1
NJ Black Seal Low Pressure Exam (Actual Exam 2026)
| Complete Questions and Correct Answers | Updated
Version
The basic function of an automatic feedwater regulator on a boiler is to: -
(ANSWER)maintain proper water level
If a one square inch column of water is one foot tall, how much does it weigh? -
(ANSWER).433 lbs
Where is the flame sensing device located on a boiler? - (ANSWER)front
Cracking of the boiler metal can be caused by: - (ANSWER)caustic embrittlement
How would you test the operation of the flame failure device? - (ANSWER)by
shutting off the fuel supply valve
Where are the combustible gases located in a water tube boiler? -
(ANSWER)flowing around the tubes
What are you preventing by increasing the pressure within a cold boiler
gradually? - (ANSWER)thermal shock
, 2
When performing a hydrostatic test, the pressure on the boiler should not
exceed: - (ANSWER)10 psi above 1.5 times the MAWP
A boiler operator log must be maintained in a boiler room containing over: -
(ANSWER)100 horsepower
If a flame sensing device notices that there is a flame failure, what device does it
secure? - (ANSWER)fuel solenoid valve
What type of draft has a fan between the boiler and the chimney? -
(ANSWER)induced
What is used to control alkalinity? - (ANSWER)caustic soda
What is the best way to decide the blowdown frequency for a boiler? -
(ANSWER)boiler water analysis
What device is used to obtain sufficient static head for the returning condensate
in a two-pipe gravity return system? - (ANSWER)return trap
, 3
What is the maximum temperature a hot water boiler can be to qualify in New
Jersey as low pressure? - (ANSWER)250 degrees
What type of boiler is an HRT (horizontal return tube)? - (ANSWER)fire-tube
What is the purge cycle in a boiler meant to do? - (ANSWER)remove combustible
gases
Which valve is allowed between the boiler and safety valve? - (ANSWER)no valve
Which is a common type of feedwater regulator in a low pressure plant? -
(ANSWER)pressure sensitive device
When open, an OS&Y (outside stem & yoke) valve offers ----- to the flow of steam.
- (ANSWER)no resistance
What section of the ASME code do hot water heating boilers fall under? -
(ANSWER)Section IV
NJ Black Seal Low Pressure Exam (Actual Exam 2026)
| Complete Questions and Correct Answers | Updated
Version
The basic function of an automatic feedwater regulator on a boiler is to: -
(ANSWER)maintain proper water level
If a one square inch column of water is one foot tall, how much does it weigh? -
(ANSWER).433 lbs
Where is the flame sensing device located on a boiler? - (ANSWER)front
Cracking of the boiler metal can be caused by: - (ANSWER)caustic embrittlement
How would you test the operation of the flame failure device? - (ANSWER)by
shutting off the fuel supply valve
Where are the combustible gases located in a water tube boiler? -
(ANSWER)flowing around the tubes
What are you preventing by increasing the pressure within a cold boiler
gradually? - (ANSWER)thermal shock
, 2
When performing a hydrostatic test, the pressure on the boiler should not
exceed: - (ANSWER)10 psi above 1.5 times the MAWP
A boiler operator log must be maintained in a boiler room containing over: -
(ANSWER)100 horsepower
If a flame sensing device notices that there is a flame failure, what device does it
secure? - (ANSWER)fuel solenoid valve
What type of draft has a fan between the boiler and the chimney? -
(ANSWER)induced
What is used to control alkalinity? - (ANSWER)caustic soda
What is the best way to decide the blowdown frequency for a boiler? -
(ANSWER)boiler water analysis
What device is used to obtain sufficient static head for the returning condensate
in a two-pipe gravity return system? - (ANSWER)return trap
, 3
What is the maximum temperature a hot water boiler can be to qualify in New
Jersey as low pressure? - (ANSWER)250 degrees
What type of boiler is an HRT (horizontal return tube)? - (ANSWER)fire-tube
What is the purge cycle in a boiler meant to do? - (ANSWER)remove combustible
gases
Which valve is allowed between the boiler and safety valve? - (ANSWER)no valve
Which is a common type of feedwater regulator in a low pressure plant? -
(ANSWER)pressure sensitive device
When open, an OS&Y (outside stem & yoke) valve offers ----- to the flow of steam.
- (ANSWER)no resistance
What section of the ASME code do hot water heating boilers fall under? -
(ANSWER)Section IV
