The objective is to provide a detailed overview (concepts and methods) in the field of Human and Organizational Factors (HOF). This training is intended for: ▪ engineers, ▪ researchers, ▪ other professionals from Nuclear Regulatory Authorities and Technical Support Organisations involved in nuclear safety activities. The five-day training module will cover the following subjects: The Überlingen Accident working group. Introduction to Human and Organizational Factors: key concepts and methods. From human error to organizational reliability. Human and organizational factors in design. Human and organizational factors in operation. Human and organizational factors in dismantling. Operating experience feedback and event investigation. Analysis of an event. Working groups. Man-machine interface and control-room supervision. Human and organizational factors and nuclear assessment. Human reliability analysis. Crisis management. Safety culture.