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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 reactor accident began at 4:00 a.m. on March 28, 1979, and released radioactive gases and radioactive iodine into the ...
Three Mile Island in 2019, prior to shutdown. Three Mile Island Nuclear Generating Station (commonly abbreviated as TMI) is a shutdown nuclear power plant on Three Mile Island [a] in Pennsylvania on the Susquehanna River just south of Harrisburg. It has two separate units, TMI-1 (owned by Constellation Energy) and TMI-2 (owned by EnergySolutions).
The effects included "metallic taste, erythema, nausea, vomiting, diarrhea, hair loss, deaths of pets, farm and wild animals, and damage to plants." [ 16 ] Some local statistics showed dramatic one-year changes among the most vulnerable: "in Dauphin County, where the Three Mile Island plant is located, the 1979 death rate among infants under ...
According to a 2010 survey of energy accidents, there have been at least 56 accidents at nuclear reactors in the United States (defined as incidents that either resulted in the loss of human life or more than US$50,000 of property damage). The most serious of these was the Three Mile Island accident in 1979.
Three Mile Island accident near Harrisburg, Pennsylvania (United States), 28 March 1979. [18] A combination of design and operator errors caused a gradual loss of coolant, leading to a partial meltdown. The amounts of radioactive gases released into the atmosphere are still unknown, so injuries and illnesses that have been attributed to this ...
The Unit 1 reactor on Three Mile Island, which closed in 2019, is adjacent to the Unit 2 reactor that experienced a major nuclear power accident in 1979
Serious nuclear power plant accidents include the Fukushima nuclear disaster (2011), the Chernobyl disaster (1986), the Three Mile Island accident (1979), and the SL-1 accident (1961). [ 11 ] Nuclear power accidents can involve loss of life and large monetary costs for remediation work.
During the Three Mile Island accident, a slow partial meltdown of the reactor core occurred. About 41,900 pounds (19,000 kg) of material melted and relocated in about 2 minutes, approximately 224 minutes after the reactor scram .