Milestones: April 26, 2024
A DISASTROUS EXPERIMENT — THE CHERNOBYL NUCLEAR REACTOR DISASTER on April 26, 1986, was caused by an engineer’s experiment that went horribly wrong. A group of engineers at the Chernobyl atomic power station at Pripyat in Ukraine began an electrical engineering experiment on the Number 4 reactor, even though they had scant knowledge of reactor physics. They wanted to see if the reactor’s turbine could run emergency water pumps on inertial power. The result was an explosion and a fire that burned for days, spewing radioactive material into the atmosphere. More than 100,000 persons were evacuated from a 300-square-mile area around the plant. Within three months later 32 people were reported to have died, with thousands more exposed to dangerous levels of radiation. The plant was encased in a concrete tomb in an effort to prevent the still-hot reactor from overheating again and to minimize further release of radiation.
However, Soviet authorities were not quick to admit the accident, and it took Swedish officials to report the fallout before the Soviets reluctantly acknowledged what had happened.
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