[Contaminated water coming down to the sea?]Chloride concentration increased 270% of 2 weeks ago in observation holes
About the major leakage of highly contaminated water, the chloride concentration is observed to be increasing in the observation holes.
Tepco is conducting the radiation test of ground water in the downstream of the leaking reservoirs. (Between the reservoirs and the sea.)
The leaking water contains high level of β nuclide and chloride. If they detect it on the downstream of the reservoirs, it means the contaminated water is penetrating underground.
They tested on 4/10 and 4/22/2013. Though total β nuclide is lower than the detectable level, the chloride concentration significantly increased in 3 of 7 holes.
(4/10 → 4/22)
Well (hole) 1 : 40 → 46 ppm
Well 2 : 16 → 43 ppm
Well 3 : 65 → 99 ppm
On 4/15/2013, Fukushima Diary reported the chloride concentration was high in those observations holes, but now it’s becoming higher.
(cf, [Underground contamination?] High level of chloride concentration detected between the leaking reservoirs and sea [URL 1])
Actually these holes were made as “Underground bypass pumping well”. It was to pump up the groundwater before flowing into the plant. The pumped water is to be discharged to the sea without purification. Detecting radiation from these wells would collapse their water reducing plan.
(cf, The leaking highly contaminated water may collapse Tepco’s countermeasure for ground water [URL 2])
Concernant les fuites d’eaux extrêmement radioactives, la concentration en chlorures observée augmente dans les trous d’observation.
Tepco procède au contrôle de la radioactivité de l’eau souterraine en aval des réservoirs qui fuient. (entre les réservoirs et la mer.)
L’eau qui fuit contient de hauts niveaux de β nucléide et de chlorures. S’ils en détectent en aval des réservoirs, ça signifie que l’eau extrêmement radioactive pénètre dans le sous-sol.
Ils ont contrôlé les 10 et 22 avril 2013. Bien que le total en β nucléides soit inférieur au niveau détectable, la concentration en chlorures a significativement augmenté dans 3 des 7 trous.
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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.