Tepco considers evaporating 800,000 m3 of Tritium water to the air

On 12/11/2015, Tepco announced the possibility of evaporating Tritium water retained in Fukushima plant area. It was reported in the task force of METI (Minister of Economy, Trade and Industry).

From their report, the estimated volume to be released is 800,000 m3. 400 m3 of Tritium water is expected to be released per day.

The maximum density of Tritium is 4,200,000,000 Bq/m3.

The water is reportedly vaporized at 900 ~ 1,000 ℃, released to the atmosphere at 60m above the ground.

Tepco states the maximum density becomes lower than 5,000 Bq/m3 at 40m area from the releasing point, which is the notice concentration limit.






Français :

Tepco envisage de larguer 800 000 m³ d’eau tritiée dans l’air


Le 11 décembre 2015, Tepco a annoncé une possibilité d’évaporer l’eau tritiée entreposée dans la centrale de Fukushima. Ils ont présenté l’idée au cours d’un groupe de travail du METI (Ministère de l’Économie, du Commerce et de l’Industrie).

Selon leur rapport, le volume à larguer estimé est de 800 000 m³. Ils espèrent ainsi évaporer 400 m³ d’eau au tritium par jour.
Le record de radioactivité au Tritium est de 4 200 000 000 Bq/m³ (4,2 milliards).
L’eau serait évaporée entre 900 et 1 000 ℃, puis larguée dans l’atmosphère à 60 m au-dessus du sol.
Tepco affirme que la radioactivité descend en dessous de 5 000 Bq/m³ à partir de 40 m du point de largage, ce qui est la limite de radioactivité de la notice.


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.


December 2015