Sudden decrease of injecting water for reactor1~3, cause not known

 

Fukushima is not settled down at all. All they could do is just to keep giving water but because of the improvising construction, it’s becoming difficult to sustain the balance.

On 8/30/2012, the amount of water injection decreased by 10%. They turned on the valve of pump to increase the water amount, but the reason is not verified yet.

Tepco announced the water amount decreased from 15:00 to 16:30. It happened to reactor 1 ~3, it wasn’t observed at the check of 14:00.

Reactor1, the safety limit of water amount to inject is 4.3 tones/h but it dropped from 4.9 to 4 tones/h.
Reactor2, the safety limit of water amount to inject is 6.1 tones/h but it dropped from 7 to 5.5 tones/h.
Reactor3, the safety limit of water amount to inject is 6.1 tones/h but it dropped from 7 to 5.6 tones/h.

Though the water temperature didn’t go up supposedly, the cause is not verified yet.

Source 1 2

 

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Français :

Chute brutale de l’injection de l’eau des réacteurs 1 à 3, cause inconnue

Fukushima n’est toujours pas stabilisée du tout. Tout ce qu’ils peuvent faire c’est seulement irriguer les réacteurs mais à cause des bricolages de la reconstruction d’urgence, l’équilibre devient difficile à tenir.

Le 30 août 2012, la quantité d’eau injectée dimunue de 10%. Ils ont ouvert la vanne de la pompe pour augmenter le débit mais la cause de sa perte n’est toujours pas déterminée.

Tepco annonce que le débit a diminué de 15:00 à 16:30. Ça s’est passé dans les réacteurs 1 à 3, ce n’était pas visible lors des contrôles de 14:00.

Réacteur 1, la limite de sécurité du débit injecté est de 4,3 tonnes/h mais elle a chuté de 4,9 à 4 T/h.
Réacteur 2, la limite de sécurité du débit injecté est de 6,1 tonnes/h mais elle a chuté de 7 à 5,5 T/h.
Réacteur 3, la limite de sécurité du débit injecté est de 6,1 tonnes/h mais elle a chuté de 7 à 5,6 T/h.

Bien que la température de l’eau n’ait soi-disant pas augmenté, la cause n’est pas encore établie.

Source 1 2

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.

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