• One of the dangerous thoughts about nuclear power is when an accident occurs, radiation is released into the environment and people get affected.
• Two of the most nuclear tragic accidents occurred at the Three Mile Island reactor 2 in the United States of America (1979) and the Chernobyl reactor 4 in the former Soviet Union (1986).
• Scariest accident ever in the history of Nuclear power
• Released over multiple times the radiation delivered by the nuclear bombs of Hiroshima and Nagasaki.
• Around 340,000 people affected, evacuated, and resettled elsewhere
Power plant: –
• 4 reactors of type are RBMK-1.
• Reactor capacity is 1Gigawatt where total plant capacity is 4 GW.
• At the time of tragedy, the plant was able to provide 10% of Ukraine’s electricity.
• 2 additional reactors were under construction.
What happened at Chernobyl?
Serious of events in that Reactor 4 caused in:
• Catastrophic where Steam went as Explosion
• Nuclear plant meltdown.
• Pressurized Graphite fired
Series of the event – April 25th, 1986
• At 11 pm, Control rods were lowered to reduce reactor output as planned to do turbine test. BUT too quickly it went almost complete shutdown.
• At 1 am, control rods raised to reach a proper amount of output for the test around (12%).
• At 1:23 am, Reactor overheated extremally and water coolant turned to steam.
• 6 control rods left; however, the minimum safe number was 30 control rods.
• The emergency shut down button was pressed instantly.
• Control rods were tried to re-inserted But, the fault caused power surge at a certain level in the reactor; the Output was 100 times normal.
• Due to extreme pressure and temperature fuel pellets exploded; the roof was blown off; air trapped in and causing a fire.
• To open sluice gates to vent reactor water, liquidators were sent.
• Radioactive debris collected.
• Covered with bags of sand, lead and boric acid after the explosion.
• For preventing, concrete sarcophagus structured to seal off the reactor and its contents.
• A radioactive cloud floated in an easterly direction.
• Radiation traveled as far as Sweden, it’s around 1100km.
• Initial Soviet Union reports conclude 60% contamination in Belarus.
• River Pripyat and Dnieper river and other reservoirs contaminated.
• Pine forest, area within 4km radius turned like, ginger Brown and died as Red Forest.
• “exclusion zone” became a wildlife haven.
• 336,000 people evacuated and resettled.
• 237 suffered from acute radiation sickness.
• 31 deaths within 3 months.
• The cancer death ratio expected probably high as a direct result of radiation exposure.
• Thyroid cancer cases were found among children.
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