NJ BLACK SEAL LOW PRESSURE, 1 OF 3
EXAM 2025/2026 QUESTIONS AND
ANSWERS 100% PASS
The basic function of an automatic feedwater regulator on a boiler is to: - ANS maintain
proper water level
If a one square inch column of water is one foot tall, how much does it weigh? - ANS .433 lbs
Where is the flame sensing device located on a boiler? - ANS front
Cracking of the boiler metal can be caused by: - ANS caustic embrittlement
How would you test the operation of the flame failure device? - ANS by shutting off the fuel
supply valve
Where are the combustible gases located in a water tube boiler? - ANS flowing around the
tubes
What are you preventing by increasing the pressure within a cold boiler gradually? -
ANS thermal shock
When performing a hydrostatic test, the pressure on the boiler should not exceed: - ANS 10
psi above 1.5 times the MAWP
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, A boiler operator log must be maintained in a boiler room containing over: - ANS 100
horsepower
If a flame sensing device notices that there is a flame failure, what device does it secure? -
ANS fuel solenoid valve
What type of draft has a fan between the boiler and the chimney? - ANS induced
What is used to control alkalinity? - ANS caustic soda
What is the best way to decide the blowdown frequency for a boiler? - ANS boiler water
analysis
What device is used to obtain sufficient static head for the returning condensate in a two-pipe
gravity return system? - ANS return trap
What is the maximum temperature a hot water boiler can be to qualify in New Jersey as low
pressure? - ANS 250 degrees
What type of boiler is an HRT (horizontal return tube)? - ANS fire-tube
What is the purge cycle in a boiler meant to do? - ANS remove combustible gases
Which valve is allowed between the boiler and safety valve? - ANS no valve
Which is a common type of feedwater regulator in a low pressure plant? - ANS pressure
sensitive device
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
EXAM 2025/2026 QUESTIONS AND
ANSWERS 100% PASS
The basic function of an automatic feedwater regulator on a boiler is to: - ANS maintain
proper water level
If a one square inch column of water is one foot tall, how much does it weigh? - ANS .433 lbs
Where is the flame sensing device located on a boiler? - ANS front
Cracking of the boiler metal can be caused by: - ANS caustic embrittlement
How would you test the operation of the flame failure device? - ANS by shutting off the fuel
supply valve
Where are the combustible gases located in a water tube boiler? - ANS flowing around the
tubes
What are you preventing by increasing the pressure within a cold boiler gradually? -
ANS thermal shock
When performing a hydrostatic test, the pressure on the boiler should not exceed: - ANS 10
psi above 1.5 times the MAWP
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, A boiler operator log must be maintained in a boiler room containing over: - ANS 100
horsepower
If a flame sensing device notices that there is a flame failure, what device does it secure? -
ANS fuel solenoid valve
What type of draft has a fan between the boiler and the chimney? - ANS induced
What is used to control alkalinity? - ANS caustic soda
What is the best way to decide the blowdown frequency for a boiler? - ANS boiler water
analysis
What device is used to obtain sufficient static head for the returning condensate in a two-pipe
gravity return system? - ANS return trap
What is the maximum temperature a hot water boiler can be to qualify in New Jersey as low
pressure? - ANS 250 degrees
What type of boiler is an HRT (horizontal return tube)? - ANS fire-tube
What is the purge cycle in a boiler meant to do? - ANS remove combustible gases
Which valve is allowed between the boiler and safety valve? - ANS no valve
Which is a common type of feedwater regulator in a low pressure plant? - ANS pressure
sensitive device
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
