SPECIAL BOILER LICENSE PRACTICE EXAM
EXAM SCRIPT 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉ How many types of boilers are there? Answer: Three: Fire tube,
Water tube, Cast iron sectional
◉ What type of boiler can be made larger? Answer: Cast Iron
sectional
◉ What type of boiler has the water surrounding the tubes? Answer:
Fire tube
◉ What type of boiler has the water running through the tubes?
Answer: Water tube
◉ Boiler room log books area state of Minnesota requirement for
ever boiler room, what are some of the things you should be writing
down in the book? Answer: The log entry should start out with
today's date NEXT what you did you do in the boiler room NEXT sign
your name
◉ What is condensate? Answer: Condensed steam
,◉ A firing cycle consists of events that safely controls the burning of
a fuel. What even occur first? Answer: Safety controls must be in the
circuit.
◉ After blowing down the water column and gauge glass you are
looking for the: Answer: Water reentering the gauge glass to rise
promptly.
◉ Give an example of cold water start for a hot water boiler. Answer:
XXX
◉ Two low water fuel cut-outs are required when the BTU input of
the burner exceeds: Answer: 750,000
◉ A boiler equipped with the two low water fuel cut-outs must have
_______________ on the secondary low water fuel cut-out. Answer: A
manual reset.
◉ A boiler with a new burner OR a new boiler room must have:
Answer: A kill switch by each door leaving the boiler room.
◉ The low water fuel cut off should be tested: Answer: At least once
a day when the boiler is in operation.
,◉ What is the purpose of a check valve used in a feed water line
going to a steam boiler? Answer: To restrict the flow in one direction
only.
◉ Where would you expect to locate pyrometer? Answer: In the
exhaust gases leaving the boiler
◉ What would the pyrometer tell you? Answer: The temperature
◉ An aqua state would be used on what type of boiler? Answer: A
hot water boiler
◉ Globe valves are used when you need to: Answer: Throttle or
restrict the flow
◉ Three types of drafts are: Answer: Natural, forced, and induced.
◉ How many way can heat be transferred? Answer: Three
(Conduction -- Convection -- Radiation)
◉ How may types of low pressure are there? Answer: Three
, ◉ Boiler and boiler fitting used in the state of Minnesota must be
constructed to what code? Answer: A.S.M.E
◉ What controls the starting ans stopping of the burner by sending
the temperature of the water in a hot water boiler? Answer: Aqua
Stat
◉ When a hydrostatic test of a boiler exceeds the maximum allowed
working pressure each safety valve, if left attached to the boiler,
should: Answer: Have its valve disc held to its seat by means of
testing clamp or "gag"
◉ Heat can be transferred in three ways and they are: Answer:
Conduction --Convection - Radiation
◉ The first sequence in the series of automatic burner control is:
Answer: Purging
◉ Can a low water low water condition i a hot water heating type
boiler? Answer: Yes, for numerous reasons
◉ Other than a safety relieve valve what other safety device should
be installed on a hot water heating boiler? Answer: Low water cut
off
EXAM SCRIPT 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◉ How many types of boilers are there? Answer: Three: Fire tube,
Water tube, Cast iron sectional
◉ What type of boiler can be made larger? Answer: Cast Iron
sectional
◉ What type of boiler has the water surrounding the tubes? Answer:
Fire tube
◉ What type of boiler has the water running through the tubes?
Answer: Water tube
◉ Boiler room log books area state of Minnesota requirement for
ever boiler room, what are some of the things you should be writing
down in the book? Answer: The log entry should start out with
today's date NEXT what you did you do in the boiler room NEXT sign
your name
◉ What is condensate? Answer: Condensed steam
,◉ A firing cycle consists of events that safely controls the burning of
a fuel. What even occur first? Answer: Safety controls must be in the
circuit.
◉ After blowing down the water column and gauge glass you are
looking for the: Answer: Water reentering the gauge glass to rise
promptly.
◉ Give an example of cold water start for a hot water boiler. Answer:
XXX
◉ Two low water fuel cut-outs are required when the BTU input of
the burner exceeds: Answer: 750,000
◉ A boiler equipped with the two low water fuel cut-outs must have
_______________ on the secondary low water fuel cut-out. Answer: A
manual reset.
◉ A boiler with a new burner OR a new boiler room must have:
Answer: A kill switch by each door leaving the boiler room.
◉ The low water fuel cut off should be tested: Answer: At least once
a day when the boiler is in operation.
,◉ What is the purpose of a check valve used in a feed water line
going to a steam boiler? Answer: To restrict the flow in one direction
only.
◉ Where would you expect to locate pyrometer? Answer: In the
exhaust gases leaving the boiler
◉ What would the pyrometer tell you? Answer: The temperature
◉ An aqua state would be used on what type of boiler? Answer: A
hot water boiler
◉ Globe valves are used when you need to: Answer: Throttle or
restrict the flow
◉ Three types of drafts are: Answer: Natural, forced, and induced.
◉ How many way can heat be transferred? Answer: Three
(Conduction -- Convection -- Radiation)
◉ How may types of low pressure are there? Answer: Three
, ◉ Boiler and boiler fitting used in the state of Minnesota must be
constructed to what code? Answer: A.S.M.E
◉ What controls the starting ans stopping of the burner by sending
the temperature of the water in a hot water boiler? Answer: Aqua
Stat
◉ When a hydrostatic test of a boiler exceeds the maximum allowed
working pressure each safety valve, if left attached to the boiler,
should: Answer: Have its valve disc held to its seat by means of
testing clamp or "gag"
◉ Heat can be transferred in three ways and they are: Answer:
Conduction --Convection - Radiation
◉ The first sequence in the series of automatic burner control is:
Answer: Purging
◉ Can a low water low water condition i a hot water heating type
boiler? Answer: Yes, for numerous reasons
◉ Other than a safety relieve valve what other safety device should
be installed on a hot water heating boiler? Answer: Low water cut
off
