500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2

On 6/19/2013, Tepco announced they measured 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 from the groundwater taken from the east side of reactor2 turbine building. The sample was taken on 5/24/2013.

The radiation level in seawater doesn’t decrease. In order to investigate it, Tepco drilled 3 observation holes on the east side of the reactor1~4 turbine buildings.

As a result, significantly high level of radioactive water Tritium and Strontium-90 were detected. Tepco hasn’t published Sr-90 readings after 5/31/2013 as “under analysis”.

 

Sampling date : 12/8/2012
Tritium : 29,000,000 Bq/m3
Sr-90 : 8,600 Bq/m3
Sampling date : 5/24/2013
Tritium : 500,000,000 Bq/m3
Sr-90 : 1,000,000 Bq/m3

 

Sampling date : 5/31/2013
Tritium : 460,000,000 Bq/m3
Sr-90 : Under analysis

 

Sampling date : 6/7/2013
(Sample 1)
Tritium : 500,000,000 Bq/m3
Sr-90 : Under analysis

 

Sampling date : 6/7/2013
(Sample 2)
Tritium : 470,000,000 Bq/m3
Sr-90 : Under analysis

 

Tepco states it is due to the contaminated water leakage out to the screen pump room of reactor2, which happened on 4/2/2013.

In order to investigate the spread of the contaminated water, Tepco drilled 4 more observation holes.

Tepco is planning to improve the ground by injecting chemical grout and fill the voids of crushed stone layer foundation.

 

500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
2 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
3 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
4 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
5 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
6 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
7 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
8 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
9 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
10 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
11 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
12 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
13 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
14 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
15 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
16 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
17 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2

http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2013/images/handouts_130619_03-e.pdf

http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2013/images/handouts_130619_04-e.pdf

 

Fukushima Diary’s server cost, legal consultation cost, and other maintenance cost are supported by your donation.

_____

Français :

Les eaux souterraines de l’est (= côté mer) du réacteur 2 sont à 500 millions de Bq/m³ de Tritium et 1 million de Bq/m³ de Strontium 90

 

Le 19 juin 2013, Tepco publie qu’ils ont relevé 500 000 000 Bq/m³ de tritium (un demi-milliard) et 1 000 000 Bq/m³ de Sr 90 (un million) dans les eaux souterraines de l’est du bâtiment de la turbine du réacteur 2. L’échantillonnage date du 24 mai 2013.

Le niveau de radioactivité de l’eau de mer ne diminue pas. Pour réaliser ces mesures, Tepco a foré 3 trous d’observation à l’Est des bâtiments des turbines des réacteurs 1 à 4.
Le résultat en est la détection d’importants niveaux de radioactivité en tritium et strontium 90 dans l’eau. Tepco publie les relevés du Sr-90 suivant le 31 mai 2013 sous “analyse en cours”.

Date : 8 décembre 2012
Tritium : 29 000 000 Bq/m³
Sr-90 : 8 600 Bq/m³

Date : 24 mai 2013
Tritium : 500 000 000 Bq/m³
Sr-90 : 1 000 000 Bq/m³

Date : 31 mai 2013
Tritium : 460 000 000 Bq/m³
Sr-90 : Analyse en cours

Date : 6/7/2013
(Échantillon 1)
Tritium : 500 000 000 Bq/m³
Sr-90 : Analyse en cours

Date : 7 juin 2013
(Échantillon  2)
Tritium : 470 000 000 Bq/m³
Sr-90 : Analyse en cours

Tepco affirme que c’est à cause de la fuite d’eaux extrêmement radioactives dans la salle de contrôle des pompes du réacteur 2, survenue le 2 avril 2013.
Afin de suivre l’évolution de la diffusion de ces eaux extrêmement radioactives, Tepco a foré 4 trous d’observation supplémentaires.
Tepco prévoie de renforcer le sol et de remplir les les vides laissés dans la couche de graviers des fondations en injectant du béton chimique.

500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
2 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
3 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
4 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
5 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
6 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
7 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
8 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
9 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
10 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
11 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
12 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
13 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
14 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
15 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
16 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2
17 500,000,000 Bq/m3 of Tritium and 1,000,000 Bq/m3 of Sr-90 detected from groundwater east side of reactor2

http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2013/images/handouts_130619_03-e.pdf
http://www.tepco.co.jp/en/nu/fukushima-np/handouts/2013/images/handouts_130619_04-e.pdf

Les coûts du serveur du Fukushima Diary, ceux de dépôt légal et les autres dépenses de maintenance sont assumés par vos dons.

About Author