Elephant’s foot caught in reactor1 for the first time since 2011

(Photo : Molten substance accumulating on the bottom of reactor1 vessel. Photo was taken on the 9th of February, 2022.)

Molten substance was recorded in reactor1 by a drone camera for the first time after the nuclear accident in 2011.
Tepco has been operating the investigation inside reactor 1 since the 8th of February, 2022, which follows the previous investigation in reactor2 that took place five years ago. On the 10th of February, 2022, Tepco released the footage of a primary containment vessel (PCV) taken by a drone. Unidentified molten substance was seen accumulating in multiple locations on the bottom of PCV. PCV is filled with coolant water, however the drone detected the radiation level in the range of 1~2 Sv/h. Currently the composition of the substance has not been analyzed. Tepco comments it is assumably the mixture of molten reactor structure and the molten fuel dropped directly down from reactor pressure vessel (RPV). The volume and the distribution are not clear yet.



(Photo : Another molten substance (orange in the lower part of the image) captured accumulating on the wall of PCV. Photo was taken on the 8th of February, 2022.)



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.


February 2022