But what no one knew, thanks to years of error and cover up, was that there was a fatal flaw in the reactor design that made it unstable at low power levels. Those who died quickly were lucky. Emergency shutdown procedures were started, but when the control rods were reinserted, their graphite tips caused the power levels to rise so dramatically that a portion of the reactor was destroyed. It was a beautiful evening, particularly warm and clear, and Yuvchenko, an engineer-mechanic, and his workmates were full of their plans for the upcoming May Day holidays. He stayed outside, propping the heavy reactor hall door open with his shoulder. The average radiation dose from natural and medical radiation is 2. The three men who went in all died within two weeks.
Eleanor. Age: 28.
The plant workers and firefighters at Chernobyl received times their permitted yearly dose and more than 5, times the average annual dose.
Ayleen. Age: 26.
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There is seemingly trivial reddening of the skin at first, but, again after a period of calm, the skin develops weeping ulcerations over layers of dead tissue. Steam wrapped around everything; it was dark and there was a horrible hissing noise. Chromosomal damage over 4Sv is severe. Nobody knows quite how radiation produces its early effects of nausea and diarrhoea. Emergency shutdown procedures were started, but when the control rods were reinserted, their graphite tips caused the power levels to rise so dramatically that a portion of the reactor was destroyed. Four sieverts is lethal for half of those affected. For those with severe exposures, rubber-like mucus caused breathing problems, and herpes-like rashes formed massive crusts on lips and facial skin.