Debris stopping SFP of reactor3 from fully covered

According to Tepco, they “completed” the first phase of covering the spent fuel pool of reactor3.

The crippled reactor3 had the spent fuel pool on the top exposed to the atmosphere.

However, they can not cover the entire pool because of the sticking debris into the pool. They are to remove it in the second phase.

The English version of the report is not published yet.

On 4/18/2013, Tepco mis-operated to pick up the hatch of the skimmer surge tank in the process of removing the debris.

(cf, Tepco crane picked up the skimmer surge tank hatch by mistake during debris removal of reactor3 [URL])


↓ The red circled part can’t be covered due to the sticking debris.

Debris stopping SFP of reactor3 from fully covered



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Français :

Des gravas empêchent de couvrir complètement la SFP3


Selon Tepco, ils ont “fini” la première phase de la couverture de la piscine à combustibles usagés du réacteur 3.

Le réacteur 3 dévasté voit le dessus de sa piscine à combustibles usagés (SFP) exposée directement à l’air libre.
Ils ne peuvent cependant pas couvrir complètement la piscine à cause des décombres coincés dedans. Ils vont les retirer au cours de la deuxième phase.
La version anglaise du rapport n’est pas encore publiée.
Le 18 avril 2013, Tepco avait fait une fausse-manip en retirant la trappe du réservoir de trop-plein pendant leur retrait. (cf. La grue de Tepco a retiré par erreur la trappe du réservoir de trop-plein pendant le retrait des décombres du réacteur 3)

↓ La partie encerclée en rouge ne peut pas être recouverte à cause des gravas coincés.

Debris stopping SFP of reactor3 from fully covered

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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.


April 2013