Tactical Ventilation Flashcards
What is the purpose of tactical ventilation
To release products of combustion to prevent fire spread. It can reduce temperatures and improve visibility
What is the definition of tactical ventilation
The removal of heated air, smoke or other airborne contaminants from a structure, and their replacement with a supply of fresher air
What affects smoke movement
New openings, people moving, the us of branches
What is in smoke
A mixture of fine solid particles, droplets of water, other liquids and fire gasses.
What are the three methods of tactical ventilation
Self ventilation
Automatic ventilation
Tactical ventilation
What is self ventilation
The fire damages the structure of the premises. For example, a roof collapse, or a window break
What is automatic ventilation
The operation of pre-installed vents. Examples are powered ventilation systems or roof lights
What are the principles of tactical ventilation
The high level vent should be down wind of the low level vent.
The high level vent should be made FIRST.
If conditions create a potential backdraught, the compartment should be ventilated from outside the building.
The outlet should be covered by firefighters in BA with charged branches.
What is defensive tactical ventilation
Carried out away from the fire. It improves access and escape routes.
What is offensive tactical ventilation
When ventilation is applied directly to the fire compartment. This is to limit fire spread and improve conditions in the compartment.
The outlet MUST be covered with a charged branch.
