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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 on the Susquehanna River in Londonderry Township, near Harrisburg, Pennsylvania.
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.
In March 1979, a series of mechanical and human errors at the plant caused the worst commercial nuclear accident in U.S. history, resulting in a partial meltdown that released dangerous...
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.
The most serious accident in U.S. commercial nuclear power plant operating history occurred at the Three Mile Island nuclear station in Pennsylvania. A combination of equipment failure and operator error led to the partial meltdown of the power plant’s Unit 2 reactor that resulted in the release of a small amount of radioactive material.
The worst accident in the history of the U.S. nuclear power industry begins when a pressure valve in the Unit‑2 reactor at Three Mile Island fails to close.
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.
Although it caused no deaths or injuries, the accident at the Three Mile Island, Unit 2 (TMI-2) nuclear power plant was the most serious incident in U.S. commercial nuclear power history.
In the predawn hours of March 28, 1979, a pressure valve suddenly malfunctioned at the Three Mile Island nuclear power plant near Harrisburg, Pennsylvania. What occured next--a combination...
America’s worst accident at a civilian nuclear power plant occurred on March 28, 1979. Unbeknown to anyone, half the fuel melted in one of two nuclear reactors on Three Mile Island near Harrisburg, Pa. Large quantities of radioactivity leaked from the reactor, but most of it was contained.