MN BOILER LICENSE 2025 EXAM
QUESTIONS AND ANSWERS ALL
CORREC T
What grade license must the shift operator have where a chief engineer has charge of a
plant of 500 BHP? - Answer-2nd Class
An engineer with one year of actual boiler operating experience verified by affidavit
would be allowed to take an exam for - Answer-2nd Class
An engineer having an engineer license, with 3 years actual boiler operating experience
verified by one or more affidavits would be allowed to take an exam for? - Answer-1st
Class
What is meant by high pressure boiler? - Answer-Steam or other vapor in excess of 15
PSIG or a water or other liquid boiler in which the pressure exceeds 160 PSIG or a
temperature of 250 F
What would a special engineer's license allow you to operate? - Answer-High and Low
pressure boilers and their appurtenances of not more than 50 HP
A shift engineer in a high-pressure, high-temperature hot water plant of 500 BHP must
have a? - Answer-2nd class Grade A or B
What does NBIC stand for? - Answer-National Board Inspection Code
What is the definition of Operation? - Answer-on site act of manipulating, monitoring,
and testing of boilers and their appurtenances by a properly licensed engineer or an
apprentice under the direct supervision of the properly licensed engineer
What does remote monitoring mean? - Answer-act of viewing or overseeing the boiler or
plant operating parameters or conditions from a remote location
What does repair mean? - Answer-work necessary to restore a boiler or pressure vessel
to a safe and satisfactory working condition
What is the definition of a state boiler inspector? - Answer-national board commissioned
boiler inspector current chief grade A license
,When the boiler heating surface cannot be discerned, the Bhp shall be determined by
dividing the BTU input by __ - Answer-67,000
IAW the statutes of the State of Mn, each electric Bhp is equal to __ KW - Answer-10
A logbook must be maintained in the boiler room by the __ - Answer-Chief Engineer or
the operating engineer designee
The shift engineer of a high pressure boiler plant of over 200 hp must stay within __ of
the boiler room at all times during the shift - Answer-500 ft
A high pressure boiler must have two means of feedwater supply if it exceeds __ hp -
Answer-50
When used, a quick-opening blowdown valve must be located - Answer-nearest the
boiler
The minimum passing score for a Mn engineer's license exam is __ % - Answer-70
Licenses granted must be displayed in - Answer-A conspicuous place in the engine or
boiler room
For the purpose of the boiler and pressure vessels statutes, "a year" is considered to be
at least __ hrs - Answer-2000
Sensible heat is - Answer-Able to cause a change in temperature
Heat that brings about a change of state without causing a change in temperature is -
Answer-Called latent heat
In a boiler, heat is transferred from the burning fuel to the water by - Answer-
Convection, conduction, radiation
Convection is a method of heat transfer where the movement of the fluids is due solely
to the - Answer-Flow of fluids
Large high pressure utility boilers use - Answer-Balanced draft
When heat transfer occurs by travelling through metal, it is known as - Answer-
conduction
An example of the transfer of heat by radiation is - Answer-The heating effect of the sun
on the earth
The document governing boiler fittings and valves is the__ code - Answer-ASME
(American Society of Mechanical Engineers)
, The best method of testing a low-water fuel cutoff (LWCO) is to - Answer-Lower the
water level in the boiler to the level where the burner should cut out
Rules governing the construction of power boilers are set out in - Answer-ASME Code
Section I
A way to determine if a safety valve on a boiler has sufficient capacity is to - Answer-
Check with the ASME Code
An example of a non destructive test on a boiler is a __ test - Answer-tensile
The material used most frequently for piping is - Answer-Stainless steel
In a natural draft furnace, the amount of draft is affected by the - Answer-Height of the
stack
A check valve is a valve that - Answer-Allows flow in one direction only
Expansion bends or joints are installed in piping systems to - Answer-Allow for
expansion and contraction of the piping without causing damage
What is the maximum boiler horsepower you may take charge of on a chief engineer's
license? - Answer-Unlimited
A 1st class engineer may take charge of a boiler plant not to exceed - Answer-500
Boiler HorsePower
If you were to fail a chief engineer's exam, how long must you wait before you would be
allowed to take the test again - Answer-30 Days
What should be displayed in the boiler room? - Answer-Engineer's License and
Exemption or inspection certificates
A 2nd class engineer may take complete charge of a boiler plant not to exceed...? -
Answer-100 Boiler Horse Power
T/F When determining what engineers license will be needed, the total horsepower
connected to the common header is used - Answer-True
In a boiler plant where there are two 250 horsepower boilers using heating surface
connected to the same common header, what engineer's license would be required? -
Answer-1st Class Engineer
What shift engineer's license would be required for two 250 HP boilers using heating
surface connected to the same common header - Answer-1st Class
QUESTIONS AND ANSWERS ALL
CORREC T
What grade license must the shift operator have where a chief engineer has charge of a
plant of 500 BHP? - Answer-2nd Class
An engineer with one year of actual boiler operating experience verified by affidavit
would be allowed to take an exam for - Answer-2nd Class
An engineer having an engineer license, with 3 years actual boiler operating experience
verified by one or more affidavits would be allowed to take an exam for? - Answer-1st
Class
What is meant by high pressure boiler? - Answer-Steam or other vapor in excess of 15
PSIG or a water or other liquid boiler in which the pressure exceeds 160 PSIG or a
temperature of 250 F
What would a special engineer's license allow you to operate? - Answer-High and Low
pressure boilers and their appurtenances of not more than 50 HP
A shift engineer in a high-pressure, high-temperature hot water plant of 500 BHP must
have a? - Answer-2nd class Grade A or B
What does NBIC stand for? - Answer-National Board Inspection Code
What is the definition of Operation? - Answer-on site act of manipulating, monitoring,
and testing of boilers and their appurtenances by a properly licensed engineer or an
apprentice under the direct supervision of the properly licensed engineer
What does remote monitoring mean? - Answer-act of viewing or overseeing the boiler or
plant operating parameters or conditions from a remote location
What does repair mean? - Answer-work necessary to restore a boiler or pressure vessel
to a safe and satisfactory working condition
What is the definition of a state boiler inspector? - Answer-national board commissioned
boiler inspector current chief grade A license
,When the boiler heating surface cannot be discerned, the Bhp shall be determined by
dividing the BTU input by __ - Answer-67,000
IAW the statutes of the State of Mn, each electric Bhp is equal to __ KW - Answer-10
A logbook must be maintained in the boiler room by the __ - Answer-Chief Engineer or
the operating engineer designee
The shift engineer of a high pressure boiler plant of over 200 hp must stay within __ of
the boiler room at all times during the shift - Answer-500 ft
A high pressure boiler must have two means of feedwater supply if it exceeds __ hp -
Answer-50
When used, a quick-opening blowdown valve must be located - Answer-nearest the
boiler
The minimum passing score for a Mn engineer's license exam is __ % - Answer-70
Licenses granted must be displayed in - Answer-A conspicuous place in the engine or
boiler room
For the purpose of the boiler and pressure vessels statutes, "a year" is considered to be
at least __ hrs - Answer-2000
Sensible heat is - Answer-Able to cause a change in temperature
Heat that brings about a change of state without causing a change in temperature is -
Answer-Called latent heat
In a boiler, heat is transferred from the burning fuel to the water by - Answer-
Convection, conduction, radiation
Convection is a method of heat transfer where the movement of the fluids is due solely
to the - Answer-Flow of fluids
Large high pressure utility boilers use - Answer-Balanced draft
When heat transfer occurs by travelling through metal, it is known as - Answer-
conduction
An example of the transfer of heat by radiation is - Answer-The heating effect of the sun
on the earth
The document governing boiler fittings and valves is the__ code - Answer-ASME
(American Society of Mechanical Engineers)
, The best method of testing a low-water fuel cutoff (LWCO) is to - Answer-Lower the
water level in the boiler to the level where the burner should cut out
Rules governing the construction of power boilers are set out in - Answer-ASME Code
Section I
A way to determine if a safety valve on a boiler has sufficient capacity is to - Answer-
Check with the ASME Code
An example of a non destructive test on a boiler is a __ test - Answer-tensile
The material used most frequently for piping is - Answer-Stainless steel
In a natural draft furnace, the amount of draft is affected by the - Answer-Height of the
stack
A check valve is a valve that - Answer-Allows flow in one direction only
Expansion bends or joints are installed in piping systems to - Answer-Allow for
expansion and contraction of the piping without causing damage
What is the maximum boiler horsepower you may take charge of on a chief engineer's
license? - Answer-Unlimited
A 1st class engineer may take charge of a boiler plant not to exceed - Answer-500
Boiler HorsePower
If you were to fail a chief engineer's exam, how long must you wait before you would be
allowed to take the test again - Answer-30 Days
What should be displayed in the boiler room? - Answer-Engineer's License and
Exemption or inspection certificates
A 2nd class engineer may take complete charge of a boiler plant not to exceed...? -
Answer-100 Boiler Horse Power
T/F When determining what engineers license will be needed, the total horsepower
connected to the common header is used - Answer-True
In a boiler plant where there are two 250 horsepower boilers using heating surface
connected to the same common header, what engineer's license would be required? -
Answer-1st Class Engineer
What shift engineer's license would be required for two 250 HP boilers using heating
surface connected to the same common header - Answer-1st Class
