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A pressure relief valve got stuck open, but the operator console read that it was closed. This resulted in many operator errors and the eventual exposure and meltdown of the upper third or so of the core.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoA stuck open valve and a design error on the control panel showing the commanded position of the valve not the actual position. This kept the operators confused long enough for a severe LOCA to occur (through that valve) to allow partial meltdown of the core.
Wiki User
∙ 11y agoThree Mile Island IS the site of a Nuclear Reactor complex.
There was a serious accident relating in the release of Radio Active gasses and water.
There were no deaths and even though the radioactive material release was large no health effects have been measured.
The real reason this was so controversial that even the Government didn't know how bad an accident it was until a full investigation was ordered by the president.
There is a very good WIKI article about this.
Wiki User
∙ 14y agoBabcock and Wilcox. See link below
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Why is three mile island nuclear plant called three mile island?
Because the power plants were built on an island named Three Mile Island.
What happened at three mile island in march of 1979?
A nuclear fission reaction that was not correctly controlled.
We've all heard of the nuclear accident at Three Mile Island but what state is Three Mile Island in?
Pennsylvania
Who was president during Three Mile Island?
The president at the time of the Three Mile Island nuclear incident was Jimmy Carter.
Where and when did the nuclear meltdown at three mile island happen?
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.
Why is three mile island nuclear plant called three mile island?
Because the power plants were built on an island named Three Mile Island.
What happened at three mile island in march of 1979?
A nuclear fission reaction that was not correctly controlled.
Talk about publicity What disaster happened 12 days after the release of the movie The China Syndrome?
Three-Mile Island
We've all heard of the nuclear accident at Three Mile Island but what state is Three Mile Island in?
Pennsylvania
What media is used in Yvonne Jacquette's Three Mile Island?
Why did Yvonne jacquette draw the three mile island
What radioactive material was released at Three Mile Island?
Krypton-85 (85Kr36) was released at Three Mile Island.
Who was president during Three Mile Island?
The president at the time of the Three Mile Island nuclear incident was Jimmy Carter.
Where and when did the nuclear meltdown at three mile island happen?
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.
How big is three mile island nuclear facility?
the facility a three mile island takes up most of the island, so it is about 2 or 3 miles square
What happened in Three Mile Island in the 1970s?
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.
Did three mile island blowup?
Yes.
In what ways did the incident at Three Mile Island differ from that at Chernobyl?
The Three Mile Island incident in 1979 was a partial meltdown resulting from equipment malfunctions and operator errors, with no immediate fatalities and limited off-site impact. In contrast, the Chernobyl disaster in 1986 was a full-scale meltdown caused by a flawed reactor design and operator errors, resulting in immediate deaths, widespread radioactive contamination, and long-term health and environmental consequences.
