Drone u-turned after unknown troubles during reactor1 investigation

(Photo: Reactor1, December 2019. [URL])


The investigation inside reactor1 was planned to start on the 12th of January, 2022 until August, however, it encountered multiple troubles in the process of preparation and the restarting schedule is unforeseeable.

Tepco was attempting to install four rings inside the primary containment vessel (PCV) of reactor1 by utilizing a drone. The rings are 30 cm in diameter. They were expected to ensure the route for the next drone to pass, which is specialized to analyze the nuclear debris assumed to remain in PCV.

However, at the moment when engineers turned on all the devices, technical errors occurred in radiation level inspector and the clock of the drone’s camera.
The causes have not been identified. The radiation level near the drone’s entry point is still lethally high. Each worker cannot remain on the site for over 30 minutes, so eight engineers take turns to work.








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.


January 2022