Tepco “Molten fuel in Reactor 3 is only 26cm to the outside of primary containment vessel”
Photo : Reactor 3 on 4/10/2011. When this picture was taken, nuclear fuel was already melting out of the vessel.
Following up this article..
Tepco admitted most part of fuel melted out of reactor pressure vessel in Reactor 3 [URL]
On 8/6/2014, Tepco announced they assume “most part” of fuel melted out of reactor pressure vessel in Reactor 3.
This is their latest result of existing data analysis.
From their assumption, the emergency coolant system stopped at 20:00 of 3/12/2011 before the workers switched to pump cooling manually.
As a result, fuel started melting down early in the next morning, when was 5 hours earlier than previous assumption.
The analysis says the molten fuel started breaking out of reactor pressure vessel by 7:00 of 3/14/2011. Most part of it dropped to the bottom of primary containment vessel.
However Tepco still doesn’t announce the possibility that the molten fuel even melted out of the primary containment vessel to the environment.
From Tepco’s announcement, the nuclear fuel melted out of the reactor pressure vessel dropped to the bottom of primary containment vessel of Reactor 3.
They estimate it penetrated the base concrete approx. 2m deep, and reached only 26cm to the steel wall of primary containment vessel.
The exact basis of this assumption is not announced. This simulated situation is the one of March 2011.
It is not clear how deeper the molten fuel penetrated after then.
http://www.tepco.co.jp/tepconews/library/archive-j.html
Iori MochizukiYou read this now because we’ve been surviving until today.
_____
Français :
Tepco : “Le corium du réacteur 3 n’est qu’à 26 cm de l’extérieur de l’enceinte de confinement primaire”
Photo : Le réacteur 3 le 10 avril 2011. Le combustible nucléaire fondu était déjà en dehors de l’enceinte lorsque cette photo a été prise.
Article lié :
Le 6 août 2014, Tepco annonce qu’ils reconnaissent que “la majeure partie” du combustible fondu du réacteur 3 s’est écoulée hors de son enceinte pressurisée.
Ce sont les tous derniers résultats connus de leurs analyses.Selon leur hypothèse, le système de refroidissement d’urgence s’est arrêté le 12 mars 2011 à 20:00, avant que des travailleurs basculent sur un pompage manuel pour refroidir.
Au final, le combustible a commencé à fondre au début du matin suivant, 5 heures plus tôt que selon l’hypothèse précédente.
L’analyse dit que le combustible fondu a commencé à sortir de l’enceinte pressurisée le 14 mars 2011 vers 7:00. L’essentiel s’en est écoulé au fond de l’enceinte primaire.Néanmoins Tepco ne reconnaît toujours pas que le combustible fondu a même percé l’enceinte primaire pour entrer dans l’environnement.
Selon le communiqué de Tepco, le combustible fondu est sorti de l’enceinte pressurisée du réacteur, puis est tombé au fond de l’enceinte primaire de confinement du réacteur 3.
Ils estiment qu’il est entré dans la base en béton sur environ 2 m de profondeur et n’a progressé que de 26 cm vers le mur en acier de l’enceinte de confinement primaire.
La base exacte de cette affirmation n’est pas communiquée. Cette simulation date de mars 2011. On ne sait pas à quelle profondeur le corium s’est enfoncé ensuite.
http://www.tepco.co.jp/tepconews/library/archive-j.html
Vous pouvez lire ceci parce que nous avons survécu jusqu’à aujourd’hui.
The post Tepco “Molten fuel in Reactor 3 is only 26cm to the outside of primary containment vessel” appeared first on Fukushima Diary.
Source: http://fukushima-diary.com/2014/08/tepco-molten-fuel-reactor-3-26cm-outside-primary-containment-vessel/
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