FDNY S17 Commercial Cooking Wet Chemical
Fire Extinguishing Systems Inspection, Testing,
and Servicing Technician (Citywide) Practice
Exam Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What type of fire is a wet chemical fire suppression system
primarily designed to combat?
a) Class A
b) Class B
c) Class K
d) Class C
c) Class K
Class K fires involve cooking oils and fats, which wet chemical
agents are specifically formulated to extinguish.
2. How often must wet chemical extinguishing systems in
commercial kitchens be inspected under FDNY regulations?
a) Monthly
b) Quarterly
c) Semi-annually
d) Annually
d) Annually
, Annual inspections ensure that the system is functional and
compliant with safety codes.
3. Which component of a wet chemical system must be checked for
proper pressure during an inspection?
a) Hood filters
b) Nozzles
c) Cylinder gauge
d) Manual pull station
c) Cylinder gauge
The cylinder gauge indicates whether the system is pressurized
and ready to discharge.
4. What is the correct method to clean a wet chemical extinguisher
nozzle?
a) Submerge in water
b) Use a dry cloth
c) Use mild detergent and water
d) Spray with compressed air
c) Use mild detergent and water
Nozzles should be cleaned carefully to prevent blockage while
avoiding damage to the discharge path.
5. What should be done if a wet chemical system has a damaged
fusible link?
a) Bend it back into shape
b) Replace it immediately
c) Spray it with lubricant
d) Leave it until next inspection
b) Replace it immediately
, Fusible links are critical for system activation; a damaged link
compromises safety.
6. Which NFPA standard governs commercial kitchen fire
extinguishing systems?
a) NFPA 10
b) NFPA 17
c) NFPA 96
d) NFPA 101
c) NFPA 96
NFPA 96 provides standards for ventilation control and fire
protection of commercial cooking operations.
7. What is the primary purpose of the manual pull station on a wet
chemical system?
a) Test the alarm
b) Manually discharge the system
c) Open the hood filter
d) Monitor pressure
b) Manually discharge the system
The manual pull station allows staff to activate the suppression
system in an emergency.
8. During inspection, what is the acceptable range for cylinder
pressure?
a) 50–100 psi
b) 100–150 psi
c) Manufacturer-specified range
d) 200–250 psi
c) Manufacturer-specified range
, Pressure varies by manufacturer; the gauge must be within the
specified operating range.
9. What should be done if the wet chemical agent is found below the
required level during a test?
a) Add water
b) Recharge immediately
c) Leave as is until next inspection
d) Shake the cylinder
b) Recharge immediately
Low agent levels prevent the system from effectively suppressing a
fire.
10. Which of the following is a sign that a nozzle may be
clogged?
a) Pressure gauge reads full
b) Uneven discharge during testing
c) Manual pull station is accessible
d) Fusible link is intact
b) Uneven discharge during testing
Uneven or partial discharge indicates blockage or obstruction in
the nozzle.
11. How often should fusible links in a wet chemical system be
replaced if exposed to high heat?
a) Every 6 months
b) Annually
c) Only when broken
d) Every 2 years
b) Annually
Fire Extinguishing Systems Inspection, Testing,
and Servicing Technician (Citywide) Practice
Exam Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What type of fire is a wet chemical fire suppression system
primarily designed to combat?
a) Class A
b) Class B
c) Class K
d) Class C
c) Class K
Class K fires involve cooking oils and fats, which wet chemical
agents are specifically formulated to extinguish.
2. How often must wet chemical extinguishing systems in
commercial kitchens be inspected under FDNY regulations?
a) Monthly
b) Quarterly
c) Semi-annually
d) Annually
d) Annually
, Annual inspections ensure that the system is functional and
compliant with safety codes.
3. Which component of a wet chemical system must be checked for
proper pressure during an inspection?
a) Hood filters
b) Nozzles
c) Cylinder gauge
d) Manual pull station
c) Cylinder gauge
The cylinder gauge indicates whether the system is pressurized
and ready to discharge.
4. What is the correct method to clean a wet chemical extinguisher
nozzle?
a) Submerge in water
b) Use a dry cloth
c) Use mild detergent and water
d) Spray with compressed air
c) Use mild detergent and water
Nozzles should be cleaned carefully to prevent blockage while
avoiding damage to the discharge path.
5. What should be done if a wet chemical system has a damaged
fusible link?
a) Bend it back into shape
b) Replace it immediately
c) Spray it with lubricant
d) Leave it until next inspection
b) Replace it immediately
, Fusible links are critical for system activation; a damaged link
compromises safety.
6. Which NFPA standard governs commercial kitchen fire
extinguishing systems?
a) NFPA 10
b) NFPA 17
c) NFPA 96
d) NFPA 101
c) NFPA 96
NFPA 96 provides standards for ventilation control and fire
protection of commercial cooking operations.
7. What is the primary purpose of the manual pull station on a wet
chemical system?
a) Test the alarm
b) Manually discharge the system
c) Open the hood filter
d) Monitor pressure
b) Manually discharge the system
The manual pull station allows staff to activate the suppression
system in an emergency.
8. During inspection, what is the acceptable range for cylinder
pressure?
a) 50–100 psi
b) 100–150 psi
c) Manufacturer-specified range
d) 200–250 psi
c) Manufacturer-specified range
, Pressure varies by manufacturer; the gauge must be within the
specified operating range.
9. What should be done if the wet chemical agent is found below the
required level during a test?
a) Add water
b) Recharge immediately
c) Leave as is until next inspection
d) Shake the cylinder
b) Recharge immediately
Low agent levels prevent the system from effectively suppressing a
fire.
10. Which of the following is a sign that a nozzle may be
clogged?
a) Pressure gauge reads full
b) Uneven discharge during testing
c) Manual pull station is accessible
d) Fusible link is intact
b) Uneven discharge during testing
Uneven or partial discharge indicates blockage or obstruction in
the nozzle.
11. How often should fusible links in a wet chemical system be
replaced if exposed to high heat?
a) Every 6 months
b) Annually
c) Only when broken
d) Every 2 years
b) Annually
