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What Happened at the Fukushima Daiichi Nuclear Power Plant?

This animation and explanation will help you understand the sequence of events.

March 11 was the anniversary of the earthquake, tsunami and the nuclear reactor(s) meltdown. This YouTube video, Understanding the accident of Fukushima Daiichi, will give you a good explanation of the sequence of events that caused the meltdown. 

Just when you think you have done everything possible to protect the public, a combination of events unravels everything. 

Eric Holdeman is a contributing writer for Emergency Management magazine and is the former director of the King County, Wash., Office of Emergency Management.