A nuclear fission reaction that was not correctly controlled.
Three Mile Island related to an incident which occurred in Dauphin County, Pennsylvania on March 28th, 1979. On this Wednesday morning, around the time of 4am, there was a partial nuclear meltdown which released radioactive gases and radioactive iodine into the environment.
The Three Mile Island accident was a nuclear meltdown which occurred at the Three Mile Island power plant in Dauphin County, Pennsylvania, United States on March 28, 1979.
The area around Three Mile Island (TMI) was only evacuated once during the accident that began on 28 March 1979.
The accident at Three Mile Island was a partial meltdown of the reactor core in the number 2 reactor at the facility. It didn't happen all at once, but events that led to the failure of the core began at about 4:00 AM on Wednesday, March 28, 1979. The reactor was operating at about 97% of capacity when problems arose in the secondary systems, the non-nuclear part of the plant. These culminated in a lack of water to cool the core, which subsequently overheated. (Use the links below to learn more.)
It is estimated that the amount of radioactive gases released from the Three Mile Island Unit II incident in 1979 was less than 481 PBq (13 million curies) and that the amount of Iodine-131 released was less than 740 GBq (20 curies).
March 28, 1979
Three Mile Island related to an incident which occurred in Dauphin County, Pennsylvania on March 28th, 1979. On this Wednesday morning, around the time of 4am, there was a partial nuclear meltdown which released radioactive gases and radioactive iodine into the environment.
The Three Mile Island accident was a partial nuclear meltdown which occurred at the Three Mile Island power plant in Dauphin County, Pennsylvania, United States on March 28, 1979.
The Three Mile Island accident was a nuclear meltdown which occurred at the Three Mile Island power plant in Dauphin County, Pennsylvania, United States on March 28, 1979.
Three Mile Island The accident at the Three Mile Island Unit 2 (TMI-2) nuclear power plant near Middletown, Pennsylvania occurred on March 28, 1979.
The area around Three Mile Island (TMI) was only evacuated once during the accident that began on 28 March 1979.
The accident began about 4:00 a.m. on March 28, 1979.
Three mile Island near Harrisburg,PA March 28, 1979
The Three Mile Island accident was a partial nuclear meltdown which occurred at the Three Mile Island power plant in Dauphin County, Pennsylvania, United States on March 28, 1979.
March 5, 1979 Voyager I's closest approach yields the first close-up picture of Jupiter
Three Mile Island.
The Three Mile Island accident in 1979