2024年3月28日 · 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.

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. It happened on the Susquehanna River in Londonderry Township, near Harrisburg, Pennsylvania.

The plant was the site of the most significant accident in United States commercial nuclear energy when, on March 28, 1979, TMI-2 suffered a partial meltdown. According to the U.S. Nuclear Regulatory Commission (NRC) report, the accident resulted in no deaths or injuries to plant workers or in nearby communities. [7] .

2009年12月18日 · Three Mile Island is the site of a nuclear power plant in south central Pennsylvania. In March 1979, a series of mechanical and human errors at the plant caused the worst commercial...

2022年5月4日 · Facts to know about the accident at Three Mile Island in 1979. The most serious accident in U.S. commercial nuclear power plant operating history occurred at the Three Mile …

2025年1月24日 · 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.

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.

2017年5月30日 · THREE MILE ISLAND, Pa. (AP) — In the darkness before dawn, in the chill mists that rise from the Susquehanna River, the atomic powerhouse on Three Mile Island defied its human keepers and threatened catastrophe. In the small neighboring towns like Yocumtown and York Haven, Goldsboro and Pleasant Grove, there was confusion, then fear.

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 …

2009年11月24日 · At 4 a.m. on March 28, 1979, one of the worst accidents in the history of the U.S. nuclear power industry begins when a pressure valve in the Unit-2 reactor at Three...