.Timeline
Sept 1, 2013
1000 Sieverts per hour is enough to kill you. The outdoor holding tanks are now emitting as much radiation as you would expect to find in the most dangerous part of the ruined reactors.
TOKYO — Radiation near a tank holding highly contaminated water at Japan's crippled Fukushima nuclear plant has spiked 18-fold, the plant's operator said on Sunday, highlighting the struggle to bring the crisis under control after more than two years. Radiation of 1,800 millisieverts per hour - enough to kill an exposed person in four hours - was detected near the bottom of one storage tank on Saturday, Tokyo Electric Power Co, also known as Tepco, said.
An August 22 readings measured radiation of 100 millisieverts per hour at the same tank. Japanese law has set an annual radiation exposure safety threshold of 50 millisieverts for nuclear plant workers during normal hours. Last month, Tepco revealed that water from the tank was leaking. Japan's nuclear regulator later raised the severity of the leak from a level 1 "anomaly" to a level 3 "serious incident"
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