Operational Guideline 5.23 Ventilation Flashcards
What are the three types of ventilation?
Horizontal
vertical
positive pressure
Time from ignition to flashover is _______________________ than in fires with legacy fuels.
approximately 30 times faster
What contributes to fire growth inside a confined space?
temperature rise due to the types of fuels and confined radiant heat.
Define Ventilation:
The coordinated and systematic removal of the products of combustion from a structure involved in fire.
Flow path:
The movement of heat and smoke from areas of high pressure to low pressure.
Heat Release Rate:
The rate at which heat energy is released by the burning of a fuel and oxygen mixture.
Ventilation Limited Fire
The HRR is slowed due to the fire consuming the available oxygen and no new oxygen being introduced.
The primary responsibilities of the first due truck company will be________
life safety
The primary responsibility of the second due truck company will be_________________
unfinished first due responsibilities, laddering upper floors for egress, and vertical ventilation if needed.
What are the operational modes for truck companies
All in for search
All out fo vent
splitting
Every opening in a structure made during a fire operation
creates a new flow path and has an impact on existing flow paths
By practicing ___________ firefighters can isolate the fire area and shut off potential flow paths.
door control
Ventilation opening should never be created ___________ an advancing hose line
behind
Improper _____________________________ of a ventilation opening can resile in serious injury or death of firefighters and/or civilians
placement and timing
What are some indications that interior crews are ready for ventilation?
visual confirmation
radio communication
audible indications
dark smoke turning to steam
