Tepco to inject cement instead of frozen water wall
Related to this article.. Underground temperature never go down regardless of frozen wall beside common fuel pool [URL]
On 6/2/2016, Tepco reported to NRA (Nuclear Regulation Authority) that they need to inject cement to “frozen” water wall and NRA admitted it.
The feasibility of frozen water wall project was questioned since before the beginning. In the meeting of NRA, Tepco admitted the temperature remains nearly 10 ℃ at 4 “freezing” points to cause no improvement to stop contaminated groundwater. It has been in freezing operation for over 2 months.
These 4 points are situated between the reactor buildings and the sea. The volume of contaminated water to be pumped up has not been decreased regardless of the frozen water wall.
Tepco states the temperature remains over 0 ℃ because of the high speed of groundwater. They inject cement to slower the water.
Le 2 juin 2016, Tepco a rapporté à la NRA (Nuclear Regulation Authority) qu’ils devaient injecter du ciment dans le mur “congelé” et la NRA l’a validé.
La faisabilité du projet de mur congelé était douteuse depuis bien avant sa réalisation. Au cours de la réunion de la NRA, Tepco a avoué que la température reste autour des 10°C en 4 endroits “de congélation” ce qui empêche toute amélioration permettant de stopper les eaux souterraines radioactives. L’opération de congélation est lancée et continue depuis plus de deux mois.
Ces 4 points sont situés entre les bâtiments des réacteurs et la mer. Le volume d’eau extrêmement radioactive devant être pompée n’a pas diminué malgré le mur congelé.
Tepco affirme que la température reste au-dessus de 0°C à cause de la vitesse élevée du flux des eaux souterraines. Ils injectent du ciment pour ralentir ces eaux.
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.