The detailed data of the endoscope operation [LINK] was published.
The dose meter indicated 10.3 Sv/h near the surface of flooded water, which is 10 times higher than the radiation level measured in the basement floor of reactor2 and 3.
However, when they put the dosemeter deeper than 2m in water, it indicated 100,000~1,000,000 Sv/h and it stopped decreasing though it was lifted up. Tepco states the dosemeter went out of order.
Transparency of water was only 60cm. The pipes are severely rusted because of sea water.
In this circumstance, the total dose of a nuclear worker reaches the 50mSv of the yearly limit within 20 seconds, start having acute radiation symptom within 6 minutes such as nausea and die in an hour.
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.