FDNY COF P-98 Practice Test 2026 | Verified Answers |
Exam Prep
1. When hydrostatic testing a pressure vessel or pipe, failing special instruction,
it is usual to test at a pressure of:
One-and-one-third times the maximum working pressure of the vessel
One-and-one-half times the maximum working pressure of the
vessel
Two times the maximum working pressure of the vessel
Two-and-one half times the maximum working pressure of the vessel
2. Describe the role of atomizing air in the operation of fuel-oil burners.
Atomizing air is used to transport oil through pipes.
Atomizing air prevents oil from leaking during transfer.
Atomizing air cools the oil before it is burned.
Atomizing air helps to create a fine mist of oil for efficient
combustion.
3. Describe the implications of excessive vacuum readings in the context of
fuel-oil transfer systems.
Excessive vacuum readings mean that the oil strainer is functioning
correctly.
Excessive vacuum readings are a sign of proper oil flow and
combustion efficiency.
Excessive vacuum readings suggest that there may be an
obstruction in the suction line, which can hinder the flow of oil and
affect system performance.
, Excessive vacuum readings indicate that the system is operating
efficiently without issues.
4. Describe the purpose of having a tight container at the base of shafts for
fuel-oil transfer systems.
The tight container is used for storing excess fuel.
The tight container is primarily for aesthetic purposes.
The tight container allows for easy access to the oil supply.
The tight container prevents leaks and spills, ensuring safety and
compliance with regulations.
5. Which is the Guide's definition of should?
General guideline
Suggestion to be considered
Action considered mandatory
Strong recommendation
6. In a scenario where an oil burner is malfunctioning and poses a fire risk, what
immediate action should be taken regarding the emergency shutoff controls?
Notify the maintenance team and wait for instructions.
Activate the Emergency Shutoff control to stop oil flow.
Inspect the burner for damage before taking any action.
Continue operating the burner until it cools down.
7. What is the safety device used to relieve excessive pressure in an oil piping
system?
Shut-off valve
, Flow control valve
Pressure relief valve
Check valve
8. Describe the significance of regularly testing float switches in fuel-oil storage
tanks within the context of safety regulations.
Testing float switches is only necessary during initial installation.
Float switches do not require regular testing as they are self-
regulating devices.
Float switches should be tested only when a malfunction is suspected.
Regular testing of float switches is crucial for ensuring safety and
preventing overflows in fuel-oil storage tanks.
9. If a building's fuel-oil storage tank has not been inspected for over a year,
what potential risks could arise from this oversight?
Increased risk of leaks and non-compliance with safety regulations.
Lower operational costs for the building.
No risks, as inspections are not critical.
Improved efficiency of the fuel-oil system.
10. In a scenario where the photoelectric cell fails to detect a flame, what safety
measure should be implemented to prevent potential hazards?
Automatic shutdown of the oil burner
Manual inspection of the burner
Adjust the combustion air supply
Increase oil flow to the burner
, 11. If a fuel-oil transfer system is producing a yellow flame, what immediate
action should be taken to ensure safety and efficiency?
Replace the burner immediately.
Increase the air supply to the burner.
Reduce the fuel flow to the burner.
Ignore the flame color as it is not significant.
12. Describe the role of the primary control in the operation of an oil burner.
The primary control monitors the temperature of the oil.
The primary control is used for maintenance checks on the burner.
The primary control shuts down the burner in case of an emergency.
The primary control is responsible for activating the oil burner and
regulating its operation.
13. Describe the role of the low water cut-off in maintaining safety within fuel-oil
transfer systems.
The low water cut-off monitors the oil temperature to prevent
combustion failure.
The low water cut-off ensures that the fuel is burned efficiently.
The low water cut-off regulates the air supply to the burner.
The low water cut-off prevents the burner from operating when the
water level is too low, reducing the risk of overheating and
potential hazards.
14. If a fuel-oil transfer system is designed with a suction line positioned only 8
inches from the bottom of the tank, what potential issue could arise?
Exam Prep
1. When hydrostatic testing a pressure vessel or pipe, failing special instruction,
it is usual to test at a pressure of:
One-and-one-third times the maximum working pressure of the vessel
One-and-one-half times the maximum working pressure of the
vessel
Two times the maximum working pressure of the vessel
Two-and-one half times the maximum working pressure of the vessel
2. Describe the role of atomizing air in the operation of fuel-oil burners.
Atomizing air is used to transport oil through pipes.
Atomizing air prevents oil from leaking during transfer.
Atomizing air cools the oil before it is burned.
Atomizing air helps to create a fine mist of oil for efficient
combustion.
3. Describe the implications of excessive vacuum readings in the context of
fuel-oil transfer systems.
Excessive vacuum readings mean that the oil strainer is functioning
correctly.
Excessive vacuum readings are a sign of proper oil flow and
combustion efficiency.
Excessive vacuum readings suggest that there may be an
obstruction in the suction line, which can hinder the flow of oil and
affect system performance.
, Excessive vacuum readings indicate that the system is operating
efficiently without issues.
4. Describe the purpose of having a tight container at the base of shafts for
fuel-oil transfer systems.
The tight container is used for storing excess fuel.
The tight container is primarily for aesthetic purposes.
The tight container allows for easy access to the oil supply.
The tight container prevents leaks and spills, ensuring safety and
compliance with regulations.
5. Which is the Guide's definition of should?
General guideline
Suggestion to be considered
Action considered mandatory
Strong recommendation
6. In a scenario where an oil burner is malfunctioning and poses a fire risk, what
immediate action should be taken regarding the emergency shutoff controls?
Notify the maintenance team and wait for instructions.
Activate the Emergency Shutoff control to stop oil flow.
Inspect the burner for damage before taking any action.
Continue operating the burner until it cools down.
7. What is the safety device used to relieve excessive pressure in an oil piping
system?
Shut-off valve
, Flow control valve
Pressure relief valve
Check valve
8. Describe the significance of regularly testing float switches in fuel-oil storage
tanks within the context of safety regulations.
Testing float switches is only necessary during initial installation.
Float switches do not require regular testing as they are self-
regulating devices.
Float switches should be tested only when a malfunction is suspected.
Regular testing of float switches is crucial for ensuring safety and
preventing overflows in fuel-oil storage tanks.
9. If a building's fuel-oil storage tank has not been inspected for over a year,
what potential risks could arise from this oversight?
Increased risk of leaks and non-compliance with safety regulations.
Lower operational costs for the building.
No risks, as inspections are not critical.
Improved efficiency of the fuel-oil system.
10. In a scenario where the photoelectric cell fails to detect a flame, what safety
measure should be implemented to prevent potential hazards?
Automatic shutdown of the oil burner
Manual inspection of the burner
Adjust the combustion air supply
Increase oil flow to the burner
, 11. If a fuel-oil transfer system is producing a yellow flame, what immediate
action should be taken to ensure safety and efficiency?
Replace the burner immediately.
Increase the air supply to the burner.
Reduce the fuel flow to the burner.
Ignore the flame color as it is not significant.
12. Describe the role of the primary control in the operation of an oil burner.
The primary control monitors the temperature of the oil.
The primary control is used for maintenance checks on the burner.
The primary control shuts down the burner in case of an emergency.
The primary control is responsible for activating the oil burner and
regulating its operation.
13. Describe the role of the low water cut-off in maintaining safety within fuel-oil
transfer systems.
The low water cut-off monitors the oil temperature to prevent
combustion failure.
The low water cut-off ensures that the fuel is burned efficiently.
The low water cut-off regulates the air supply to the burner.
The low water cut-off prevents the burner from operating when the
water level is too low, reducing the risk of overheating and
potential hazards.
14. If a fuel-oil transfer system is designed with a suction line positioned only 8
inches from the bottom of the tank, what potential issue could arise?
