Radioactivity density of reactor1 sub-drain jumping up for 2 days, PCV temperature also increasing

According to Tepco, the radioactivity density of reactor1 sub-drain jumped up from 2/23/2013.

On 2/28, Cs-137 reading increased to be 6 times much as 2/23/2013.

Radioactivity density of reactor1 sub-drain jumped up for 2 days(Bq/cm3)
2/23
Cs-134 : 6.9E-02
Cs-137 : 1.5E-01

2/26
Cs-134 : 1.2E-01
Cs-137 : 2.7E-01

2/28
Cs-134 : 3.9E-01
Cs-137 : 8.4E-01

A thermometer of PCV in reactor1 has been indicating the increasing temperature since 2/26 as well.

2 Radioactivity density of reactor1 sub-drain jumping up for 2 days, PCV temperature also increasing

 

↓ The location of the thermometer.

3 Radioactivity density of reactor1 sub-drain jumping up for 2 days, PCV temperature also increasinghttp://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/subsurface_130223-e.pdf
http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/subsurface_130226-e.pdf
http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/subsurface_130228-e.pdf
http://www.tepco.co.jp/en/nu/fukushima-np/f1/pla/2013/images/data_1u_g-e.pdf
http://www.tepco.co.jp/en/nu/fukushima-np/f1/pla/2012/images/figure-e.pdf

 

 

_____

Français :

La radioactivité de la sous-canalisation du réacteur 1 grimpe depuis 2 jours, la température de la PCV grimpe aussi

 

Selon Tepco, La radioactivité de la sous-canalisation du réacteur 1 grimpe depuis le 23 février 2013.
Le 28 février 2013, les mesures du Cs 137 sont 6 fois plus importantes que celles du 23.

La radioactivité de la sous-canalisation du réacteur 1 grime depuis 2 jours, la température de la PCV grimpe aussi23 fev.
Cs-134 : 0,69 (Bq/cm³)
Cs-137 : 0,15

26 fev.
Cs-134 : 0,12
Cs-137 : 0,27

28 fev.
Cs-134 : 0,39
Cs-137 : 0,84

Un autre thermomètre de la PCV du réacteur 1 indique une augmentation de température depuis le 26 février :

2 La radioactivité de la sous-canalisation du réacteur 1 grime depuis 2 jours, la température de la PCV grimpe aussi

↓ La position du thermomètre.

3 La radioactivité de la sous-canalisation du réacteur 1 grime depuis 2 jours, la température de la PCV grimpe aussihttp://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/subsurface_130223-e.pdf
http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/subsurface_130226-e.pdf
http://www.tepco.co.jp/en/nu/fukushima-np/f1/smp/2013/images/subsurface_130228-e.pdf
http://www.tepco.co.jp/en/nu/fukushima-np/f1/pla/2013/images/data_1u_g-e.pdf
http://www.tepco.co.jp/en/nu/fukushima-np/f1/pla/2012/images/figure-e.pdf

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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