Tritium 450,000 Bq/m3 → 900,000 Bq/m3 in bypass well / Leaking tank effect

Having 300m3 of highly contaminated water leak, Tepco is investigating the effect of groundwater.

Tepco plans to pump up the groundwater to discharge before it reaches the reactor buildings, but the pumping wells are located downstream of the 300m3 leakage tank.

On 8/30/2013, Tepco measured 900,000 Bq/m3 of Tritium from the pumped water. It was less than 450,000 Bq/m3 from 12. 2012 to 3. 2013. This measurement strongly suggests the leaked water has already reached the pumping wells.

 

Tepco was planning to discharge the pumped water to the sea, which is called “Groundwater bypass”, without filtration.

Either way, Tritium can’t be filtered.

This measurement would significantly affect their groundwater bypass plan.

However, based on their own estimate, even if they pump up the groundwater, the same volume of groundwater is gathered from the surrounding areas. It can’t be the solution anyway.

As a conclusion, Tepco will have to keep building the tanks but because the contaminated water to stock increase faster than they build the tanks, Tepco will run out of the capacity in November ~ December.

 

↓ The issued pumping well is in the blue circle. The leaking tank is in the yellow circle.

Tritium density in groundwater bypass well downstream of leaking tank picked up as double as past highest reading

 

2 Tritium density in groundwater bypass well downstream of leaking tank picked up as double as past highest reading

 

http://www.tepco.co.jp/nu/fukushima-np/f1/smp/2013/images/h4-impact_130831-j.pdf

http://www.tepco.co.jp/nu/fukushima-np/handouts/2013/images/handouts_130823_03-j.pdf

http://www.tepco.co.jp/cc/press/2013/1230170_5117.html

 

 

You can ignore the truth but the truth won’t ignore you.

_____

Français :

Tritium : 450 000 Bq/m³ → 900 000 Bq/m³ dans le puits de dérivation / effet de la fuite de la citerne

 

Tepco recherche les effets souterrains de la fuite des 300 m³ d’eaux extrêmement radioactives.

Tepco prévoit de pomper les eaux souterraines avant qu’elles n’atteignent les bâtiments des réacteurs pour pouvoir les déverser en mer ensuite mais les puits de forage sont situés en aval de la fuite des 300 m³.
Le 30 août 2013, Tepco relevait 900 000 Bq/m³ de tritium dans les eaux pompées. Il y en avait moins de 450 000 Bq/m³ entre décembre 2012 et mars 2013. Ce relevé suggère fortement que les eaux de la fuite ont déjà atteint les puits de pompage.

Tepco prévoyait de les déverser en mer, ce qu’ils appelaient “la dérivation”, sans filtrage.
De toute façon, on ne sait pas filtrer le tritium.
Ce relevé va gravement compromettre leur plan de dérivation des eaux souterraines.
Cependant et sur la base de leurs propres estimations, même s’ils pompent les eaux souterraines, le même volume en est attiré des eaux environnantes. Dans tous les cas ça ne peut pas être une solution.
En conclusion, Tepco va devoir continuer à monter des citernes mais comme le volume des eaux extrêmement radioactives à garder augmente plus rapidement que leurs constructions, Tepco va tomber à court de citernes dès novembre ~ décembre.

↓ Le puits de dérivation est dans le cercle bleu, la citerne des 300 m³ dans le jaune
et la pente du terrain va du bas vers le haut de cette photo aérienne.

Tritium density in groundwater bypass well downstream of leaking tank picked up as double as past highest reading

2 Tritium density in groundwater bypass well downstream of leaking tank picked up as double as past highest reading

http://www.tepco.co.jp/nu/fukushima-np/f1/smp/2013/images/h4-impact_130831-j.pdf
http://www.tepco.co.jp/nu/fukushima-np/handouts/2013/images/handouts_130823_03-j.pdf
http://www.tepco.co.jp/cc/press/2013/1230170_5117.html

Vous pouvez ignorer la vérité mais la vérité ne vous ignorera pas.

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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