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Control measure

Cordon control: Ignited flammable vapours

Control measure knowledge

This control measure should be read in conjunction with Cordon controls – Hazardous materials.  

Once a flammable vapour cloud has ignited, responders have limited options (if any) to disrupt or intervene. Where such hazards are encountered it is essential that suitable hazard areas are implemented in all directions and all responders and members of the public are evacuated. 

Strategic actions

Fire and rescue services should:
  • Provide procedures and support arrangements regarding the hazards that may be encountered and actions to take when implementing hazard areas for flammable vapours

Tactical actions

Incident commanders should:
  • Establish exclusion zones, inner and outer cordons based on level of risk from ignited flammable vapours

  • Ensure all personnel and members of the public are evacuated from the identified hazard area