Hydrogen concentration rapidly increased in PCV reactor1

Tepco has been injecting nitrogen gas into suppression chamber of reactor1 since 10/23/2012.

(cf. To avoid the risk of explosion, Tepco is to inject nitrogen gas to suppression chamber of reactor1 for a month)

However, the hydrogen gas concentration in PCV1 had been increasing from 10/23 to 10/30/2012.

The highest reading was 1.47 vol% (System A) and 1.48 vol% (System B) of 10/30/2012, which are 7 times much as 10/23/2012.

Hydrogen concentration is rapidly increasing in PCV reactor1

Related column..[Column] Is Tepco injecting liquid nitrogen into reactor1 ?

Source 1 2 3 4 5 6 7 8



Français :

La concentration en hydrogène a augmenté rapidement dans la PCV du réacteur 1

Tepco injecte de l’azote gazeux dans la salle de surpression du réacteur 1 depuis le 23 octobre 2012.

(cf. Pour éviter le risque d’explosion, Tepco va injecter de l’azote gazeux dans la salle de surpression du réacteur 1 pendant un mois)

Toutefois, entre le 23 et le 30 octobre 2012 la concentration en hydrogène gazeux augmente dans la PCV1 (= enceinte primaire de confinement du réacteur 1) .

Le 30 octobre 2012, au plus haut on était à 1,47 %vol (Système A) et 1,48 % vol (Système B), ce qui est 7 fois plus que le 23 octobre 2012.

Hydrogen concentration is rapidly increasing in PCV reactor1Édito lié : [Édito] Est-ce que Tepco injecte de l’azote liquide dans le réacteur 1 ?

Sources : 1 2 3 4 5 6 7 8

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.


October 2012