260 tones of contaminated water leaked from reservoir No.1 ?

According to Tepco, reservoir No. 1 is probably leaking the highly contaminated water as well.

(cf, [Out of control] Tepco admitted the possibility reservoir No.1 also leaking [URL])

Before they officially admitted the leakage, Tepco published this report on 4/9/2013.

This is follow-up information regarding the water leak from the underground reservoirs at Fukushima Daiichi NPS.

In response to the leakage from the underground reservoir No.2, the water in the underground reservoir No.2 is being transferred to the underground reservoir No.6 utilizing a permanent pump. At 10:00 AM today, water transfer from the underground reservoir No.2 to No.1 utilizing 4 temporary pumps has been started.

The water levels of the underground reservoir No.1, No.2 and No.6 as of 10:00 AM today are approx. 55%, 31% and 33% respectively.

As previously announced in the following up information No.17, the water level of the underground reservoir No.1 as of 7:02 AM on April 8 was 57%. However, it is assumed that some water has returned to the underground reservoir No.2 because of siphon effect due to the water level difference. No problem was found with the sampling results of the water in the surrounding area of the underground reservoir No.1.

 

Tepco states the water was returned from No.1 to No.2 by siphon effect but the water level of No. 2 kept on decreasing linearly. *1

They observed the water level decreased from 57% to 55% in reservoir No.1. The capacity of No. 1 is 13,000 m3.

Roughly estimating, if 2% of the 13,000 m3 leaked, it’s 260 m3.

 

↓ *1 [URL]

260 tones of contaminated water leaked from reservoir No.1 ?

 

http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2013/images/handouts_130407_01-e.pdf

http://www.tepco.co.jp/en/press/corp-com/release/2013/1226208_5130.html

 

 

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Français :

Une fuite de 260 tonnes d’eau contaminée au réservoir N°1 ?

 

Selon Tepco, le réservoir N°1 est sans doute aussi en train de perdre son eau hautement radioactive. (cf [Perte de contrôle] Tepco admet la possibilité que le réservoir N°1 fuit aussi)
Avant leur reconnaissance officielle de la fuite, Tepco avait publié ce rapport, le 9 avril 2013 :

Voici un suivi d’information concernant la fuite d’eau par le sol des réservoirs de Fukushima Daiichi NPS.

En réponse à la fuite du réservoir enfoui N°2, l’eau du réservoir enfoui N°2 est en cours de transfert dans le réservoir enfoui N°6 en utilisant une pompe permanente. Aujourd’hui à 10:00 AM, on a commencé le transfert de l’eau du réservoir enfoui N°2 vers le N°1 en utilisant 4 pompes provisoires.

Aujourd’hui à 10:00 AM, les niveaux d’eau des réservoir enfouis N°1, N°2 et N°6 étaient approx. à 55%, 31% et 33% respectivement.

Comme précédemment annoncé dans l’information de suivi N°17, le niveau de l’eau du réservoir enfoui N°1 était de 57% le 8 avril à 7:02 AM. Cependant, on présume qu’un peu d’eau est revenue dans le réservoir enfoui N°2 par effet de siphon à cause de la différence des niveaux d’eau. Aucun problème n’a été relevé dans les résultats des échantillonnages de l’eau autour du réservoir enfoui N°1.

 

Tepco affirme que l’eau était transvasée du N°1 au N°2 par effet siphon mais le niveau de l’eau dans le N°2 a continué de descendre de façon linéaire. *1
Ils ont observé que le niveau de l’eau dans le réservoir était descendu de 57% à 55% dans le réservoir N°1. La capacité du N°1 est de 13 000 m³.
En estimation grossière, si 2 % de ces 13 000 m³ ont fuit, ça représente 260 m³.

↓ *1 [URL]

260 tones of contaminated water leaked from reservoir No.1 ?

http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2013/images/handouts_130407_01-e.pdf
http://www.tepco.co.jp/en/press/corp-com/release/2013/1226208_5130.html

Merci de penser à un don.

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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