BOILER LICENSE TEST SCRIPT 2026
QUESTIONS AND SOLUTIONS
COMPREHENSIVE STUDY SHEET FULL
PRACTICE SET 250
◉ Locked closed.before anyone enters the boiler drum, the main
steam stop valve, bottom blowdown valves, & feedwater valves
should be
◉ 212 degrees F.at atmospheric pressure, water begins to boil at
approximately
◉ Fuel oil, gas, & coal.fuels most commonly used in boilers
◉ Steam pressure gauge.must be connected to the highest part of
the steam side of the boiler
◉ Half full.with an NOWL in a boiler, the gauge glass is
approximately
◉ Foaming.a high surface tension on top of the boiler water can lead
to
,◉ Mud drum.Bottom blowdown on a boiler removes sludge &
sediment from the
◉ Tin.a boiler fusible plug is brass or bronze with a core of
◉ Pounds per square inch.a steam pressure gauge is calibrated in
◉ Try cocks.a secondary means of determining boiler water level
◉ Oily waste rag storage.fires caused by spontaneous combustion
are most likely to occur in the
◉ Steam.a siphon installed between the boiler & the pressure gauge
protects the Bourdon tube from
◉ Prevent formation of scale.boiler feedwater is chemically treated
to
◉ Inside tube surface.in a firetube boiler, soot accumulates on the
◉ 1.5 times the MAWP.the pressure applied on the boiler during a
hydrostatic test should be
, ◉ Decreased.as fuel oil is heated, its viscosity is
◉ Chimney.the induced draft fan is located between the boiler & the
◉ Flash when exposed to an open flame.the flash point of fuel oil is
the minimum temperature at which the fuel will
◉ Burn continually.the fire point of fuel oil is the minimum
temperature at which the fuel will
◉ Lowest; flow.the pour point of fuel oil is the ____ temperature at
which fuel oil will ____
◉ Dangerous to handle.fuel oil with a low flash point is
◉ Pressure control.the operating range of a steam boiler is
controlled by a
◉ Condensate in the line.water hammer in steam lines is caused by
◉ Manometer.measures the difference in pressure between 2 points,
measures draft
QUESTIONS AND SOLUTIONS
COMPREHENSIVE STUDY SHEET FULL
PRACTICE SET 250
◉ Locked closed.before anyone enters the boiler drum, the main
steam stop valve, bottom blowdown valves, & feedwater valves
should be
◉ 212 degrees F.at atmospheric pressure, water begins to boil at
approximately
◉ Fuel oil, gas, & coal.fuels most commonly used in boilers
◉ Steam pressure gauge.must be connected to the highest part of
the steam side of the boiler
◉ Half full.with an NOWL in a boiler, the gauge glass is
approximately
◉ Foaming.a high surface tension on top of the boiler water can lead
to
,◉ Mud drum.Bottom blowdown on a boiler removes sludge &
sediment from the
◉ Tin.a boiler fusible plug is brass or bronze with a core of
◉ Pounds per square inch.a steam pressure gauge is calibrated in
◉ Try cocks.a secondary means of determining boiler water level
◉ Oily waste rag storage.fires caused by spontaneous combustion
are most likely to occur in the
◉ Steam.a siphon installed between the boiler & the pressure gauge
protects the Bourdon tube from
◉ Prevent formation of scale.boiler feedwater is chemically treated
to
◉ Inside tube surface.in a firetube boiler, soot accumulates on the
◉ 1.5 times the MAWP.the pressure applied on the boiler during a
hydrostatic test should be
, ◉ Decreased.as fuel oil is heated, its viscosity is
◉ Chimney.the induced draft fan is located between the boiler & the
◉ Flash when exposed to an open flame.the flash point of fuel oil is
the minimum temperature at which the fuel will
◉ Burn continually.the fire point of fuel oil is the minimum
temperature at which the fuel will
◉ Lowest; flow.the pour point of fuel oil is the ____ temperature at
which fuel oil will ____
◉ Dangerous to handle.fuel oil with a low flash point is
◉ Pressure control.the operating range of a steam boiler is
controlled by a
◉ Condensate in the line.water hammer in steam lines is caused by
◉ Manometer.measures the difference in pressure between 2 points,
measures draft
