As previously reported, the nuclear melt down at the the three wrecked Fukishima nuclear reactors seems to be getting even worse.
The robot designed to enter and inspect the melt down in the bottom of the reactor vessel didn't last very long. (Guardian March 9, 2017). We also note that the serious media now report a "triple melt-down", not just the one with the robot "Scorpion". This machine lasted only two hours, not the planned ten hours. Now the "clean-up" is expected to take 30 to 40 years, and cost about £150 billion.
The robot seemed to have been designed to withstand extreme radiation, and amazing heat. Radiation was estimated to be about 250 sieverts an hour (human safety is measured in milli-siverts....). But it seems this was an underestimate, and radiation of 650 siverts was recorded. "Enough to kill a human being in a minute" was the view.
It has also emerged that Units 1 and 3 are perhaps in an even worse condition than Unit 2, so robot "Scorion" in Unit 2 was a good bet. The problem (!) is removing " hundreds of tons of molten nuclear fuel". Poor robot. What an appalling mess......
Meanwhile, (Guardian 1March 10) residents who fled the Fukushima area are being told to return to their homes. These aren't in the official danger zones, but who wouldn't be worried stiff ?
NOTE: these zones are pretty wide compared to any specified in the UK.