco asserted it is due to the spontaneous fission, but the amount was not announced.

They reported it is the same level of the volume as detected in the outlet of the gas management equipment. It suggests Xe-133/135 are emit to the atmosphere without filtering.





Monthly donation is also very helpful !


Français :

Du xénon 133/135 relevé dans les échantillons d’air des réacteurs 1,2,3; quantités non données; Tepco : “fissions spontanées”


Article lié : De l’argent 110m relevé dans le gaz des réacteurs 1 et 3 : Il vaporise à 2 164 °C

Tepco annonce qu’ils ont relevé du Xénon 133/135 dans le filtre à charbon des réacteurs 1, 2 et 3 par l’analyse des échantillon d’air des PCV (enceinte primaire de confinement).
Ce sont des produits de fission de l’uranium. La demie-vie du Xe-133 est de 5,25 jours, celle du Xe-135 est de 9,2 heures.
Tepco affirme que c’est à cause de fissions spontanées mais les quantités ne sont pas données.
Ils rapportent que c’est du même niveau que ce qu’on a en sortie des ventilations. Ceci suggère que le Xe 133/135 est expulsé dans l’atmosphère sans filtrage.



Les virement mensuels aident aussi beaucoup !

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.


June 2013