NJ HIGH PRESSURE BLACK SEAL
EXAM PREP 2026/2027 WITH 45
QUESTIONS AND CORRECT
ANSWERS RATED A+
Where would you find downcomer tubes?
in water-tube boilers
T/F An applicant for an engineer's license may upon prior request be examined through
a reader or interpreter who may accompany the applicant, provided the reader is
accepted to the mechanical inspection bureau of boiler and pressure vessel
compliance?
False
What is the Act (Law) that establishes the licensing requirements in the state of NJ for
Stationary, Power Engineers, Refrigeration Engineers and Boiler Operators?
N.J.S.A 34:7-1
Which is the act that a Mechanical Inspection Bureau exists in New Jersey?
The New Jersey Statute Annotated (NJSA) 34:1-38.1
In accordance with ASME CSD-1, where is the installation of a manually operated
remote shutdown switch or circuit breaker to be located?
Just outside the boiler room door, unless the door is on the building exterior and it must
be marked for easy identification and installed on every exit door of the boiler room.
While making a round of your boiler room, the boiler feedwater pump is making a
strange noise. The pump casing and the temperature of the water has risen above
normal. What would most likely cause this problem?
pump cavitation issue
What is the function of a dry pipe in a boiler?
to remove moisture from the steam drum
What is the heating surface of water-tube, with a diameter of 3 1/2 inches and a length
of 20 feet?
18.32 sq. ft
One mechanical horsepower is equal to:
33,000 ft-lb/min
Which of the following is a generally accepted method for locally verifying that a manual
valve is fully closed in a depressurized static piping system?
Attempt to turn the valve hand wheel in the fully closed direction and verify no
movement.
Which of the following stack gas readings would indicate fair to good combustion taking
place?
low oxygen and carbon monoxide, high carbon dioxide
, What is the range of capacity that a High Pressure Boiler Operator can be the Chief
Engineer and work as Shift Engineer (stand watch) based on the 12:90 Boiler, Pressure
Vessel and Refrigeration rules?
Can act as Chief Engineer and stand watch of a plant with a minimum capacity of 100
HP and up to 500 HP
A boiler with a steaming capacity of 27,117 lbs/hr would be rated at how many boiler
horsepower?
786
Which formula would you use to calculate the Btu/lb heat content of fuel oil?
17,687 + 57.7 x API @ 60 degrees F
Which of the following best describes the operation of a surface condenser?
cooling water flows through tubes surround by exhaust steam
In a fire-tube boiler, how are the tubes usually attached to the tube sheet?
by rolling the tubes and beading the ends
If steam were reduced by a PRV from 500 psi to 125 psi, the steam at 125 psi would
have:
the same heat as at 500 psi
Where in a boiler system would you find a cyclone separator?
in the steam drum
The various license classifications and grades for operating high pressure boilers are
found in the NJAC reference section listed as:
table 3.4
You are installing a boiler according to the boiler rules and regulations. Where must the
filter and strainers for oil fired boilers be installed?
upstream from the safety shutoff valve
Who is responsible for obtaining pertinent operating, testing, servicing, and cleaning
instructions for the controls and safety devices?
It is the responsibility of the installing contractor to deliver all the instructions to the
equipment owner/user
When a low-water fuel cutoff (LWFCO) has activated on a hot water heating boiler what
shall happen?
Operation of the LWFCO shall cause a safety shutdown and lockout, requiring a
physical manual reset
A three-element feedwater regulator is controlled by what means?
steam flow, feedwater flow, and drum level
What would be the over-speed trip setting on a turbine with a normal operating speed of
1770 rpm?
1947 rpm
What is the function of the thrust bearing on a steam turbine?
to maintain the axial position of the rotor
What is the regulation corresponding to boiler, pressure vessels and refrigeration
systems in New Jersey?
New Jersey Administrative Code (NJAC) 12:90
EXAM PREP 2026/2027 WITH 45
QUESTIONS AND CORRECT
ANSWERS RATED A+
Where would you find downcomer tubes?
in water-tube boilers
T/F An applicant for an engineer's license may upon prior request be examined through
a reader or interpreter who may accompany the applicant, provided the reader is
accepted to the mechanical inspection bureau of boiler and pressure vessel
compliance?
False
What is the Act (Law) that establishes the licensing requirements in the state of NJ for
Stationary, Power Engineers, Refrigeration Engineers and Boiler Operators?
N.J.S.A 34:7-1
Which is the act that a Mechanical Inspection Bureau exists in New Jersey?
The New Jersey Statute Annotated (NJSA) 34:1-38.1
In accordance with ASME CSD-1, where is the installation of a manually operated
remote shutdown switch or circuit breaker to be located?
Just outside the boiler room door, unless the door is on the building exterior and it must
be marked for easy identification and installed on every exit door of the boiler room.
While making a round of your boiler room, the boiler feedwater pump is making a
strange noise. The pump casing and the temperature of the water has risen above
normal. What would most likely cause this problem?
pump cavitation issue
What is the function of a dry pipe in a boiler?
to remove moisture from the steam drum
What is the heating surface of water-tube, with a diameter of 3 1/2 inches and a length
of 20 feet?
18.32 sq. ft
One mechanical horsepower is equal to:
33,000 ft-lb/min
Which of the following is a generally accepted method for locally verifying that a manual
valve is fully closed in a depressurized static piping system?
Attempt to turn the valve hand wheel in the fully closed direction and verify no
movement.
Which of the following stack gas readings would indicate fair to good combustion taking
place?
low oxygen and carbon monoxide, high carbon dioxide
, What is the range of capacity that a High Pressure Boiler Operator can be the Chief
Engineer and work as Shift Engineer (stand watch) based on the 12:90 Boiler, Pressure
Vessel and Refrigeration rules?
Can act as Chief Engineer and stand watch of a plant with a minimum capacity of 100
HP and up to 500 HP
A boiler with a steaming capacity of 27,117 lbs/hr would be rated at how many boiler
horsepower?
786
Which formula would you use to calculate the Btu/lb heat content of fuel oil?
17,687 + 57.7 x API @ 60 degrees F
Which of the following best describes the operation of a surface condenser?
cooling water flows through tubes surround by exhaust steam
In a fire-tube boiler, how are the tubes usually attached to the tube sheet?
by rolling the tubes and beading the ends
If steam were reduced by a PRV from 500 psi to 125 psi, the steam at 125 psi would
have:
the same heat as at 500 psi
Where in a boiler system would you find a cyclone separator?
in the steam drum
The various license classifications and grades for operating high pressure boilers are
found in the NJAC reference section listed as:
table 3.4
You are installing a boiler according to the boiler rules and regulations. Where must the
filter and strainers for oil fired boilers be installed?
upstream from the safety shutoff valve
Who is responsible for obtaining pertinent operating, testing, servicing, and cleaning
instructions for the controls and safety devices?
It is the responsibility of the installing contractor to deliver all the instructions to the
equipment owner/user
When a low-water fuel cutoff (LWFCO) has activated on a hot water heating boiler what
shall happen?
Operation of the LWFCO shall cause a safety shutdown and lockout, requiring a
physical manual reset
A three-element feedwater regulator is controlled by what means?
steam flow, feedwater flow, and drum level
What would be the over-speed trip setting on a turbine with a normal operating speed of
1770 rpm?
1947 rpm
What is the function of the thrust bearing on a steam turbine?
to maintain the axial position of the rotor
What is the regulation corresponding to boiler, pressure vessels and refrigeration
systems in New Jersey?
New Jersey Administrative Code (NJAC) 12:90
