Fdny Cof P-98 Fuel-Oil Piping And Storage System Exam
Fdny Cof P-98 Fuel-Oil Piping And Storage System Exam
Questions And Correct Answers With Rationales.pdf - 50
Questions with Answers
Page 1 of1 27
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, Fdny Cof P-98 Fuel-Oil Piping And Storage System Exam
Q1. A 10,000-gallon aboveground fuel-oil storage tank is located 15 feet from a
building wall. Under NYC Fire Code, what is the minimum required separation
distance if the tank is unprotected?
A. 5 feet
B. 10 feet
C. 15 feet
D. 20 feet
Correct Answer: B. 10 feet
Rationale: NYC Fire Code Table 5704.2.9.6.1 requires a minimum separation of 10 feet
between an unprotected aboveground tank and a building wall for tanks up to 10,000
gallons. Distances less than 10 feet require fire-rated protection or special approval.
Why Wrong:
A - 5 feet is insufficient and applies only to protected tanks or smaller capacities under
specific conditions.
C - 15 feet exceeds the minimum for this tank size and would be required only for
larger capacities or specific hazard occupancies.
D - 20 feet is not required for a 10,000-gallon unprotected tank under NYC Fire Code.
Reference: NYC Fire Code §5704.2.9.6.1, Table 5704.2.9.6.1 ( )
Q2. During a hydraulic calculation for a two-pipe fuel-oil system, the total equivalent
length is 250 ft, flow rate is 20 GPM, and the allowable pressure drop is 5 psi. Using
the Darcy-Weisbach equation with a friction factor of 0.03, what is the maximum
allowable pipe diameter (nominal)?
A. 1 inch
B. 1.25 inches
C. 1.5 inches
D. 2 inches
Correct Answer: C. 1.5 inches
Rationale: Solving h_f = f (L/D) (V²/2g) and converting to psi yields a required diameter
of approximately 1.5 inches to stay within 5 psi pressure drop. Smaller diameters produce
excessive friction loss; larger diameters are unnecessarily costly.
Why Wrong:
A - 1-inch pipe would result in a pressure drop far exceeding 5 psi at 20 GPM.
B - 1.25-inch pipe still yields a pressure drop greater than the allowable 5 psi.
D - 2-inch pipe would reduce pressure drop below the allowable limit but is not the
maximum allowable diameter required.
Reference: NFPA 31, Standard for the Installation of Oil-Burning Equipment, Chapter 7
( )
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, Fdny Cof P-98 Fuel-Oil Piping And Storage System Exam
Q3. Which of the following best describes the required secondary containment for a
fuel-oil storage tank located inside a building?
A. A concrete dike capable of containing 110% of the tank volume
B. A liquid-tight containment area with a capacity of at least 110% of the largest tank
C. A steel pan with a capacity of 100% of the tank volume
D. No secondary containment is required if the tank is double-walled
Correct Answer: B. A liquid-tight containment area with a capacity of at least 110%
of the largest tank
Rationale: NYC Fire Code §5704.2.9.7 requires secondary containment for indoor tanks
to be liquid-tight and capable of containing at least 110% of the largest tank's capacity.
Double-walled tanks may exempt containment only if approved as an integral secondary
containment system.
Why Wrong:
A - A concrete dike is one method, but the code requires a liquid-tight containment
area, not specifically concrete.
C - 100% capacity is insufficient; code requires 110%.
D - Double-walled tanks may provide integral secondary containment, but the blanket
statement that no containment is required is false.
Reference: NYC Fire Code §5704.2.9.7 ( )
Q4. A P-98 Certificate of Fitness holder discovers a slow leak in a fuel-oil supply line.
According to FDNY regulations, what is the FIRST action that must be taken?
A. Notify the building owner and schedule repairs within 24 hours
B. Shut off the fuel supply and eliminate all ignition sources
C. Apply a temporary patch and monitor the leak
D. Document the leak and continue operation until the next inspection
Correct Answer: B. Shut off the fuel supply and eliminate all ignition sources
Rationale: FDNY Fire Code §5704.2.12 and P-98 Certificate of Fitness guidelines
mandate immediate shutdown of fuel supply and elimination of ignition sources upon
discovery of a leak. This prevents fire, explosion, and environmental hazards.
Why Wrong:
A - Notification is required, but immediate shutdown takes precedence over
scheduling.
C - Temporary patching is unsafe and prohibited; the system must be shut down.
D - Continuing operation with a known leak is a violation and dangerous.
Reference: FDNY Certificate of Fitness P-98 Study Guide, Section 4: Emergency
Procedures ( )
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Page
Fdny Cof P-98 Fuel-Oil Piping And Storage System Exam
Questions And Correct Answers With Rationales.pdf - 50
Questions with Answers
Page 1 of1 27
Page
, Fdny Cof P-98 Fuel-Oil Piping And Storage System Exam
Q1. A 10,000-gallon aboveground fuel-oil storage tank is located 15 feet from a
building wall. Under NYC Fire Code, what is the minimum required separation
distance if the tank is unprotected?
A. 5 feet
B. 10 feet
C. 15 feet
D. 20 feet
Correct Answer: B. 10 feet
Rationale: NYC Fire Code Table 5704.2.9.6.1 requires a minimum separation of 10 feet
between an unprotected aboveground tank and a building wall for tanks up to 10,000
gallons. Distances less than 10 feet require fire-rated protection or special approval.
Why Wrong:
A - 5 feet is insufficient and applies only to protected tanks or smaller capacities under
specific conditions.
C - 15 feet exceeds the minimum for this tank size and would be required only for
larger capacities or specific hazard occupancies.
D - 20 feet is not required for a 10,000-gallon unprotected tank under NYC Fire Code.
Reference: NYC Fire Code §5704.2.9.6.1, Table 5704.2.9.6.1 ( )
Q2. During a hydraulic calculation for a two-pipe fuel-oil system, the total equivalent
length is 250 ft, flow rate is 20 GPM, and the allowable pressure drop is 5 psi. Using
the Darcy-Weisbach equation with a friction factor of 0.03, what is the maximum
allowable pipe diameter (nominal)?
A. 1 inch
B. 1.25 inches
C. 1.5 inches
D. 2 inches
Correct Answer: C. 1.5 inches
Rationale: Solving h_f = f (L/D) (V²/2g) and converting to psi yields a required diameter
of approximately 1.5 inches to stay within 5 psi pressure drop. Smaller diameters produce
excessive friction loss; larger diameters are unnecessarily costly.
Why Wrong:
A - 1-inch pipe would result in a pressure drop far exceeding 5 psi at 20 GPM.
B - 1.25-inch pipe still yields a pressure drop greater than the allowable 5 psi.
D - 2-inch pipe would reduce pressure drop below the allowable limit but is not the
maximum allowable diameter required.
Reference: NFPA 31, Standard for the Installation of Oil-Burning Equipment, Chapter 7
( )
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Page
, Fdny Cof P-98 Fuel-Oil Piping And Storage System Exam
Q3. Which of the following best describes the required secondary containment for a
fuel-oil storage tank located inside a building?
A. A concrete dike capable of containing 110% of the tank volume
B. A liquid-tight containment area with a capacity of at least 110% of the largest tank
C. A steel pan with a capacity of 100% of the tank volume
D. No secondary containment is required if the tank is double-walled
Correct Answer: B. A liquid-tight containment area with a capacity of at least 110%
of the largest tank
Rationale: NYC Fire Code §5704.2.9.7 requires secondary containment for indoor tanks
to be liquid-tight and capable of containing at least 110% of the largest tank's capacity.
Double-walled tanks may exempt containment only if approved as an integral secondary
containment system.
Why Wrong:
A - A concrete dike is one method, but the code requires a liquid-tight containment
area, not specifically concrete.
C - 100% capacity is insufficient; code requires 110%.
D - Double-walled tanks may provide integral secondary containment, but the blanket
statement that no containment is required is false.
Reference: NYC Fire Code §5704.2.9.7 ( )
Q4. A P-98 Certificate of Fitness holder discovers a slow leak in a fuel-oil supply line.
According to FDNY regulations, what is the FIRST action that must be taken?
A. Notify the building owner and schedule repairs within 24 hours
B. Shut off the fuel supply and eliminate all ignition sources
C. Apply a temporary patch and monitor the leak
D. Document the leak and continue operation until the next inspection
Correct Answer: B. Shut off the fuel supply and eliminate all ignition sources
Rationale: FDNY Fire Code §5704.2.12 and P-98 Certificate of Fitness guidelines
mandate immediate shutdown of fuel supply and elimination of ignition sources upon
discovery of a leak. This prevents fire, explosion, and environmental hazards.
Why Wrong:
A - Notification is required, but immediate shutdown takes precedence over
scheduling.
C - Temporary patching is unsafe and prohibited; the system must be shut down.
D - Continuing operation with a known leak is a violation and dangerous.
Reference: FDNY Certificate of Fitness P-98 Study Guide, Section 4: Emergency
Procedures ( )
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