horizontal Ventilation Flashcards
The systematic and coordinated removal of the products of combustion and replacement of these products with cooler fresh air.
ventilation
The movement of heat and smoke from the higher air pressure within the building fire area to all other lower air pressure areas both inside and
outside of a structure involved in fire.
Flow path
The opening of a window/door in a structure opposite the advancing interior crews for the purpose of allowing heat, smoke, and fire gases to escape from the structure into the atmosphere.
Coordinated horizontal ventilation
the first due engine company (or first company stretching an interior attack line)
will make three critical radio communications; The radio communications are as follows:
a. “Fire attack is making entry”. This means the attack entry point is
being blocked open.
b. The location of the fire if not already communicated.
c. The command “Take the glass” to signal the OV that the attack line
is in place and Coordinated Horizontal Ventilation can be initiated
by opening the window nearest the area of fire origin.
The primary responsibility of the first due truck company will be
LIFE SAFETY.
Proper placement of a horizontal ventilation opening is on the ___ side of
the fire from the advancing hose line, and in the actual fire room (or as close as possible).
opposite
Proper timing to initiate Coordinated Horizontal Ventilation is when the
interior crews are breathing from their SCBA and have a CHARGED hose
line in position to knock down the fire, _____
are making a “push” to the fire room, or are actively applying water to the seat of the fire.
Remember, opening the entry door is _____
horizontal ventilation
___Professional discipline and sound forcible entry tactics must be employed.
Professional discipline
Firefighters preparing to “take glass” for ventilation or entry must
be in ____
full PPE including turnouts, gloves, SCBA, and helmet.
If doors or windows in a fire involved structure are left open by
occupants or if the fire has broken windows prior to arrival of
firefighters, this information must be communicated to _____
all members operating on the fireground.
A wind of just ___ blowing into that opening can create a wind
driven fire scenario
10 mph
Attic fires or fires in knee walls of attic spaces that have been turned into living spaces may need to be ventilated
vertically
____ventilation is the appropriate tactic if it is believed that backdraft conditions exist.
Vertical
