Advanced Firefighter Technician Exam
UPDATED QUESTIONS AND CORRECT
ANSWERS
How is foam used as a suppression agent? - CORRECT ANSWER Removes oxygen
Foam % - CORRECT ANSWER Class A materials 0.1 to 1%
Class B materials 3-6%
Foam Application - CORRECT ANSWER -Roll-on is used for a burning liquid spill
-Bank-Down is used when an elevated object is near a burning pool of liquid
-Rain-Down is used when the other two methods are not feasible and on above ground
storage tanks
Class A foam - CORRECT ANSWER Foam specially designed for use on Class A
combustibles. Class A foams, hydrocarbon-based surfactants are essentially wetting agents
that reduce the surface tension of water and allow it to soak into combustible materials more
easily than plain water.
Class B foam - CORRECT ANSWER Foam fire-suppression agent designed for use on
unignited or ignited Class B flammable or combustible liquids.
AFFF (Aqueous Film Forming Foam) - CORRECT ANSWER Used as either 1%, 3%,
or 6%
Which foam should be used for polar solvents? - CORRECT ANSWER Alcohol
resistive foam
, define soluability - CORRECT ANSWER Ability for substance to dissolve in a solvent
What elements are needed to produce firefighting foam? - CORRECT
ANSWER Suction, 200psi, eductor, up to 150' after eductor
Air aspirating foam nozzle - CORRECT ANSWER They can be designed to bring the
air into either the front or the back of the nozzle. Air is drawn into the nozzle through the
Venturi effect. As the foam solution passes through the center of the nozzle, a low level of
pressure is created, which allows the air to enter the nozzle. This process consumes energy.
The more air that's drawn in, the more energy is consumed. This causes a reduction in stream
reach.
BLEVE stands for - CORRECT ANSWER Boiling Liquid Expanding Vapor Explosion
Combination Attack - CORRECT ANSWER Extinguishing a fire by using both a direct
and an indirect attack. This method combines the steam-generating technique of a ceiling
level attack with an attack on the burning materials near floor level.
Direct Attack - CORRECT ANSWER In structural fire fighting, an attack method that
involves the discharge of water or a foam stream directly onto the burning fuel.
Indirect attack - CORRECT ANSWER A method of fire suppression where
suppression activity takes place some distance from the fire perimeter, often taking advantage
of fire barriers
A cylinder fire that is burning from the relief valve should be extinguished - CORRECT
ANSWER True
Streams on a cylinder should be directed where? - CORRECT ANSWER Directly onto
fire
UPDATED QUESTIONS AND CORRECT
ANSWERS
How is foam used as a suppression agent? - CORRECT ANSWER Removes oxygen
Foam % - CORRECT ANSWER Class A materials 0.1 to 1%
Class B materials 3-6%
Foam Application - CORRECT ANSWER -Roll-on is used for a burning liquid spill
-Bank-Down is used when an elevated object is near a burning pool of liquid
-Rain-Down is used when the other two methods are not feasible and on above ground
storage tanks
Class A foam - CORRECT ANSWER Foam specially designed for use on Class A
combustibles. Class A foams, hydrocarbon-based surfactants are essentially wetting agents
that reduce the surface tension of water and allow it to soak into combustible materials more
easily than plain water.
Class B foam - CORRECT ANSWER Foam fire-suppression agent designed for use on
unignited or ignited Class B flammable or combustible liquids.
AFFF (Aqueous Film Forming Foam) - CORRECT ANSWER Used as either 1%, 3%,
or 6%
Which foam should be used for polar solvents? - CORRECT ANSWER Alcohol
resistive foam
, define soluability - CORRECT ANSWER Ability for substance to dissolve in a solvent
What elements are needed to produce firefighting foam? - CORRECT
ANSWER Suction, 200psi, eductor, up to 150' after eductor
Air aspirating foam nozzle - CORRECT ANSWER They can be designed to bring the
air into either the front or the back of the nozzle. Air is drawn into the nozzle through the
Venturi effect. As the foam solution passes through the center of the nozzle, a low level of
pressure is created, which allows the air to enter the nozzle. This process consumes energy.
The more air that's drawn in, the more energy is consumed. This causes a reduction in stream
reach.
BLEVE stands for - CORRECT ANSWER Boiling Liquid Expanding Vapor Explosion
Combination Attack - CORRECT ANSWER Extinguishing a fire by using both a direct
and an indirect attack. This method combines the steam-generating technique of a ceiling
level attack with an attack on the burning materials near floor level.
Direct Attack - CORRECT ANSWER In structural fire fighting, an attack method that
involves the discharge of water or a foam stream directly onto the burning fuel.
Indirect attack - CORRECT ANSWER A method of fire suppression where
suppression activity takes place some distance from the fire perimeter, often taking advantage
of fire barriers
A cylinder fire that is burning from the relief valve should be extinguished - CORRECT
ANSWER True
Streams on a cylinder should be directed where? - CORRECT ANSWER Directly onto
fire
