[Robot decontamination] 0.2 Sv/h on the first floor of reactor3
Tepco is trying to develop the remote decontamination technology by using robot.
They conducted the radiation survey at reactor1 in May [Link].
On 7/5/2012, Tepco announced the radiation survey result of reactor2 and reactor3. (Only the first floor)
It was done from 5/28 to 5/31 in reactor2, from 6/11 to 6/15 in reactor3, but the results have not been published by the day.
The highest reading was 203.1 mSv/h in reactor3, 40.8 mSv/h in reactor2.
Also, they took samples to detect contamination state of those reactors, but the results are not published yet.
Samples of dust, peeling paint and drilling core (of floor) will be analyzed at JAEA Oarai Research and
Development Center. (Unit 1 sample has been sent on June 22,
Unit 2-3 samples will be sent on July 18.)
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.