NJ Black Seal Low Pressure, 1 of 3
Exam Q&A 100% Solved | Rated A+
The basic function of an automatic feedwater regulator on a boiler is to: -
✔✔maintain proper water level
If a one square inch column of water is one foot tall, how much does it
weigh? - ✔✔.433 lbs
Where is the flame sensing device located on a boiler? - ✔✔front
Cracking of the boiler metal can be caused by: - ✔✔caustic embrittlement
How would you test the operation of the flame failure device? - ✔✔by
shutting off the fuel supply valve
Where are the combustible gases located in a water tube boiler? -
✔✔flowing around the tubes
What are you preventing by increasing the pressure within a cold boiler
gradually? - ✔✔thermal shock
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, When performing a hydrostatic test, the pressure on the boiler should not
exceed: - ✔✔10 psi above 1.5 times the MAWP
A boiler operator log must be maintained in a boiler room containing over: -
✔✔100 horsepower
If a flame sensing device notices that there is a flame failure, what device
does it secure? - ✔✔fuel solenoid valve
What type of draft has a fan between the boiler and the chimney? -
✔✔induced
What is used to control alkalinity? - ✔✔caustic soda
What is the best way to decide the blowdown frequency for a boiler? -
✔✔boiler water analysis
What device is used to obtain sufficient static head for the returning
condensate in a two-pipe gravity return system? - ✔✔return trap
What is the maximum temperature a hot water boiler can be to qualify in
New Jersey as low pressure? - ✔✔250 degrees
What type of boiler is an HRT (horizontal return tube)? - ✔✔fire-tube
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
Exam Q&A 100% Solved | Rated A+
The basic function of an automatic feedwater regulator on a boiler is to: -
✔✔maintain proper water level
If a one square inch column of water is one foot tall, how much does it
weigh? - ✔✔.433 lbs
Where is the flame sensing device located on a boiler? - ✔✔front
Cracking of the boiler metal can be caused by: - ✔✔caustic embrittlement
How would you test the operation of the flame failure device? - ✔✔by
shutting off the fuel supply valve
Where are the combustible gases located in a water tube boiler? -
✔✔flowing around the tubes
What are you preventing by increasing the pressure within a cold boiler
gradually? - ✔✔thermal shock
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, When performing a hydrostatic test, the pressure on the boiler should not
exceed: - ✔✔10 psi above 1.5 times the MAWP
A boiler operator log must be maintained in a boiler room containing over: -
✔✔100 horsepower
If a flame sensing device notices that there is a flame failure, what device
does it secure? - ✔✔fuel solenoid valve
What type of draft has a fan between the boiler and the chimney? -
✔✔induced
What is used to control alkalinity? - ✔✔caustic soda
What is the best way to decide the blowdown frequency for a boiler? -
✔✔boiler water analysis
What device is used to obtain sufficient static head for the returning
condensate in a two-pipe gravity return system? - ✔✔return trap
What is the maximum temperature a hot water boiler can be to qualify in
New Jersey as low pressure? - ✔✔250 degrees
What type of boiler is an HRT (horizontal return tube)? - ✔✔fire-tube
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
