<P> Though all of Japan 's nuclear reactors successfully withstood shaking from the 2011 Tohoku earthquake , flooding from the ensuing tsunami caused the failure of cooling systems at the Fukushima I Nuclear Power Plant on March 11 . Japan 's first - ever nuclear emergency was declared , and 140,000 residents within 20 km ( 12 mi ) of the plant were evacuated . A comprehensive assessment by international experts on the health risks associated with the Fukushima I nuclear power plant disaster concluded in 2013 that , for the general population inside and outside Japan , the predicted risks were low and no observable increases in cancer rates above baseline rates were anticipated . All Japan 's nuclear plants were closed , or their operations suspended for safety inspections . The last of Japan 's fifty reactors ( Tomari - 3 ) went offline for maintenance on May 5 , 2012 , leaving Japan completely without nuclear - produced electrical power for the first time since 1970 . </P>
<P> Though all of Japan 's nuclear reactors successfully withstood shaking from the 2011 Tohoku earthquake , flooding from the ensuing tsunami caused the failure of cooling systems at the Fukushima I Nuclear Power Plant on March 11 . Japan 's first - ever nuclear emergency was declared , and 140,000 residents within 20 km ( 12 mi ) of the plant were evacuated . A comprehensive assessment by international experts on the health risks associated with the Fukushima I nuclear power plant disaster concluded in 2013 that , for the general population inside and outside Japan , the predicted risks were low and no observable increases in cancer rates above baseline rates were anticipated . All Japan 's nuclear plants were closed , or their operations suspended for safety inspections . The last of Japan 's fifty reactors ( Tomari - 3 ) went offline for maintenance on May 5 , 2012 , leaving Japan completely without nuclear - produced electrical power for the first time since 1970 . </P>
where was the nuclear power plant in japan
where was the nuclear power plant in japan
Fukushima
Fukushima