3rd class stationary steam engineer license EXAM
2026-2027 LATEST VERSION QUESTIONS AND
VERIFIED CORRECT ANSWERS JUST RELEASED
during a boiler inspection, the main steam stop valves are _______ -
answer>>>closed, locked, and tagged
when a quick opening valve is used as a blowdown valve, it is located ______
- answer>>>between the boiler and slow opening valve
listing lovers on safety valves are used to_____ - answer>>>manually test
valves
the frequency of performing a bottom blowdown is determined by ______ -
answer>>>boiler Water Analysis
normally a water column and gauge glass should be blown down _____ -
answer>>>at the start of a shift in whenever and out of the water level
a thermostatic trap opens when the____ - answer>>>the Bellows contract
an economizer located in the path of the gases of combustion increased
boiler efficiency approximately 1% for each ___°f rise in feed water
temperature - answer>>>10
the purpose of a vent on the open feedwater heater is to _____ -
answer>>>remove oxygen and non condensable gases
steam pressure gauges are calibrated in____ - answer>>>pounds per square
inch
bottom blowdown lines are located______ - answer>>>at the lowest part of
the water side of the boiler
,sewer lines are protected from pressure and temperature by the _______
when blowing down a boiler - answer>>>blowdown tank
the upper connection to a gauge glasses closed. If the boiler has a normal
water level, the level on the gauge glass will show _______ glass -
answer>>>full
combustion controls on a boiler are used to _____ - answer>>>control the
air fuel ratio
ceiling strips that warned of excessive radial tolerance are found on_____ -
answer>>>steam turbines
pre-purge, air to fuel ratio, and post Purge of the burner are functions of the
_______ - answer>>>combustion controls
a water column______ - answer>>>reduces fluctuations of water in the
gauge glass
the low water fuel cutoff can be tested by _____ - answer>>>allowing the
water level to drop
boilers that are equipped with air heaters and economizers usually
have_____ draft fans - answer>>>forced and induced
baffles are used in the Steam and water drum of water tube boilers to _____
- answer>>>prevent water carry over with the steam
a closed feedwater heater is always installed_______ - answer>>>on the
discharge side of the feed water pump
the purpose of a burner pressure control is to _____ - answer>>>start and
stop the burner firing cycle
, a gas pressure regulator is used to control the ______ - answer>>>gas
pressure at the burner
if the chimney temperature is 250 degrees Fahrenheit higher than the Steam
and water temperature, the boiler is _______ - answer>>>not operating
efficiently
the most controllable heat loss in a boiler is from the loss of heat in______ -
answer>>>gases of combustion
on the feed water line, the valve closest to the boiler shell is a _____ valve -
answer>>>stop
four basic systems found on boilers are ______< - answer>>>steam, feed
water, fuel, and draft
if a low-water condition occurs, the operator should first _______ -
answer>>>secure the burners
a pressure control on a boiler is used to. _______ - answer>>>control the
operating range of the boiler
sup blowers are most commonly found ______ - answer>>>on water tube
boilers
a duplex reciprocating feed water pump operates on the principle that the
_______ - answer>>>steam piston area must be 2 to 2 1/2 times larger than
the water piston
when testing the safety valve by hand, it is the accepted practice to have.
_________ - answer>>>at least 75% popping pressure before testing
oxygen in a boiler drum causes. ________ - answer>>>pitting
2026-2027 LATEST VERSION QUESTIONS AND
VERIFIED CORRECT ANSWERS JUST RELEASED
during a boiler inspection, the main steam stop valves are _______ -
answer>>>closed, locked, and tagged
when a quick opening valve is used as a blowdown valve, it is located ______
- answer>>>between the boiler and slow opening valve
listing lovers on safety valves are used to_____ - answer>>>manually test
valves
the frequency of performing a bottom blowdown is determined by ______ -
answer>>>boiler Water Analysis
normally a water column and gauge glass should be blown down _____ -
answer>>>at the start of a shift in whenever and out of the water level
a thermostatic trap opens when the____ - answer>>>the Bellows contract
an economizer located in the path of the gases of combustion increased
boiler efficiency approximately 1% for each ___°f rise in feed water
temperature - answer>>>10
the purpose of a vent on the open feedwater heater is to _____ -
answer>>>remove oxygen and non condensable gases
steam pressure gauges are calibrated in____ - answer>>>pounds per square
inch
bottom blowdown lines are located______ - answer>>>at the lowest part of
the water side of the boiler
,sewer lines are protected from pressure and temperature by the _______
when blowing down a boiler - answer>>>blowdown tank
the upper connection to a gauge glasses closed. If the boiler has a normal
water level, the level on the gauge glass will show _______ glass -
answer>>>full
combustion controls on a boiler are used to _____ - answer>>>control the
air fuel ratio
ceiling strips that warned of excessive radial tolerance are found on_____ -
answer>>>steam turbines
pre-purge, air to fuel ratio, and post Purge of the burner are functions of the
_______ - answer>>>combustion controls
a water column______ - answer>>>reduces fluctuations of water in the
gauge glass
the low water fuel cutoff can be tested by _____ - answer>>>allowing the
water level to drop
boilers that are equipped with air heaters and economizers usually
have_____ draft fans - answer>>>forced and induced
baffles are used in the Steam and water drum of water tube boilers to _____
- answer>>>prevent water carry over with the steam
a closed feedwater heater is always installed_______ - answer>>>on the
discharge side of the feed water pump
the purpose of a burner pressure control is to _____ - answer>>>start and
stop the burner firing cycle
, a gas pressure regulator is used to control the ______ - answer>>>gas
pressure at the burner
if the chimney temperature is 250 degrees Fahrenheit higher than the Steam
and water temperature, the boiler is _______ - answer>>>not operating
efficiently
the most controllable heat loss in a boiler is from the loss of heat in______ -
answer>>>gases of combustion
on the feed water line, the valve closest to the boiler shell is a _____ valve -
answer>>>stop
four basic systems found on boilers are ______< - answer>>>steam, feed
water, fuel, and draft
if a low-water condition occurs, the operator should first _______ -
answer>>>secure the burners
a pressure control on a boiler is used to. _______ - answer>>>control the
operating range of the boiler
sup blowers are most commonly found ______ - answer>>>on water tube
boilers
a duplex reciprocating feed water pump operates on the principle that the
_______ - answer>>>steam piston area must be 2 to 2 1/2 times larger than
the water piston
when testing the safety valve by hand, it is the accepted practice to have.
_________ - answer>>>at least 75% popping pressure before testing
oxygen in a boiler drum causes. ________ - answer>>>pitting
