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Nuclear Catastrophe  Chernobyl and Fukushima Daiichi Nuclear Disaster
Chernobyl Nuclear Disaster ,[object Object]
An explosion and fire released large quantities of radioactive contamination into the atmosphere, which spread over much of Western USSR and Europe.,[object Object]
The reactor had a dangerously large positive void coefficient. The void coefficient is a measurement of how a reactor responds to increased steam formation in the water coolant.
A more significant flaw was in the design of the control rods that are inserted into the reactor to slow down the reaction.
Other deficiencies besides these were noted in reactor design, as were its non-compliance with accepted standards and with the requirements of nuclear reactor safety
Lacking  a containment vessel.,[object Object]
203 people were hospitalized immediately. 31 of them eventually died. Most of these people were workers in the plant or local firefighters.
Evacuation of people from the affected zones.

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Nuclear catastrophe