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P-99 LOW PRESSURE BOILER COF FDNY
NEWEST 2025 2026 COMPLETE 100
QUESTIONS AND CORRECT DETAILED
ANSWERS VERIFIED ANSWERS BRAND NEW
VERSION HIGH YIELD STUDY GUIDE ACTUAL
UPDATED PRACTICE QUESTIONS
CERTIFICATION EXAM PREPARATION GRADED
A+ SUCCESS REVIEW
Low pressure steam boilers are defined as having a maximum operating pressure of: A. 30
psi
B. 15 psi
C. 100 psi
D. 25 psi
CORRECT ANSWER: B. 15 psi
Low pressure hot water boilers are defined as operating at a maximum temperature of:
A. 212°F
B. 250°F
C. 275°F
D. 300°F
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CORRECT ANSWER: B. 250°F
The main purpose of a safety valve on a boiler is to:
A. Control steam pressure
B. Prevent overpressure explosions
C. Maintain water level
D. Regulate fuel input
CORRECT ANSWER: B. Prevent overpressure explosions
How often must the boiler logbook be updated by the operator?
A. Weekly
B. Daily
C. Monthly
D. Only during inspections
CORRECT ANSWER: B. Daily
Which device is used to indicate the water level inside a boiler?
A. Thermostat
B. Sight glass (gauge glass)
C. Safety valve
D. Steam trap
CORRECT ANSWER: B. Sight glass (gauge glass)
What is the minimum number of low water cutoffs required on a low pressure boiler?
A. None
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B. One
C. Two
D. Three
CORRECT ANSWER: B. One
The blowdown valve on a boiler is used to:
A. Increase steam production
B. Remove sludge and sediment from the boiler
C. Adjust water pressure
D. Reset the burner
CORRECT ANSWER: B. Remove sludge and sediment from the boiler
What is the maximum allowable working pressure for a low pressure hot water boiler? A. 15
psi
B. 25 psi
C. 30 psi
D. 160 psi
CORRECT ANSWER: D. 160 psi
The boiler room must have sufficient:
A. Lighting only
B. Ventilation and combustion air supply
C. Windows
D. Emergency exits every 10 feet
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CORRECT ANSWER: B. Ventilation and combustion air supply
Which fuel is most commonly used in NYC low pressure boilers?
A. Wood pellets
B. Oil and natural gas
C. Propane only
D. Diesel only
CORRECT ANSWER: B. Oil and natural gas
When testing a safety valve, you should:
A. Tap it with a hammer
B. Lift the try lever
C. Close the valve completely
D. Remove it for inspection
CORRECT ANSWER: B. Lift the try lever
In case of a low-water condition, the operator should first:
A. Add water quickly
B. Shut down the burner immediately
C. Open the blowdown valve
D. Reset the pressure control
CORRECT ANSWER: B. Shut down the burner immediately
What is the color of a natural gas flame under proper combustion?
A. Yellow and smoky
P-99 LOW PRESSURE BOILER COF FDNY
NEWEST 2025 2026 COMPLETE 100
QUESTIONS AND CORRECT DETAILED
ANSWERS VERIFIED ANSWERS BRAND NEW
VERSION HIGH YIELD STUDY GUIDE ACTUAL
UPDATED PRACTICE QUESTIONS
CERTIFICATION EXAM PREPARATION GRADED
A+ SUCCESS REVIEW
Low pressure steam boilers are defined as having a maximum operating pressure of: A. 30
psi
B. 15 psi
C. 100 psi
D. 25 psi
CORRECT ANSWER: B. 15 psi
Low pressure hot water boilers are defined as operating at a maximum temperature of:
A. 212°F
B. 250°F
C. 275°F
D. 300°F
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CORRECT ANSWER: B. 250°F
The main purpose of a safety valve on a boiler is to:
A. Control steam pressure
B. Prevent overpressure explosions
C. Maintain water level
D. Regulate fuel input
CORRECT ANSWER: B. Prevent overpressure explosions
How often must the boiler logbook be updated by the operator?
A. Weekly
B. Daily
C. Monthly
D. Only during inspections
CORRECT ANSWER: B. Daily
Which device is used to indicate the water level inside a boiler?
A. Thermostat
B. Sight glass (gauge glass)
C. Safety valve
D. Steam trap
CORRECT ANSWER: B. Sight glass (gauge glass)
What is the minimum number of low water cutoffs required on a low pressure boiler?
A. None
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B. One
C. Two
D. Three
CORRECT ANSWER: B. One
The blowdown valve on a boiler is used to:
A. Increase steam production
B. Remove sludge and sediment from the boiler
C. Adjust water pressure
D. Reset the burner
CORRECT ANSWER: B. Remove sludge and sediment from the boiler
What is the maximum allowable working pressure for a low pressure hot water boiler? A. 15
psi
B. 25 psi
C. 30 psi
D. 160 psi
CORRECT ANSWER: D. 160 psi
The boiler room must have sufficient:
A. Lighting only
B. Ventilation and combustion air supply
C. Windows
D. Emergency exits every 10 feet
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CORRECT ANSWER: B. Ventilation and combustion air supply
Which fuel is most commonly used in NYC low pressure boilers?
A. Wood pellets
B. Oil and natural gas
C. Propane only
D. Diesel only
CORRECT ANSWER: B. Oil and natural gas
When testing a safety valve, you should:
A. Tap it with a hammer
B. Lift the try lever
C. Close the valve completely
D. Remove it for inspection
CORRECT ANSWER: B. Lift the try lever
In case of a low-water condition, the operator should first:
A. Add water quickly
B. Shut down the burner immediately
C. Open the blowdown valve
D. Reset the pressure control
CORRECT ANSWER: B. Shut down the burner immediately
What is the color of a natural gas flame under proper combustion?
A. Yellow and smoky
