Triggered by the Three Mile Island and Chernobyl nuclear accidents in 1979 and 1986, the Human Factors Research Center (HFC) was established in 1987 to promote researches for improving safety and reliability at nuclear power plants by reducing human errors. Research activities in human factors aim for improving safety level at work by considering the human-machine interface, environment, and adaptation to society. HFC conducts a wide range of research activities not only in the nuclear industry but also in various other industries in order to enhance the so-called "Human Factors Culture - forming a safety climate by placing importance on human".