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 on the Susquehanna River in Londonderry Township, near Harrisburg, Pennsylvania.
Three Mile Island ‑ Accident, Nuclear & Meltdown - HISTORY
Dec 18, 2009 · Three Mile Island is the site of a nuclear power plant in Pennsylvania which experienced the worst commercial nuclear accident in U.S. history in 1979.
Three Mile Island accident | 1979, Pennsylvania, US | Britannica
Oct 25, 2024 · 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.
Nuclear disaster at Three Mile Island | March 28, 1979
Nov 24, 2009 · 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 Mile Island fails to close....
Backgrounder on the Three Mile Island Accident | NRC.gov
Mar 28, 2024 · 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.
Meltdown at Three Mile Island | American Experience | PBS
Feb 22, 1999 · 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...
What Happened at Three Mile Island, One of the US's Worst Nuclear …
May 19, 2023 · On March 28, 1979, almost a decade before the Chernobyl nuclear disaster, a nuclear reactor at Three Mile Island experienced a partial meltdown. The event is now considered one of the worst...
NMAH | Three Mile Island: The Inside Story - National Museum of ...
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 …
40 Years After Nation's Worst Nuclear Accident, A Push To Keep Three …
On March 28, 1979, Three Mile Island's Unit 2 reactor suffered a partial meltdown after a pump stopped sending water to the steam generators that removed heat from the reactor core. The accident...
Three Mile Island: Nuclear Nightmare - TIME
Apr 9, 1979 · There was a genuine danger of a “meltdown,” in which the core could drop into the water coolant at the bottom of its chamber, causing a steam explosion that could rupture the 4-ft.-thick concrete...