2026
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Fdny Cof P-98 Fuel Oil Piping And Storage System Exam Questions
And Correct Answers With Rationales Instant Download 118
Questions
Clinical | Rationale-Driven - Pass Guaranteed - A+ Graded
118 1 118
QUESTIONS SECTIONS RATIONALES
WHAT THIS COVERS
01 Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98
02 Competency required to supervise
03 Maintain fuel oil piping
04 Storage systems in New York City under the NYC Fire Code
05 Referenced standards (NFPA 30
06 NFPA 31). It covers tank installation
ABOUT THIS ASSESSMENT
This examination assesses the knowledge and competency required to supervise, inspect, and maintain fuel oil piping and storage
systems in New York City under the NYC Fire Code and referenced standards (NFPA 30, NFPA 31). It covers tank installation,
piping materials, system components, fire safety, inspection/testing/maintenance, leak detection, emergency response, and FDNY
permit/COF regulations. The exam is designed to certify individuals as Certificate of Fitness holders for P-98 operations.
, EXAMINATION QUESTIONS
SECTION 1 - Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98
(Questions 1 to 118)
1. What is the primary function of a fusible link valve in a fuel oil supply line?
A. To automatically shut off fuel flow upon fire detection
B. To regulate pressure during pump operation
C. To prevent backflow during tank filling
D. To vent air from the system during startup
Answer: A [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: A fusible link valve closes when exposed to fire temperatures, stopping fuel flow. Pressure regulation, backflow prevention,
and venting are handled by other devices.
2. Which document must be kept on-site for a fuel oil storage system?
A. Manufacturer's warranty
B. As-built drawings and inspection records
C. Fuel supplier contract
D. Employee training log
Answer: B [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: NYC Fire Code and FDNY rules require as-built drawings and inspection/maintenance records to be maintained on-site and
made available to inspectors. Warranties, supplier contracts, and training logs are not the primary required documents for the system
itself.
3. A 10,000-gal #4 fuel oil tank is filled at 60°F. At what temperature does the tank's 95% fill limit become unsafe?
A. Approximately 85°F, because thermal expansion exceeds the 5% ullage
B. Approximately 100°F, because expansion is offset by vapor space
C. Approximately 120°F, because #4 oil has a low coefficient of expansion
D. Any temperature, because the 95% limit is a conservative fixed rule
Answer: A [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: Fuel oil expands about 0.00045 per °F; a 5% ullage (500 gal) is consumed by roughly 25°F rise, so ~85°F is the safe limit.
Higher temperatures overflow; #4 oil expands similarly to #2, and the 95% rule is not arbitrary but expansion-based.
4. Which condition mandates immediate notification to FDNY for a fuel oil system?
A. Routine filter replacement
B. Uncontrolled release to a drain
C. Scheduled tank inspection
D. Pump motor replacement
Answer: B [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: NYC Fire Code §5704.4 requires immediate notification of the FDNY for any release of fuel oil that cannot be controlled
or that enters a drain or waterway. Routine maintenance and scheduled inspections do not trigger emergency notification.
5. Which pump installation detail is required when a fuel oil transfer pump discharges to a day tank at 15 psig?
A. A bypass relief valve set at 15 psig
B. A pressure relief valve set at or below the day tank design pressure
C. A check valve only, since the pump is positive displacement
D. A pressure gauge only, with no relief device
Answer: B [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: NFPA 31 requires a pressure relief valve set at or below the receiving tank's design pressure to protect against overpressure;
a bypass set at 15 psig, a check valve alone, or a gauge alone does not provide adequate protection.
Page 2 | Fdny Cof P-98 Fuel Oil Piping And Storage System Exam Questions And Correct Answers With Rationales Instant Download 118 Questions
, 6. A 5,000-gal basement fuel oil tank must be vented to atmosphere; which vent sizing satisfies NYC Fire Code for fill
rate?
A. Vent pipe sized equal to the fill pipe diameter, with a minimum of 1.25 in. I.P.S.
B. Vent pipe one nominal size smaller than the fill pipe, minimum 1 in. I.P.S.
C. Vent pipe sized at half the fill pipe cross-sectional area, minimum 1.5 in. I.P.S.
D. Vent pipe equal to the fill pipe diameter, but never less than 2 in. I.P.S. regardless of fill size
Answer: A [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: NYC Fire Code (2022) and NFPA 30/31 require the vent to be at least the same nominal size as the fill pipe, with a 1.25 in.
minimum, to prevent tank overpressure during delivery. B and C undersize the vent; D overstates the absolute minimum and ignores
fill-pipe equivalence.
7. Which condition would require immediate shutdown of a fuel oil transfer pump?
A. Slight vibration during operation
B. Normal operating temperature
C. Leak at the pump seal
D. Intermittent pressure gauge fluctuation
Answer: C [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: A leak at the pump seal presents an immediate fire hazard and environmental risk, requiring pump shutdown and repair per
NYC Fire Code. Slight vibration, normal temperature, and intermittent gauge fluctuation may be monitored but do not mandate
immediate shutdown.
8. During a tank tightness test, a 0.05 gal/hr loss is recorded. What is the required action?
A. No action; within allowable limit
B. Retest after 24 hours
C. Investigate and repair leak
D. Increase monitoring frequency
Answer: C [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: NFPA 30 and EPA standards require investigation and repair for any confirmed leak rate exceeding 0.05 gal/hr; a recorded
loss at this threshold indicates a probable integrity failure. Retesting or monitoring alone does not satisfy the repair obligation.
9. A leak is discovered at a tank fitting. Which immediate action sequence best complies with FDNY spill response
requirements?
A. Notify FDNY, contain spill, stop source, then clean up
B. Clean up spill, then notify FDNY within 24 hours
C. Stop source, contain spill, notify FDNY, then clean up
D. Contain spill, wait for supervisor, then notify FDNY
Answer: C [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: FDNY spill response requires stopping the source, containing the release, immediately notifying FDNY, and then cleanup;
delaying notification or performing cleanup before notification violates the sequence.
10. During a tightness test, a 1,000-gal tank loses 0.05 psi in 1 hour. What is the correct interpretation?
A. Pass; loss below 0.1 psi is acceptable
B. Fail; any pressure loss indicates a leak
C. Retest after temperature stabilization; loss may be thermal
D. Pass; the tank is within normal breathing tolerance
Answer: C [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: Pressure changes can result from temperature fluctuations, so the test must be conducted after stabilization and any loss
investigated; a 0.05 psi drop may be thermal rather than a leak. Accepting or failing without stabilization is incorrect, and normal
breathing does not apply to a sealed tightness test.
Page 3 | Fdny Cof P-98 Fuel Oil Piping And Storage System Exam Questions And Correct Answers With Rationales Instant Download 118 Questions
A+ VERIFIED
Fdny Cof P-98 Fuel Oil Piping And Storage System Exam Questions
And Correct Answers With Rationales Instant Download 118
Questions
Clinical | Rationale-Driven - Pass Guaranteed - A+ Graded
118 1 118
QUESTIONS SECTIONS RATIONALES
WHAT THIS COVERS
01 Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98
02 Competency required to supervise
03 Maintain fuel oil piping
04 Storage systems in New York City under the NYC Fire Code
05 Referenced standards (NFPA 30
06 NFPA 31). It covers tank installation
ABOUT THIS ASSESSMENT
This examination assesses the knowledge and competency required to supervise, inspect, and maintain fuel oil piping and storage
systems in New York City under the NYC Fire Code and referenced standards (NFPA 30, NFPA 31). It covers tank installation,
piping materials, system components, fire safety, inspection/testing/maintenance, leak detection, emergency response, and FDNY
permit/COF regulations. The exam is designed to certify individuals as Certificate of Fitness holders for P-98 operations.
, EXAMINATION QUESTIONS
SECTION 1 - Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98
(Questions 1 to 118)
1. What is the primary function of a fusible link valve in a fuel oil supply line?
A. To automatically shut off fuel flow upon fire detection
B. To regulate pressure during pump operation
C. To prevent backflow during tank filling
D. To vent air from the system during startup
Answer: A [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: A fusible link valve closes when exposed to fire temperatures, stopping fuel flow. Pressure regulation, backflow prevention,
and venting are handled by other devices.
2. Which document must be kept on-site for a fuel oil storage system?
A. Manufacturer's warranty
B. As-built drawings and inspection records
C. Fuel supplier contract
D. Employee training log
Answer: B [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: NYC Fire Code and FDNY rules require as-built drawings and inspection/maintenance records to be maintained on-site and
made available to inspectors. Warranties, supplier contracts, and training logs are not the primary required documents for the system
itself.
3. A 10,000-gal #4 fuel oil tank is filled at 60°F. At what temperature does the tank's 95% fill limit become unsafe?
A. Approximately 85°F, because thermal expansion exceeds the 5% ullage
B. Approximately 100°F, because expansion is offset by vapor space
C. Approximately 120°F, because #4 oil has a low coefficient of expansion
D. Any temperature, because the 95% limit is a conservative fixed rule
Answer: A [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: Fuel oil expands about 0.00045 per °F; a 5% ullage (500 gal) is consumed by roughly 25°F rise, so ~85°F is the safe limit.
Higher temperatures overflow; #4 oil expands similarly to #2, and the 95% rule is not arbitrary but expansion-based.
4. Which condition mandates immediate notification to FDNY for a fuel oil system?
A. Routine filter replacement
B. Uncontrolled release to a drain
C. Scheduled tank inspection
D. Pump motor replacement
Answer: B [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: NYC Fire Code §5704.4 requires immediate notification of the FDNY for any release of fuel oil that cannot be controlled
or that enters a drain or waterway. Routine maintenance and scheduled inspections do not trigger emergency notification.
5. Which pump installation detail is required when a fuel oil transfer pump discharges to a day tank at 15 psig?
A. A bypass relief valve set at 15 psig
B. A pressure relief valve set at or below the day tank design pressure
C. A check valve only, since the pump is positive displacement
D. A pressure gauge only, with no relief device
Answer: B [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: NFPA 31 requires a pressure relief valve set at or below the receiving tank's design pressure to protect against overpressure;
a bypass set at 15 psig, a check valve alone, or a gauge alone does not provide adequate protection.
Page 2 | Fdny Cof P-98 Fuel Oil Piping And Storage System Exam Questions And Correct Answers With Rationales Instant Download 118 Questions
, 6. A 5,000-gal basement fuel oil tank must be vented to atmosphere; which vent sizing satisfies NYC Fire Code for fill
rate?
A. Vent pipe sized equal to the fill pipe diameter, with a minimum of 1.25 in. I.P.S.
B. Vent pipe one nominal size smaller than the fill pipe, minimum 1 in. I.P.S.
C. Vent pipe sized at half the fill pipe cross-sectional area, minimum 1.5 in. I.P.S.
D. Vent pipe equal to the fill pipe diameter, but never less than 2 in. I.P.S. regardless of fill size
Answer: A [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: NYC Fire Code (2022) and NFPA 30/31 require the vent to be at least the same nominal size as the fill pipe, with a 1.25 in.
minimum, to prevent tank overpressure during delivery. B and C undersize the vent; D overstates the absolute minimum and ignores
fill-pipe equivalence.
7. Which condition would require immediate shutdown of a fuel oil transfer pump?
A. Slight vibration during operation
B. Normal operating temperature
C. Leak at the pump seal
D. Intermittent pressure gauge fluctuation
Answer: C [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: A leak at the pump seal presents an immediate fire hazard and environmental risk, requiring pump shutdown and repair per
NYC Fire Code. Slight vibration, normal temperature, and intermittent gauge fluctuation may be monitored but do not mandate
immediate shutdown.
8. During a tank tightness test, a 0.05 gal/hr loss is recorded. What is the required action?
A. No action; within allowable limit
B. Retest after 24 hours
C. Investigate and repair leak
D. Increase monitoring frequency
Answer: C [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: NFPA 30 and EPA standards require investigation and repair for any confirmed leak rate exceeding 0.05 gal/hr; a recorded
loss at this threshold indicates a probable integrity failure. Retesting or monitoring alone does not satisfy the repair obligation.
9. A leak is discovered at a tank fitting. Which immediate action sequence best complies with FDNY spill response
requirements?
A. Notify FDNY, contain spill, stop source, then clean up
B. Clean up spill, then notify FDNY within 24 hours
C. Stop source, contain spill, notify FDNY, then clean up
D. Contain spill, wait for supervisor, then notify FDNY
Answer: C [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: FDNY spill response requires stopping the source, containing the release, immediately notifying FDNY, and then cleanup;
delaying notification or performing cleanup before notification violates the sequence.
10. During a tightness test, a 1,000-gal tank loses 0.05 psi in 1 hour. What is the correct interpretation?
A. Pass; loss below 0.1 psi is acceptable
B. Fail; any pressure loss indicates a leak
C. Retest after temperature stabilization; loss may be thermal
D. Pass; the tank is within normal breathing tolerance
Answer: C [Concept: Fuel Oil Piping and Storage Systems - FDNY Certificate of Fitness P-98]
Rationale: Pressure changes can result from temperature fluctuations, so the test must be conducted after stabilization and any loss
investigated; a 0.05 psi drop may be thermal rather than a leak. Accepting or failing without stabilization is incorrect, and normal
breathing does not apply to a sealed tightness test.
Page 3 | Fdny Cof P-98 Fuel Oil Piping And Storage System Exam Questions And Correct Answers With Rationales Instant Download 118 Questions
