FDNY CoF – FuelOil Piping and Storage System P98 Ultimate
Exam Study
This professional regulatory resource is a premier test bank explicitly engineered for
facility managers and maintenance engineers preparing for the FDNY Certificate of
Fitness (CoF) P98 Written Examination. It features 300 high-yield multiple-choice
practice questions, 100% verified correct answers, and thorough technical
rationales fully updated to align with the latest New York City Fire Code and
Mechanical Code frameworks. Mastering these premium testing parameters ensures
absolute competence across general and personal supervision rules, day-tank capacity
thresholds, hydrostatic testing metrics, leak detection collectors, and critical burner
combustion safety standards to guarantee you pass your touch-screen computer
test at MetroTech on your very first attempt
Question 1
According to the NYC Fire Code, what is the maximum allowable quantity of fuel
oil that may be stored in a single aboveground storage tank inside a building?
A. 275 gallons
B. 660 gallons
C. 1,375 gallons
D. 10,000 gallons
Answer: C. 1,375 gallons.
Rationale: NYC Fire Code permits in-kind replacement of fuel-oil storage tanks of the
same capacity and not exceeding 1,375 gallons inside a building. Larger capacities require
special approval.
,Question 2
What is the required fire-resistance rating for an enclosure around indoor fuel-oil
piping that is located less than 10 feet from a lot line?
A. 1 hour
B. 2 hours
C. 3 hours
D. No rating required
Answer: B. 2 hours.
Rationale: Piping shall be located a minimum of 10 feet from lot lines, or a 2-hour fire-
rated enclosure shall be provided.
Question 3
A fuel-oil storage tank is installed outdoors. What is the minimum separation
distance required between the tank and an adjacent property line?
A. 5 feet
B. 10 feet
C. 15 feet
D. 20 feet
Answer: B. 10 feet.
Rationale: Outdoor fuel-oil storage tanks must be at least 10 feet from lot lines unless a
2-hour fire-rated enclosure is provided.
Question 4
What is the minimum diameter of a vent pipe for a fuel-oil storage tank?
A. 1/2 inch
B. 3/4 inch
,C. 1-1/4 inches
D. 2 inches
Answer: C. 1-1/4 inches.
Rationale: Vent pipes shall not be less than one and one-quarter inches (1-1/4") in
diameter to allow proper venting during filling and withdrawal.
Question 5
Which type of valve is designed to close automatically when the fuel-oil reaches a
certain temperature due to fire?
A. Gate valve
B. Globe valve
C. Fusible link valve
D. Check valve
Answer: C. Fusible link valve.
Rationale: A fusible link valve has a heat-sensitive element that melts at a specific
temperature, causing the valve to close and stop fuel flow in a fire.
Question 6
What is the purpose of an oil safety valve (OSV) in a fuel-oil system?
A. To regulate fuel pressure
B. To prevent fuel flow if the burner flame fails
C. To filter fuel
D. To measure fuel level
Answer: B. To prevent fuel flow if the burner flame fails.
Rationale: An OSV is a safety device that stops fuel-oil flow if the burner flame goes out
or if the valve loses electrical power, preventing unburned fuel from accumulating.
, Question 7
When must a P-98 Certificate of Fitness holder be present during fuel-oil transfer?
A. Only during filling operations
B. At all times during the transfer operation
C. Only during emergencies
D. Weekly
Answer: B. At all times during the transfer operation.
Rationale: Supervision requires the certificate holder to be actually present and observing
the work at all times during the transfer operation.
Question 8
What is the first action a P-98 holder should take if a fuel-oil leak is discovered
during transfer?
A. Continue the transfer and monitor
B. Stop the transfer immediately and contain the spill
C. Notify the fire department only
D. Increase pump pressure to clear the line
Answer: B. Stop the transfer immediately and contain the spill.
Rationale: Any leak during transfer requires immediate cessation of the transfer,
containment of the spill, and notification of appropriate authorities.
Question 9
What is the maximum capacity of a day tank used in a fuel-oil system?
Exam Study
This professional regulatory resource is a premier test bank explicitly engineered for
facility managers and maintenance engineers preparing for the FDNY Certificate of
Fitness (CoF) P98 Written Examination. It features 300 high-yield multiple-choice
practice questions, 100% verified correct answers, and thorough technical
rationales fully updated to align with the latest New York City Fire Code and
Mechanical Code frameworks. Mastering these premium testing parameters ensures
absolute competence across general and personal supervision rules, day-tank capacity
thresholds, hydrostatic testing metrics, leak detection collectors, and critical burner
combustion safety standards to guarantee you pass your touch-screen computer
test at MetroTech on your very first attempt
Question 1
According to the NYC Fire Code, what is the maximum allowable quantity of fuel
oil that may be stored in a single aboveground storage tank inside a building?
A. 275 gallons
B. 660 gallons
C. 1,375 gallons
D. 10,000 gallons
Answer: C. 1,375 gallons.
Rationale: NYC Fire Code permits in-kind replacement of fuel-oil storage tanks of the
same capacity and not exceeding 1,375 gallons inside a building. Larger capacities require
special approval.
,Question 2
What is the required fire-resistance rating for an enclosure around indoor fuel-oil
piping that is located less than 10 feet from a lot line?
A. 1 hour
B. 2 hours
C. 3 hours
D. No rating required
Answer: B. 2 hours.
Rationale: Piping shall be located a minimum of 10 feet from lot lines, or a 2-hour fire-
rated enclosure shall be provided.
Question 3
A fuel-oil storage tank is installed outdoors. What is the minimum separation
distance required between the tank and an adjacent property line?
A. 5 feet
B. 10 feet
C. 15 feet
D. 20 feet
Answer: B. 10 feet.
Rationale: Outdoor fuel-oil storage tanks must be at least 10 feet from lot lines unless a
2-hour fire-rated enclosure is provided.
Question 4
What is the minimum diameter of a vent pipe for a fuel-oil storage tank?
A. 1/2 inch
B. 3/4 inch
,C. 1-1/4 inches
D. 2 inches
Answer: C. 1-1/4 inches.
Rationale: Vent pipes shall not be less than one and one-quarter inches (1-1/4") in
diameter to allow proper venting during filling and withdrawal.
Question 5
Which type of valve is designed to close automatically when the fuel-oil reaches a
certain temperature due to fire?
A. Gate valve
B. Globe valve
C. Fusible link valve
D. Check valve
Answer: C. Fusible link valve.
Rationale: A fusible link valve has a heat-sensitive element that melts at a specific
temperature, causing the valve to close and stop fuel flow in a fire.
Question 6
What is the purpose of an oil safety valve (OSV) in a fuel-oil system?
A. To regulate fuel pressure
B. To prevent fuel flow if the burner flame fails
C. To filter fuel
D. To measure fuel level
Answer: B. To prevent fuel flow if the burner flame fails.
Rationale: An OSV is a safety device that stops fuel-oil flow if the burner flame goes out
or if the valve loses electrical power, preventing unburned fuel from accumulating.
, Question 7
When must a P-98 Certificate of Fitness holder be present during fuel-oil transfer?
A. Only during filling operations
B. At all times during the transfer operation
C. Only during emergencies
D. Weekly
Answer: B. At all times during the transfer operation.
Rationale: Supervision requires the certificate holder to be actually present and observing
the work at all times during the transfer operation.
Question 8
What is the first action a P-98 holder should take if a fuel-oil leak is discovered
during transfer?
A. Continue the transfer and monitor
B. Stop the transfer immediately and contain the spill
C. Notify the fire department only
D. Increase pump pressure to clear the line
Answer: B. Stop the transfer immediately and contain the spill.
Rationale: Any leak during transfer requires immediate cessation of the transfer,
containment of the spill, and notification of appropriate authorities.
Question 9
What is the maximum capacity of a day tank used in a fuel-oil system?
