Qualitative Assessment of Emergency Response Condition during Seismic Natech Events for Tehran City

Recent decades with the birth and growth of the world's industries have witnessed the destructive effects of severe natural events on industrial plants and the consequences and events caused by natural events have drawn a lot of attention to this emerging category of technological events caused by natural events (NaTech). Lack of preparation to face this class of events and confusion to make decisions in providing the appropriate response to the existing conditions by macro decision-makers and emergency response forces and the public have always been observed. Various reasons can be mentioned for it, including the multidisciplinary nature of the subject, the emerging and low statistics of these events, the insufficiency of specialized information, and the adoption of approaches similar to process events. Types of damage to infrastructures and lifelines due to the occurrence of natural events are prominent cases and there are many problems and obstacles in responding to the circumstances of the event. In this article, the investigation of natural seismic events in other countries is discussed and after reviewing the description of the events, the response situation in emergency situations has been investigated and categorized. Using other studies, the status of lifelines and infrastructures is investigated; the response status to emergency situations in the event of a possible natural seismic event in Tehran is discussed.