NJ HIGH PRESSURE BLACK SEAL EXAM PREP WITH CORRECT ACTUAL QUESTIONS
AND CORRECTLY WELL-DEFINED ANSWERS LATEST ALREADY GRADED A+ 2026
Question 1
In accordance with ASME CSD-1, where is the installation of a manually operated remote
shutdown switch or circuit breaker to be located?
A) Inside the boiler room next to the burner
B) In the Chief Engineer's office only
C) At the main electrical disconnect for the building
D) 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
E) Only required for boilers over 500 HP
Correct Answer: D) 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.
Rationale: ASME CSD-1 requires an emergency shutdown switch (panic button) located
outside the primary exit of the boiler room to allow operators to kill fuel and power safely
during an emergency without entering the danger zone.
Question 2
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?
A) The pump is running too fast
B) Pump cavitation issue
C) The discharge valve is fully open
D) Low voltage to the motor
E) High water level in the deaerator
Correct Answer: B) pump cavitation issue
Rationale: Cavitation occurs when the pressure at the pump inlet drops below the vapor
pressure of the water, causing bubbles to form and collapse. This results in a "marbles in a
blender" noise, vibration, and heat buildup due to friction and lack of flow.
Question 3
What is the function of a dry pipe in a boiler?
A) To supply air to the burner
B) To drain the boiler for cleaning
C) To remove moisture from the steam drum
D) To prevent the boiler from dry firing
E) To cool the flue gases
Correct Answer: C) to remove moisture from the steam drum
Rationale: A dry pipe is an internal perforated pipe located at the top of the steam space in
, 2
the drum. It acts as a separator to ensure that high-quality "dry" steam (without water
droplets) enters the main steam header.
Question 4
What is the heating surface of a water-tube with a diameter of 3 1/2 inches and a length of 20
feet?
A) 12.50 sq. ft
B) 15.25 sq. ft
C) 18.32 sq. ft
D) 21.40 sq. ft
E) 25.00 sq. ft
Correct Answer: C) 18.32 sq. ft
Rationale: Heating surface is calculated by finding the circumference (𝜋 × 𝐷) and
multiplying by length (𝐿). 3.5 inches is 0.2916 feet. 3.14159 × 0.2916 × 20 = 18.32 sq. ft.
Question 5
One mechanical horsepower is equal to:
A) 2,545 Btu/hr
B) 33,000 ft-lb/min
C) 746 Watts
D) 970.3 Btu
E) 550 ft-lb/min
Correct Answer: B) 33,000 ft-lb/min
Rationale: By definition, one mechanical horsepower is the amount of work required to lift
33,000 pounds one foot in one minute.
Question 6
What is the regulation corresponding to boiler, pressure vessels and refrigeration systems in New
Jersey?
A) NJSA 34:7-1
B) ASME Section I
C) New Jersey Administrative Code (NJAC) 12:90
D) OSHA 1910.119
E) NFPA 85
Correct Answer: C) New Jersey Administrative Code (NJAC) 12:90
Rationale: NJAC 12:90 is the specific state administrative code that governs the licensing of
operators and the inspection/maintenance of boilers and pressure vessels in NJ.
Question 7
According to the codes and standards adopted and incorporated by reference of the boiler
pressure vessels and refrigeration regulations, welded repairs and any alterations made to the
, 3
boilers must comply with what?
A) The preferences of the Chief Engineer
B) Local municipal building codes
C) The original Code of construction when it was built
D) Only the National Board Inspection Code (NBIC)
E) Standard plumbing practices
Correct Answer: C) The original Code of construction when it was built
Rationale: To maintain the integrity of the pressure vessel, all repairs or alterations must
adhere to the standards (such as ASME Section I) under which the boiler was originally
manufactured.
Question 8
T/F The examining board of the mechanical inspection bureau of boiler and pressure vessel
compliance may consider an applicant's experience of an equivalent amount for grade or
classification from some other jurisdictional authority (state or federal).
A) True
B) False
Correct Answer: A) True
Rationale: The NJ Mechanical Inspection Bureau has the authority to review and accept
documented experience from the military, federal government, or other states if it meets
NJ's stringent requirements.
Question 9
In your boiler plant, you have pumps used for numerous applications. One of the pumps has a
small amount of liquid coming from the packing gland. Is this normal or is it a problem?
A) It is a problem; the gland must be tightened until it stops
B) It is normal and is necessary to lubricate and cool the packing
C) It indicates the shaft is bent
D) It indicates the pump is about to fail
E) It means the packing is the wrong size
Correct Answer: B) this is normal and is necessary to lubricate and cool the packing.
Rationale: Packing glands require a small amount of leakage (drops per minute) to provide
lubrication and carry away heat generated by friction between the packing material and
the rotating shaft.
Question 10
The purpose of backseating a manual valve in an operating system is to:
A) Stop all flow through the valve
B) Isolate system pressure from the packing stuffing box to minimize packing leakage
C) Lock the valve in the open position
D) Relieve pressure from the downstream side
AND CORRECTLY WELL-DEFINED ANSWERS LATEST ALREADY GRADED A+ 2026
Question 1
In accordance with ASME CSD-1, where is the installation of a manually operated remote
shutdown switch or circuit breaker to be located?
A) Inside the boiler room next to the burner
B) In the Chief Engineer's office only
C) At the main electrical disconnect for the building
D) 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
E) Only required for boilers over 500 HP
Correct Answer: D) 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.
Rationale: ASME CSD-1 requires an emergency shutdown switch (panic button) located
outside the primary exit of the boiler room to allow operators to kill fuel and power safely
during an emergency without entering the danger zone.
Question 2
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?
A) The pump is running too fast
B) Pump cavitation issue
C) The discharge valve is fully open
D) Low voltage to the motor
E) High water level in the deaerator
Correct Answer: B) pump cavitation issue
Rationale: Cavitation occurs when the pressure at the pump inlet drops below the vapor
pressure of the water, causing bubbles to form and collapse. This results in a "marbles in a
blender" noise, vibration, and heat buildup due to friction and lack of flow.
Question 3
What is the function of a dry pipe in a boiler?
A) To supply air to the burner
B) To drain the boiler for cleaning
C) To remove moisture from the steam drum
D) To prevent the boiler from dry firing
E) To cool the flue gases
Correct Answer: C) to remove moisture from the steam drum
Rationale: A dry pipe is an internal perforated pipe located at the top of the steam space in
, 2
the drum. It acts as a separator to ensure that high-quality "dry" steam (without water
droplets) enters the main steam header.
Question 4
What is the heating surface of a water-tube with a diameter of 3 1/2 inches and a length of 20
feet?
A) 12.50 sq. ft
B) 15.25 sq. ft
C) 18.32 sq. ft
D) 21.40 sq. ft
E) 25.00 sq. ft
Correct Answer: C) 18.32 sq. ft
Rationale: Heating surface is calculated by finding the circumference (𝜋 × 𝐷) and
multiplying by length (𝐿). 3.5 inches is 0.2916 feet. 3.14159 × 0.2916 × 20 = 18.32 sq. ft.
Question 5
One mechanical horsepower is equal to:
A) 2,545 Btu/hr
B) 33,000 ft-lb/min
C) 746 Watts
D) 970.3 Btu
E) 550 ft-lb/min
Correct Answer: B) 33,000 ft-lb/min
Rationale: By definition, one mechanical horsepower is the amount of work required to lift
33,000 pounds one foot in one minute.
Question 6
What is the regulation corresponding to boiler, pressure vessels and refrigeration systems in New
Jersey?
A) NJSA 34:7-1
B) ASME Section I
C) New Jersey Administrative Code (NJAC) 12:90
D) OSHA 1910.119
E) NFPA 85
Correct Answer: C) New Jersey Administrative Code (NJAC) 12:90
Rationale: NJAC 12:90 is the specific state administrative code that governs the licensing of
operators and the inspection/maintenance of boilers and pressure vessels in NJ.
Question 7
According to the codes and standards adopted and incorporated by reference of the boiler
pressure vessels and refrigeration regulations, welded repairs and any alterations made to the
, 3
boilers must comply with what?
A) The preferences of the Chief Engineer
B) Local municipal building codes
C) The original Code of construction when it was built
D) Only the National Board Inspection Code (NBIC)
E) Standard plumbing practices
Correct Answer: C) The original Code of construction when it was built
Rationale: To maintain the integrity of the pressure vessel, all repairs or alterations must
adhere to the standards (such as ASME Section I) under which the boiler was originally
manufactured.
Question 8
T/F The examining board of the mechanical inspection bureau of boiler and pressure vessel
compliance may consider an applicant's experience of an equivalent amount for grade or
classification from some other jurisdictional authority (state or federal).
A) True
B) False
Correct Answer: A) True
Rationale: The NJ Mechanical Inspection Bureau has the authority to review and accept
documented experience from the military, federal government, or other states if it meets
NJ's stringent requirements.
Question 9
In your boiler plant, you have pumps used for numerous applications. One of the pumps has a
small amount of liquid coming from the packing gland. Is this normal or is it a problem?
A) It is a problem; the gland must be tightened until it stops
B) It is normal and is necessary to lubricate and cool the packing
C) It indicates the shaft is bent
D) It indicates the pump is about to fail
E) It means the packing is the wrong size
Correct Answer: B) this is normal and is necessary to lubricate and cool the packing.
Rationale: Packing glands require a small amount of leakage (drops per minute) to provide
lubrication and carry away heat generated by friction between the packing material and
the rotating shaft.
Question 10
The purpose of backseating a manual valve in an operating system is to:
A) Stop all flow through the valve
B) Isolate system pressure from the packing stuffing box to minimize packing leakage
C) Lock the valve in the open position
D) Relieve pressure from the downstream side
