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Fukushima Daiichi nuclear disaster

3:28

Video analysis prompts new theory on Fukushima explosion

1:48

Fukushima nuclear disaster

3:44

Fukushima's nuclear emergency - by Nature Video

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Meet the robots looking for fuel after Fukushima's Daiichi nuclear disaster

1:13

Watch: Eight years on, Fukushima nuclear disaster continues to haunt environment

The Fukushima nuclear disaster was a 2011 nuclear accident at the Fukushima Daiichi Nuclear Power Plant in Ōkuma, Fukushima, Japan. The proximate cause of the disaster was the 2011 Tōhoku earthquake and tsunami that occurred 11 March 2011.
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  • Plant description 

  • Cooling 

  • Backup generators 

  • Zircaloy 

  • Background 

  • Initial effects of earthquake 

  • Arrival of tsunami 

  • Disabling of emergency generators 

  • Hydrogen explosions 

  • Core meltdowns in units 1, 2, and 3 

  • Damage to unit 4 

  • Units 5 and 6 

  • Analysis of the response 

  • Poor communication and delays 

  • 1967: Layout of the emergency-cooling system 

  • 1991: Backup generator of Reactor 1 flooded 

  • 2000 and 2008: Tsunami studies ignored 

  • Vulnerability to earthquakes 

  • Releases of radioactive contamination 

  • Contamination in the eastern Pacific 

  • Event rating 

  • Aftermath 

  • Contaminated water 

  • Risks from ionizing radiation 

  • Thyroid screening program 

  • Effects on evacuees 

  • Radioactivity releases 

  • Insurance 

  • Compensation 

  • Energy policy implications 

  • Equipment, facility, and operational changes 

  • Japan 

  • International 

  • Investigations 

  • Investigation Committee 

  • Video, drawings, and images 

  • Other