IPMA HR ESSENTIALS PAPER SET ANSWERS AND
QUESTIONS SET A+
✔✔Stored pressure water extinguisher - ✔✔More automatic, contains water under
pressure. Once trigger or lever is squeezed, a continuous stream of water is produced.
Continues to spray until the shut off device is pressed or the tank is empty. Sprays
about 30 to 40 feet.
✔✔Foam extinguishers - ✔✔Useful for putting out fires involving flammable liquids.
Contains a solution that turns to foam when it is placed under pressure. Pressure is
applied by compressed air. When the user presses a lever, compressed air mixes with
the solution to form a foam that is sprayed on the fire. Foam is lighter than water, which
allows it to float on top of liquid fuels and smothers fire. Range 25 to 30 feet.
✔✔Halon 1211 Fire Extinguisher - ✔✔Best used for putting out electrical fires or fires
involving flammable liquids such as gasoline. These extinguishers contain pressurized
hail on gas that smothers flames. Must be used at close range 8 to 18 feet.
✔✔Carbon dioxide extinguishers - ✔✔Primarily used for electrical and flammable liquids
CO2 is a gas that does not support burning, so spraying it on a fire smothers the flames.
The CO2 is stored under its own pressure and appears as a thick cloud of gas. Must be
used at danger close range 3 to 8 feet.
✔✔PPPS Patern - ✔✔P. Pull the safety pin.
P. Point the nozzle at fire.
P. Press the handle or lever to release agent.
S. Sweep the agent back-and-forth.
✔✔Incipient Phase - ✔✔Beginning phase of fire, fire may be fairly hot probably more
than 1000°F. The temperature of the room in which the fire started may only be slightly
elevated perhaps 100°F. At this stage, the fire has not yet started to seriously deplete
the oxygen supply in the room and breathing is not yet difficult, the updraft of the fire will
rise to the highest point in the room and begin to accumulate. Smoke will be produced
in inverse proportion to the heat generated by the fire. At the incipient phase, the
QUESTIONS SET A+
✔✔Stored pressure water extinguisher - ✔✔More automatic, contains water under
pressure. Once trigger or lever is squeezed, a continuous stream of water is produced.
Continues to spray until the shut off device is pressed or the tank is empty. Sprays
about 30 to 40 feet.
✔✔Foam extinguishers - ✔✔Useful for putting out fires involving flammable liquids.
Contains a solution that turns to foam when it is placed under pressure. Pressure is
applied by compressed air. When the user presses a lever, compressed air mixes with
the solution to form a foam that is sprayed on the fire. Foam is lighter than water, which
allows it to float on top of liquid fuels and smothers fire. Range 25 to 30 feet.
✔✔Halon 1211 Fire Extinguisher - ✔✔Best used for putting out electrical fires or fires
involving flammable liquids such as gasoline. These extinguishers contain pressurized
hail on gas that smothers flames. Must be used at close range 8 to 18 feet.
✔✔Carbon dioxide extinguishers - ✔✔Primarily used for electrical and flammable liquids
CO2 is a gas that does not support burning, so spraying it on a fire smothers the flames.
The CO2 is stored under its own pressure and appears as a thick cloud of gas. Must be
used at danger close range 3 to 8 feet.
✔✔PPPS Patern - ✔✔P. Pull the safety pin.
P. Point the nozzle at fire.
P. Press the handle or lever to release agent.
S. Sweep the agent back-and-forth.
✔✔Incipient Phase - ✔✔Beginning phase of fire, fire may be fairly hot probably more
than 1000°F. The temperature of the room in which the fire started may only be slightly
elevated perhaps 100°F. At this stage, the fire has not yet started to seriously deplete
the oxygen supply in the room and breathing is not yet difficult, the updraft of the fire will
rise to the highest point in the room and begin to accumulate. Smoke will be produced
in inverse proportion to the heat generated by the fire. At the incipient phase, the
