Was it human error or not? ☢️
overheated and exploded during a safety test, releasing at least 5% of the radioactive reactor core into the environment and depositing radioactive material across a wide swathe of Europe.Another 28 to 30 operators and firemen who helped fight the blaze died of acute radiation syndrome within a few weeks of the accident, and a number of workers later died of causes related to suspected radiation exposure.
As steam increases in the fuel channels, the neutrons that would have been absorbed by the denser water produce increased fission in the fuel. In the accident at Chernobyl 4, conditions resulted in a positive void coefficient that was large enough to overwhelm all other influences on the power coefficient.
As the reactor began overheating, a peculiarity of the design of the control rods caused a dramatic power surge as they were inserted into the reactor, leading to the rapid increase in core reactivity.It took almost two weeks after the explosion for firefighters to put out the graphite-fueled fire.
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