Engine Company Operations Flashcards
Construction Types
I - Fire Resistive
II - Non-Combustible
III - Ordinary
IV- Heavy Timber
V - Wood Frame
Fire Tetrahedron
1) Oxygen
2) Heat
3) Fuel
4) Chain Reaction
Stages of Fire Growth
- Growth
- Fully Developed
- Decay
Components of Size-Up
- Pre Incident
- Pre Arrival
- On-Scene Report
- Situation Report
- Interior Size-Up
- Ongoing Size-Up
– _________ occurs when all surfaces and objects within a space have been heated to
their ignition temperature and simultaneously combust. _________can take place at the point
between the growth and fully developed stages of a fire.
Flashover
A ________ is an explosion that occurs when oxygen enters an oxygen-deficient
smoldering fire. Conditions typically exist during a fire’s decay stage, after the fire compartment has consumed all available oxygen.
backdraft
________takes place when pressure from the fire area pushes heated gases into uninvolved areas, causing flames to present in layers of smoke.
Rollover
Warning signs of a possible backdraft include the following:
dense smoke with no visible flame in a tightly closed compartment,
black smoke pushing around closed doors or window frames,
glass stained with smoke condensation and pulsating from the fire’s pressure, and
the reversal of air movement pulling smoke back into a building through a doorway.
Smoke leaving a structure has four inherent characteristics
volume, velocity, density, and color
Viewed from outside a building, slow-moving smoke indicates the seat of the fire is …?
remote from
the exhaust point or that the fire compartment is still absorbing heat
A fire’s incipient stage typically produces _____ _____ as the fuel off-gases moisture and water vapor.
white smoke
Brown or black smoke signals an ?
underventilated fire
________ involves a systematic look at the entire fire scene to ensure no further traces of fire exist. Firefighters should check voids closest to the seat of the fire first, working outward until
unburned material is reached.
Overhaul
Threats to safety on the fireground primarily come from two categories:
advanced fire conditions and
collapse potential.
Smoke can indicate a fire’s location, and _____ ________ represents the most reliable indicator of a fire’s location
smoke velocity
The light smoke between the floor and the heavier ceiling smoke typically travels toward the?
fire’s seat.
A __________ involves the coordinated and specific relocation of units
and their equipment from an area deemed untenable to a specific area deemed safe for continued operations.
withdrawal
A fast and effective method of estimating the stretch involves the following formula:
Setback + width of building + length of building + 1/2 length (25 ft) per floor + 1 length at the point of attack
Traditional hydraulic ventilation practices have indicated the nozzle firefighter should place ___ the nozzle from the ventilation outlet, with a wide fog stream covering ___ of the ventilation opening.
2 ft , 80%
In a ______ _____ , personnel should apply a stream directly onto the burning materials until the fire darkens down
direct attack
In an ________ ______, personnel direct the stream at the ceiling above the fire or the ceiling in the fire compartment. The ceiling will break the fire stream up into droplets, allowing steam conversion to displace the oxygen and absorb heat.
indirect attack,
_ _____ _____ involves using an exterior master stream to knock down the main body of fire. Once darkened down, the engine company transitions to a handline for an interior offensive attack
A blitz attack
If the engine officer finds the entrance door to the structure or immediate fire area open, they should?
close it to control the flow path
Smoke can indicate a fire’s location, and _____ _______ represents the most reliable indicator of
a fire’s location
smoke velocity
