What types of emergency situations and places of their possible occurrence.

Technological emergencies are divided into traffic accidents, fires and explosions, accidents involving the release of accidentally hazardous substances, accidents involving the release of radioactive substances, accidents involving the release of biologically hazardous substances, the sudden collapse of buildings and structures, accidents on electric power systems and communal life support systems, accidents at industrial wastewater treatment plants, hydrodynamic accidents.
Transport accidents and catastrophes most often occur at production facilities (in depots, at stations, in ports, at airports), as well as during traffic. Fires and explosions mainly occur at industrial enterprises that use explosives and flammable substances in the production process, as well as railway and pipeline transport, carrying out the transport of fire and explosive cargo.
Accidents with the release (threat of release) of hazardous chemically hazardous substances usually occur in chemically hazardous industrial plants.
Accidents with the release (threat of release) of radioactive substances are possible at radiation hazardous facilities: nuclear power plants, enterprises for the manufacture and processing of nuclear fuel, the disposal of radioactive waste, etc.
Accidents with the release (threat of release) of biohazardous substances occur at the appropriate enterprises and in research institutions during transportation and as a result of the loss of such substances.
The sudden collapse of buildings and structures is caused by a large crowd of people in a limited area; strong vibration from passing trains or heavy vehicles; excessive load on the upper floors of buildings and other reasons. These accidents occur in industrial buildings and structures;
in buildings and structures of residential, social and cultural purposes; on transport communications.
Accidents in electric power systems and communal life support systems most often occur in autonomous power plants and electric power networks with interruptions in power supply to consumers; on transport electrical contact networks; on communal systems with mass emissions of pollutants; on heating networks in the cold season; in drinking water supply systems; on public gas pipelines.
Accidents at wastewater treatment plants, as a rule, occur at industrial enterprises and are accompanied by emissions of pollutants into the environment.
Hydraulic accidents occur mainly at hydraulic structures, most often on dams.

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