All About History: The World’s Worst Disasters


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The Worst Natural Disasters: The Haitian Earthquake, Haiti, 2010

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The Worst Natural Disasters in Indian History - vesmocuahsioment.gq

This lack of awareness led the operators to engage in actions that diverged from safety procedures. Consequently, a sudden power surge resulted in explosions and nearly complete destruction of the reactor. The fires that broke out in the building contributed to the extensive radioactive releases. The partial meltdown at Three Mile Island Unit 2 is considered the most serious nuclear accident in U.

The accident began with failures in the non-nuclear secondary system, followed by a human-operated relief valve in the primary system that stuck open, which allowed large amounts of nuclear reactor coolant to escape. In particular, a hidden indicator light led to an operator manually overriding the automatic emergency cooling system because he mistakenly believed that too much coolant water in the reactor had caused the steam pressure release. Eventually the reactor was brought under control, although the full extent of the accident was not understood until later. Coolant flow blockage in two fuel channels led to the partial meltdown of two fuel assemblies at Fermi Unit 1.

World's Worst Man-Made Engineering Disasters - Top Collection 5 - Engineering Disasters Documentary

Workers did not notice what had occurred until core temperature alarms sounded. Several fuel rod subassemblies reached temperatures of up to degrees Fahrenheit, causing them to melt.

After the reactor was shut down for repairs, it was returned to partial operation periodically until , but it was never again fully operational. It was officially decommissioned in The withdrawal of a single control rod caused a catastrophic power surge and steam explosion at the SL-1 boiling water reactor that killed all the workers on duty at the time. On January 3, , workers were in the process of reattaching to their drive mechanisms control rods they had disconnected earlier that day to enable test equipment to be inserted in the reactor core.

They lifted the central control rod 20 inches, instead of the four inches that was required. This error caused the reactor to go critical and its power to surge 6, times higher than its normal level in less than a second.

enter site As a result, nuclear fuel vaporized and a steam bubble was created. A natural hazard is a naturally-occurring event that poses a threat to human life or property. A natural hazard becomes a natural disaster when it actually takes place, causing significant loss of life and property. The potential impact of a natural disaster depends on the size and location of the event.

Deadly disasters

If the disaster takes place in a heavily populated area, it immediately causes more damage to both life and property. There have been numerous natural disasters in recent history, ranging from the January earthquake that struck Haiti , to Cyclone Aila, which hit Bangladesh and India in May of , killing approximately people and affecting upwards of 1 million. There is debate as to what the deadliest disasters of all time actually are, due to discrepancies in death tolls, especially with disasters that occurred outside of the last century. Following is a list of ten of the deadliest disasters in recorded history, from lowest to highest estimated death toll.

1. Shaanxi Earthquake 1556

Tangshan Earthquake China - , dead.

All About History: The World’s Worst Disasters All About History: The World’s Worst Disasters
All About History: The World’s Worst Disasters All About History: The World’s Worst Disasters
All About History: The World’s Worst Disasters All About History: The World’s Worst Disasters
All About History: The World’s Worst Disasters All About History: The World’s Worst Disasters
All About History: The World’s Worst Disasters All About History: The World’s Worst Disasters
All About History: The World’s Worst Disasters All About History: The World’s Worst Disasters
All About History: The World’s Worst Disasters All About History: The World’s Worst Disasters
All About History: The World’s Worst Disasters All About History: The World’s Worst Disasters

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