Summary
Emergency evacuation is the urgent immediate egress or escape of people away from an area that contains an imminent threat, an ongoing threat or a hazard to lives or property. Examples range from the small-scale evacuation of a building due to a storm or fire to the large-scale evacuation of a city because of a flood, bombardment or approaching weather system, especially a tropical cyclone. In situations involving hazardous materials or possible contamination, evacuees may be decontaminated prior to being transported out of the contaminated area. Evacuation planning is an important aspect of business management of which emergency evacuation forms a part. Evacuations may be carried out before, during, or after disasters such as: Natural disasters Eruptions of volcanoes Tropical cyclones Floods Earthquakes Tsunamis Wildfires/Bushfires Industrial accidents Chemical spill Nuclear accident Transport Road accidents Train wreck Emergency aircraft evacuation Fires Industrial fires Military attacks Bombings Terrorist attacks Military battles Imminent nuclear war Structural failure Viral outbreak Robbery Plane crash Emergency evacuation plans are developed to ensure the safest and most efficient evacuation time of all expected residents of a structure, city, or region. A benchmark "evacuation time" for different hazards and conditions is established. These benchmarks can be established through using best practices, regulations, or using simulations, such as modeling the flow of people in a building, to determine the benchmark. Proper planning will use multiple exits, contra-flow lanes, and special technologies to ensure full, fast and complete evacuation. Consideration for personal situations which may affect an individual's ability to evacuate is taken into account, including alarm signals that use both aural and visual alerts, and also evacuation equipment such as sleds, pads, and chairs for non-ambulatory people. Considering the persons with a disability during an emergency evacuation is important.
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