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On the 26th of April, 1986 there was a nuclear accident at the Chernobyl Nuclear Power Plant in Ukraine.

The exact time of the accident was recorded as 1:23:44am when a power surge caused a steam explosion which significantly damaged reactor number four. This initial damage caused a second explosion which had two potential causes:

1. The ignition of a mixture of hydrogen gas and air
2. A criticality incident or run away fission event

Current evidence suggests that the latter event occured which ultimately destroyed the roof of the reactor causing the release of radioactive material into the environment.

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Q: What disaster happened in chernobyl Ukraine?
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Related questions

Where is the Site of the world's worst nuclear disaster?

The world's worst known nuclear disaster was at Chernobyl, in the Ukraine. The Chernobyl Disaster, as it is called, happened on April 26, 1986. There is a link to a Wikipedia article on this below.


Which region were most damaged by the chernobyl disaster?

Ukraine and Belarus


What country is chernobyl is in?

Ukraine. At the time of the disaster, it was in the Soviet Union.


What is the population of Ukraine chernobyl?

Because of the disaster at the nuclear power plant in Chernobyl, not many people live there. Chernobyl, Ukraine has a population of 500.


What famous disaster happened at Chernobyl in Russia?

There was no famous disaster (or anything else) at Chernobyl in Russia as there is no such place. However for the disaster that occurred in Chernobyl in the Ukraine, please see the related question.


Where was the Chernobyl disaster at?

It was in the Ukraine, however it affected many countries across Europe and the world


Where was the nuclear disaster located in?

You probably mean at Chernobyl in the Ukraine, in 1986


What environmental disaster occurred in Ukraine in 1986?

the nuclear meltdown at Chernobyl.


Where is the abandoned town of Chernobyl site of a 1986 nuclear disaster located?

The Ukraine


Where did the nuclear disaster happen in April?

Chernobyl, Ukraine, in 1986, is probably what you are thinking of.


Was Chernobyl a chemical disaster?

No.It was a nuclear disaster that happened in 1986


When did chernobyl disaster happened?

On April 26, 1986