Chernobyl and Fukushima nuclear accidents: similarities and differences

During the almost seven decades of use nuclear fission for electric energy production two major accidents took place, i.e., 1986 Chernobyl accident and 2011 Fukushima one. They were caused by reactor power-surge loss-of-coolant, respectively. Both occurred during hot power shutdown had identical root causes, poor safety culture management in industry state authorities. A brief comparison facility characteristics, disaster response methods, as well their health, social, economic, political adverse effects is attempted. The radiological impact was much higher than that one; however, a similar statement may not hold other types impact.