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Chernobyl Nuclear Power Plant Before the Disaster
Reactor Four at the Chernobyl nuclear power plant began to fail in the early hours of 26 April, 1986.
Seven seconds after the operators activated the 20-second shut down system, there was a power surge. The chemical explosions that followed were so powerful that they blew the 1,000 ton cover off the top of the reactor.
NOTE: the above text was used without permission from http://news.bbc.co.uk
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Chernobyl Nuclear Power Plant During the Disaster
Design flaws in the power plant's cooling system probably caused the uncontrollable power surge that led to Chernobyl's destruction.
Serious mistakes had also been made by the plant operators, who had disengaged several safety and cooling systems and taken other unauthorised actions during tests of electrical equipment.
With procedures intended to ensure safe operation of the plant operating less than effectively, the Chernobyl unit was even more vulnerable to unforeseen power discharges.
The Chernobyl plant did not have an effective containment structure, and without that protection, radioactive material escaped into the wider environment.
NOTE: the above text was used without permission from http://news.bbc.co.uk
NOTE: the photo at the left was used without permission from http://power.about.com
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Chernobyl Nuclear Power Plant After the Disaster
The photo to the right shows the sarcophagus over the Chernobyl #4 reactor.
The crippled reactor is still encased in a hurriedly constructed concrete sarcophagus, which is growing weaker over time.
NOTE: the above text was used without permission from http://news.bbc.co.uk
NOTE: The picture at the right was used without permission from http://power.about.com
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