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F-78 inspecting, cleaning & testing of smoke detectors
Questions with Detailed Verified Answers
Standard provided by Underwriters Laboratory (UL) Ans: ✓ ✓ ✓ Addresses system smoke detector
is
UL268
Central station Ans: ✓ ✓ ✓ A facility that receives alarm signals then retransmits it to the FDNY.
Nuisance alarm Ans: ✓ ✓ ✓ An alarm caused by mechanical failure, malfunction, improper
installations or lack of maintenance, or alarm activated by a cause that cannot be determined.
Unnecessary alarm Ans: ✓ ✓ ✓ An alarm signal by a fire alarm system which functioned as
designed, but for which a department response proved unnecessary.
Example: a lit cigarette in a non smoking area triggers the alarm.
Unwarranted alarm Ans: ✓ ✓ ✓ An alarm signal triggered failed to functions as a result to
improper installation, improper maintenance, malfunctions, or other factors.
ARCS (auxiliary radio communications system) Ans: ✓ ✓ ✓ Arcs is a wireless two way building
communication system for fire department to use only.
Can you perform a visual inspection of smoke detectors? Ans: ✓ ✓ ✓ Yes as an F-78
Can you perform smoke detector inspection, testing and cleaning as an F-78? Ans: ✓ ✓ ✓ Yes you
can
Fire are measured by their heat release rate, in? Ans: ✓ ✓ ✓ KW or BTU/sec.
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What type of smoke detectors are approved? Ans: ✓ ✓ ✓ Photo electric, ionization and anything
else thats approved.
Name two reasons why smoke detectors are important? Ans: ✓ ✓ ✓ They detect the earliest
possible stages of a fire.
Occupants can evacuate and reduce the need of people that need to be rescued.
Ionization detectors Ans: ✓ ✓ ✓ Use an ionization chamber and a source of ionizing radiation to
detect smoke.
Greater amount of smoke, the higher the electrical imbalance.
When current gets to low, it'll trigger the alarm.
Photoelectric detector Ans: ✓ ✓ ✓ Are better at sensing smoky fires
What causes a nuisance alarm with a photoelectric detector? Ans: ✓ ✓ ✓ Insects
dirt
drywall dust
And other contaminations can accumulate
Projected beam type detector Ans: ✓ ✓ ✓ Shall be kept clear of opaque obstacles
its design stability even when normal light obscuration is present.
Photoelectric light obscuration smoke detector Ans: ✓ ✓ ✓ light obscuration takes place because
of smoke. Reduces light and triggers alarm.
Photoelectric light scattering smoke detectors Ans: ✓ ✓ ✓ smoke pases through the light sources
which reflect and refract onto the sensor
© Get it right 2025 Getaway - Stuvia US All rights reserved
F-78 inspecting, cleaning & testing of smoke detectors
Questions with Detailed Verified Answers
Standard provided by Underwriters Laboratory (UL) Ans: ✓ ✓ ✓ Addresses system smoke detector
is
UL268
Central station Ans: ✓ ✓ ✓ A facility that receives alarm signals then retransmits it to the FDNY.
Nuisance alarm Ans: ✓ ✓ ✓ An alarm caused by mechanical failure, malfunction, improper
installations or lack of maintenance, or alarm activated by a cause that cannot be determined.
Unnecessary alarm Ans: ✓ ✓ ✓ An alarm signal by a fire alarm system which functioned as
designed, but for which a department response proved unnecessary.
Example: a lit cigarette in a non smoking area triggers the alarm.
Unwarranted alarm Ans: ✓ ✓ ✓ An alarm signal triggered failed to functions as a result to
improper installation, improper maintenance, malfunctions, or other factors.
ARCS (auxiliary radio communications system) Ans: ✓ ✓ ✓ Arcs is a wireless two way building
communication system for fire department to use only.
Can you perform a visual inspection of smoke detectors? Ans: ✓ ✓ ✓ Yes as an F-78
Can you perform smoke detector inspection, testing and cleaning as an F-78? Ans: ✓ ✓ ✓ Yes you
can
Fire are measured by their heat release rate, in? Ans: ✓ ✓ ✓ KW or BTU/sec.
© Get it right 2025 Getaway - Stuvia US All rights reserved
, Click here for more: Scholars nexus
What type of smoke detectors are approved? Ans: ✓ ✓ ✓ Photo electric, ionization and anything
else thats approved.
Name two reasons why smoke detectors are important? Ans: ✓ ✓ ✓ They detect the earliest
possible stages of a fire.
Occupants can evacuate and reduce the need of people that need to be rescued.
Ionization detectors Ans: ✓ ✓ ✓ Use an ionization chamber and a source of ionizing radiation to
detect smoke.
Greater amount of smoke, the higher the electrical imbalance.
When current gets to low, it'll trigger the alarm.
Photoelectric detector Ans: ✓ ✓ ✓ Are better at sensing smoky fires
What causes a nuisance alarm with a photoelectric detector? Ans: ✓ ✓ ✓ Insects
dirt
drywall dust
And other contaminations can accumulate
Projected beam type detector Ans: ✓ ✓ ✓ Shall be kept clear of opaque obstacles
its design stability even when normal light obscuration is present.
Photoelectric light obscuration smoke detector Ans: ✓ ✓ ✓ light obscuration takes place because
of smoke. Reduces light and triggers alarm.
Photoelectric light scattering smoke detectors Ans: ✓ ✓ ✓ smoke pases through the light sources
which reflect and refract onto the sensor
© Get it right 2025 Getaway - Stuvia US All rights reserved
