STATIONARY ENGINEER FINAL
CERTIFICATION SCRIPT 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◍ Effect of 4,025 BTU's of sulfur.
Answer: Would hurt air heaters
◍ Where in the NJ Administrative Code (NJAC) are the duties of licensed
persons established?.
Answer: N.J.A.C. 12:90-3.10
◍ What is the rpm of a single-acting compressor, if the stroke is 8 inches and
the piston speed is 400 feet per minute?.
Answer: 300 rpm
◍ If power is supplied to a circuit at 440 V, and the current drawn is 100
A. The current doing the actual work is 80
A. What is the apparent power?.
Answer: 24 kVA
◍ BTUs and CFMs in Combustion Air.
Answer: 1 CFM per 2,400 BTUs.
◍ As an operator it is imperative that you fully understand pumps. Assuming
you understanding the acronym NPSH, what does it mean?.
Answer: The total suction head in feet of liquid (absolute at the pump
centerline or impeller eye) less the absolute vapor pressure (in feet) of the
liquid being pumped.
◍ An operator attempts to close a fully-open upright manual gate valve to
isolate a pump in a cooling water system that has been cooled down or
maintenance. However, the operator is unable to rotate the hand wheel in the
, close direction. Which of the following could cause the condition?.
Answer: The valve disk has jammed against its baskseat by the difference in
the thermal contraction of the stem and the bonnet.
◍ What protects the boiler from expansion and contraction of steam mains.
Answer: ANCHORAGE
◍ By
N. J.
A. C. 12:90, a person holding a 1-C license, my act as a chief engineer of
what type and capacity plant?.
Answer: A high-pressure plant of 1,000 BHP, A loss-pressure plant of 500
BHP, A low-pressure plant of 1250 BHP (All of the Above)
◍ In order to perform an alteration of your boiler or pressure vessel, what
stamp must the Chief Engineer ensure the repair company maintains?.
Answer: National Board R Stamp
◍ Who cannot conduct gas piping system inspections.
Answer: Insurance Agency
◍ Who can witness gas piping tests.
Answer: Registered Architect, licensed P.E
◍ BTU content of natural gas.
Answer: Between 950 and 1050
◍ By ASME code, the size of the water column connections to a boiler must
be a minimum of:.
Answer: 1 inch
◍ Boiler pH.
Answer: The pH should be between 7-9 (8.5). Acid attack pH below 8.5,
caustic attack above 12.9.
◍ What is the device shown below that is an essential component in a specific
type of boiler plant system. Without it, a system wouldn't be able to have
good condensate management and when properly utilized releases
, condensate and incondensible gases as needed. Identify the correct type and
the boiler system in which it is utilized..
Answer: Thermostatic trap used in a power boiler plant.
◍ Selection of the proper pump for a given application will depend on what is
being used for and includes consideration of which of the following? Which
of the answers is correctly stated?.
Answer: The type of liquid you wish to pump, distance you wish to move
the liquid and the volume you need to move over a specific time frame.
◍ After a welded repair is done to your boiler you must request for:.
Answer: Form R-1
◍ Standard Non-Mercury Gauge Label.
Answer: Name of manufacturer.
◍ Tubes Material.
Answer: Austenitic Steel.
◍ In centrifugal pump operation, in order to obtain satisfactory operating
conditions, which of the following statements must be true?.
Answer: The NPSHa must be greater than the NPSHr
◍ You are working in a plant and are in charge of the boiler plant. Your
company purchases equipment for use in the boiler room. Whether it is a
boiler or pressure vessel, the item must be constructed in accordance with all
applicable rules of the ASME Code. If this is true, how is it identified as
meeting the ASME requirements?.
Answer: The offical ASME Code Symbol stamp can be affixed
◍ In building complexes that cover large areas, such as shopping centers,
schools, and factories, the resistance to flow of the condensate in the return
piping is high. What piece of equipment would be used to reduce this
resistance and improve flow as well as act as a pump?.
Answer: In a steam heating plant, a vacuum pump would be used to assist in
the condensate flow as alternative to using higher steam pressures in steam
supply line.
CERTIFICATION SCRIPT 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◍ Effect of 4,025 BTU's of sulfur.
Answer: Would hurt air heaters
◍ Where in the NJ Administrative Code (NJAC) are the duties of licensed
persons established?.
Answer: N.J.A.C. 12:90-3.10
◍ What is the rpm of a single-acting compressor, if the stroke is 8 inches and
the piston speed is 400 feet per minute?.
Answer: 300 rpm
◍ If power is supplied to a circuit at 440 V, and the current drawn is 100
A. The current doing the actual work is 80
A. What is the apparent power?.
Answer: 24 kVA
◍ BTUs and CFMs in Combustion Air.
Answer: 1 CFM per 2,400 BTUs.
◍ As an operator it is imperative that you fully understand pumps. Assuming
you understanding the acronym NPSH, what does it mean?.
Answer: The total suction head in feet of liquid (absolute at the pump
centerline or impeller eye) less the absolute vapor pressure (in feet) of the
liquid being pumped.
◍ An operator attempts to close a fully-open upright manual gate valve to
isolate a pump in a cooling water system that has been cooled down or
maintenance. However, the operator is unable to rotate the hand wheel in the
, close direction. Which of the following could cause the condition?.
Answer: The valve disk has jammed against its baskseat by the difference in
the thermal contraction of the stem and the bonnet.
◍ What protects the boiler from expansion and contraction of steam mains.
Answer: ANCHORAGE
◍ By
N. J.
A. C. 12:90, a person holding a 1-C license, my act as a chief engineer of
what type and capacity plant?.
Answer: A high-pressure plant of 1,000 BHP, A loss-pressure plant of 500
BHP, A low-pressure plant of 1250 BHP (All of the Above)
◍ In order to perform an alteration of your boiler or pressure vessel, what
stamp must the Chief Engineer ensure the repair company maintains?.
Answer: National Board R Stamp
◍ Who cannot conduct gas piping system inspections.
Answer: Insurance Agency
◍ Who can witness gas piping tests.
Answer: Registered Architect, licensed P.E
◍ BTU content of natural gas.
Answer: Between 950 and 1050
◍ By ASME code, the size of the water column connections to a boiler must
be a minimum of:.
Answer: 1 inch
◍ Boiler pH.
Answer: The pH should be between 7-9 (8.5). Acid attack pH below 8.5,
caustic attack above 12.9.
◍ What is the device shown below that is an essential component in a specific
type of boiler plant system. Without it, a system wouldn't be able to have
good condensate management and when properly utilized releases
, condensate and incondensible gases as needed. Identify the correct type and
the boiler system in which it is utilized..
Answer: Thermostatic trap used in a power boiler plant.
◍ Selection of the proper pump for a given application will depend on what is
being used for and includes consideration of which of the following? Which
of the answers is correctly stated?.
Answer: The type of liquid you wish to pump, distance you wish to move
the liquid and the volume you need to move over a specific time frame.
◍ After a welded repair is done to your boiler you must request for:.
Answer: Form R-1
◍ Standard Non-Mercury Gauge Label.
Answer: Name of manufacturer.
◍ Tubes Material.
Answer: Austenitic Steel.
◍ In centrifugal pump operation, in order to obtain satisfactory operating
conditions, which of the following statements must be true?.
Answer: The NPSHa must be greater than the NPSHr
◍ You are working in a plant and are in charge of the boiler plant. Your
company purchases equipment for use in the boiler room. Whether it is a
boiler or pressure vessel, the item must be constructed in accordance with all
applicable rules of the ASME Code. If this is true, how is it identified as
meeting the ASME requirements?.
Answer: The offical ASME Code Symbol stamp can be affixed
◍ In building complexes that cover large areas, such as shopping centers,
schools, and factories, the resistance to flow of the condensate in the return
piping is high. What piece of equipment would be used to reduce this
resistance and improve flow as well as act as a pump?.
Answer: In a steam heating plant, a vacuum pump would be used to assist in
the condensate flow as alternative to using higher steam pressures in steam
supply line.
