Three Mile Island accident - Wikipedia The Three Mile Island accident was a partial nuclear meltdown of the Unit 2 reactor (TMI-2) of the Three Mile Island Nuclear Generating Station, located on the Susquehanna River in Londonderry Township, Dauphin County near Harrisburg, Pennsylvania
Backgrounder on the Three Mile Island Accident - NRC The Three Mile Island Unit 2 reactor, near Middletown, Pa , partially melted down on March 28, 1979 This was the most serious accident in U S commercial nuclear power plant operating history, although its small radioactive releases had no detectable health effects on plant workers or the public
Three Mile Island accident | 1979, Pennsylvania, US | Britannica The accident at Three Mile Island, though minuscule in its health consequences, had widespread and profound effects on the American nuclear power industry It resulted in the immediate (though temporary) closing of seven operating reactors like those at Three Mile Island
March 28, 1979: America Nearly Experiences A Meltdown On March 28, 1979, the United States experienced a near-miss that could have changed the nation forever when a coolant leak at the nuclear power plant on Three Mile Island nearly led to a full meltdown Situated near Harrisburg, Pennsylvania, Three Mile Island was meant to showcase the potential of clean, safe energy However, that day’s events shattered those hopes, leaving behind fear and
Three Mile Island: A Timeline of the Worst Nuclear Accident in US . . . In late March 1979, the Three Mile Island nuclear generating station in Pennsylvania witnessed the worst nuclear incident in American history In Unit 2 of the plant, a valve surrounding a reactor core failed to close, leaking thousands of litres of contaminated coolant into the surrounding building and allowing the core’s temperature to rise
Today in History: March 28, Three Mile Island nuclear plant accident Today in History: March 28, Three Mile Island nuclear plant accident A Pennsylvania state policeman and plant security guards stand outside the closed front gate to the Metropolitan Edison nuclear power plant on Three Mile Island near Harrisburg, Pa , after the plant was shut down following an accident