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Q: How many years passed from the first controlled nuclear reaction to the first nuclear meltdown in U.S. history?
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During an earthquake the cooling system of a nuclear reaction can be compromised increasing the threat of what?

a meltdown


During an earthquake the cooling system of a nuclear reaction can be compromise increasing the threat of what?

a meltdown


Is the nuclear reaction in a nuclear power plant controlled or uncontrolled?

Controlled! ...if the reactor is working properly.


Can the chain reaction of nuclear fission be stopped or controlled?

The chain reaction can be controlled, and it can be stopped. It is controlled in a nuclear power plant, and it is stopped when the plant shuts down, as it does periodically for refueling.


Why are people afraid of a nuclear meltdown in Japan?

coz if nuclear meltdown it can explode


What is controlled nuclear reactions?

A controlled nuclear reaction is one in which the average number of reactions per second does not increase.


What year did the first nuclear meltdown occur?

There was a naturally occurring nuclear reaction in a uranium ore deposit in Oklo, Gabon some 2 billion years ago. The reaction generated heat for more than a hundred thousand years with a potential of a meltdown. In recent history the Santa Susana Field Lab had reactor meltdown in 1959 EBR-I in Idaho had a meltdown on November 29, 1955. There were probably other meltdowns at the Idaho Reactor Test Site earlier in other test reactors (probably a good idea for a FOIA request).


What is the meaning of nuclear reactor?

It is a device where a controlled nuclear fission chain reaction occurs.


What is meant by nuclear reactor?

It is a device where a controlled nuclear fission chain reaction occurs.


When was the first controlled nuclear explosion in the US?

Nuclear explosions are not controlled. Nuclear reactors are controlled.The first controlled nuclear reaction in the US was on December 2, 1942.The first nuclear explosion in the US was on July 16, 1945.


How did the Manhattan project change the world?

It created the first controlled nuclear reaction, as well as nuclear weapons.


What undergoes a meltdown when there is too much current flow?

A meltdown can occur in a nuclear reactor when there is too much current flow, causing the fuel rods to overheat. This can lead to a loss of control over the nuclear reaction and the release of radioactive material.