6 t of contaminated water leaked from ALPS / 720,000 Bq of all β nuclide leaked to environment

On 12/17/2014, Tepco leaked 6 t of contaminated water to the environment.

They report it was water processed by ALPS (Advanced Liquid Processing System). The leakage occurred when water was transferred from ALPS to a storage tank.

From Tepco’s announcement, the operators made a wrong process documents on pipe connections to flow the contaminated water to an open pipe.

The leaked contaminated water was absorbed by soil or retained in a trench. They estimate the leaked volume was 6 t.

 

Tepco states the latest radioactive analysis shows all β nuclide density (containing Sr-90) was 89,000 ~ 120,000 Bq/m3.

They don’t report the density of any other nuclides.

 

By 12/18/2014, they collected 9 m3 of contaminated water mixed with rainfall and 5.7 m3 of soil.

Tepco says it didn’t flow to the sea but they are not taking contaminated water absorbed by soil into consideration.

 

KC4D0027

 

KC480033

 

 

http://www.tepco.co.jp/cc/press/2014/1244912_5851.html

http://www.tepco.co.jp/cc/press/2014/1244917_5851.html

http://www.tepco.co.jp/cc/press/2014/1244924_5851.html

http://www.tepco.co.jp/cc/press/2014/1244941_5851.html

http://www.tepco.co.jp/nu/fukushima-np/handouts/2014/images/handouts_141218_06-j.pdf

http://photo.tepco.co.jp/date/2014/201412-j/141217-01j.html

 

_____

Français :

6 T d’eau extrêmement radioactive ont fuit de ALPS : 720 000 Bq de radioactivité β partis dans l’environnement

 

Tepco a laissé fuir 6 T d’eau extrêmement radioactive dans l’environnement le 17 décembre 2014.

Ils rapportent que c’était de l’eau traitée par ALPS (Advanced Liquid Processing System). La fuite s’est produite alors que l’eau était en cours de transvasement depuis ALPS vers une citerne de stockage.
D’après l’avis de Tepco, un opérateur s’est trompé dans le branchement des tuyaux en faisant s’écouler l’eau par un tuyau ouvert.
L’eau de la fuite a été absorbée à la fois par le sol et dans une tranchée. Ils estiment la fuite à 6 tonnes.

Tepco affirme que les dernières analyses de la radioactivité montrent une radioactivité β (dont du Strontium 90) entre 89 000 et 120 000 Bq/m³.
Ils ne donnent la radioactivité d’aucun nucléide.

Au 18 décembre 2014, ils ont récupéré 9 m³ d’eau extrêmement radioactive mélangée à des eaux de pluies et 5,7 m³ de sol.
Tepco déclare que ça n’a pas fuit dans la mer mais ceci sans prendre en compte l’eau absorbée par le sol.

KC4D0027
KC480033

http://www.tepco.co.jp/cc/press/2014/1244912_5851.html
http://www.tepco.co.jp/cc/press/2014/1244917_5851.html
http://www.tepco.co.jp/cc/press/2014/1244924_5851.html
http://www.tepco.co.jp/cc/press/2014/1244941_5851.html
http://www.tepco.co.jp/nu/fukushima-np/handouts/2014/images/handouts_141218_06-j.pdf
http://photo.tepco.co.jp/date/2014/201412-j/141217-01j.html

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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