Large natural disasters such as the Wenchuan earthquake in 2008, and the Great East Japan earthquake and tsunami in 2011, showed their potential to trigger secondary disasters such as landslides, and dam breaks, but also the release of toxic chemicals, nuclear accidents, fires, explosions, and oil spills. These types of natural disaster triggered technological accidents are known as Natech accidents. Lessons from Natech accidents from around the world show the need to assess and manage these types of complex disaster risks which result from complex interactions between the natural and technological systems, the built environment, and within social systems in urban and rural areas. The risk posed to nearby residents from secondary hazards needs to be better understood and taken into account in disaster management and emergency response and recovery planning at all levels in order to achieve societal resilience. This course will provide the students hands on training in the assessment of Natech hazard risks, and their risk management. The course will present case studies, and include introductions to modeling and simulation of accident scenarios and physical effects in order to identify and understand potential short-term and long-term consequences. The course will build on a field survey of buildings and community exposure and vulnerability analysis in areas affected by the Wenchuan earthquake in 2008. Finally, the students discuss and learn about the major safety issues and constraints (e.g., technical, social, economic, and ethical) when making “risk management” decisions.