Maryland Boiler License Latest Edition
2025-2026. Questions & Correct
Answers. Graded A
_____________is the accumulation of minerals such as calcium and
magnesium on boiler heating surfaces. – ANS Scale
A __________blowdown is performed to remove sludge from the boiler. -
ANSbottom
A __________receives a signal representing a variable, such as
temperature, pressure, or flow, and converts that signal into an electrical or
digital signal that is compatible with a digital control system. -
ANStransducer
A _________prevents the flow of boiler water back to the city water supply.
- ANSbackflow preventer
A boiler has quick- and slow-opening blowdown valves. The sequence
used for blowdown is - ANSopen quick-opening, open slow-opening, close
slow-opening, close quick-opening
A boiler that is priming has - ANSwater carried over with the steam
1
, A compound gauge is a pressure gauge that indicates - ANSvacuum in
inches of mercury or pressure in psi on the same gauge
A fan located between the breeching and the stack is a(n) - ANSinduced
draft fan
A feedwater pump can become steambound from - ANSfeedwater
temperature too high
A low water condition requires ___________ immediately. - ANSsecuring
fuel to the burner
A main steam stop valve would most likely be a(n) - ANSos&y gate valve
A pH level of 7.0 is an indication that the boiler water is - ANSneutral,
neither basic or acidic
A positive pressure before the furnace indicates __________draft. -
ANSforced
A therm is equivalent to________ Btu - ANS100,000
A(n) ________draft fan is located before the furnace. - ANSforced
As the steam pressure increases in a boiler, there is a corresponding
increase in the - ANSboiling temperature of the water in the boiler
2
2025-2026. Questions & Correct
Answers. Graded A
_____________is the accumulation of minerals such as calcium and
magnesium on boiler heating surfaces. – ANS Scale
A __________blowdown is performed to remove sludge from the boiler. -
ANSbottom
A __________receives a signal representing a variable, such as
temperature, pressure, or flow, and converts that signal into an electrical or
digital signal that is compatible with a digital control system. -
ANStransducer
A _________prevents the flow of boiler water back to the city water supply.
- ANSbackflow preventer
A boiler has quick- and slow-opening blowdown valves. The sequence
used for blowdown is - ANSopen quick-opening, open slow-opening, close
slow-opening, close quick-opening
A boiler that is priming has - ANSwater carried over with the steam
1
, A compound gauge is a pressure gauge that indicates - ANSvacuum in
inches of mercury or pressure in psi on the same gauge
A fan located between the breeching and the stack is a(n) - ANSinduced
draft fan
A feedwater pump can become steambound from - ANSfeedwater
temperature too high
A low water condition requires ___________ immediately. - ANSsecuring
fuel to the burner
A main steam stop valve would most likely be a(n) - ANSos&y gate valve
A pH level of 7.0 is an indication that the boiler water is - ANSneutral,
neither basic or acidic
A positive pressure before the furnace indicates __________draft. -
ANSforced
A therm is equivalent to________ Btu - ANS100,000
A(n) ________draft fan is located before the furnace. - ANSforced
As the steam pressure increases in a boiler, there is a corresponding
increase in the - ANSboiling temperature of the water in the boiler
2
