Boiler Operator/ Stationary Steam Engineer Exam
Questions With Complete Solutions Latest Update
2024/2025 (GRADED)
what is used to keep SO2 down? - Answer wet and dry scrubbers
a wet scrubber that has been maintained properly has the capability of absorbing
______% of the SO2 in the flue gas - Answer 90%
Materials of construction of a flue gas scrubber system must be selected to resist what
hostile conditions? - Answer low pH conditions and abrasion
the efficiency of a spray pond or cooling tower is based on? - Answer wet bulb
temperature or relative humidity of the ambient air
when placing an induced draft cooling tower into service, which is the last step
performed? - Answer start the i.d. fans
when operating an induced draft cooling tower, which of the following statements is
FALSE - Answer it is more economical to operate one fan at high speed than two fans
at low speed
what condition could be prevented by keeping the pH of water greater than 7? - Answer
corrosion
which chemical is often used to control algae accumulation in cooling towers? - Answer
copper sulfate
(LP) what is the minimum percentage of oxygen that must be present in a confined
space before entering? - Answer 19.5%
(LP) which of the following should you not tag and lock out when a boiler is shut down
for inspection? - Answer top tri cock or boiler vent
what is the first thing that must be done when starting up a brand new boiler? - Answer
boil the boiler out
which of the following is not done during a boiler start up? - Answer fill the boiler to the
NOWL
when starting a fire in a coal_fired boiler with chain grates or traveling grates, how much
coal should be on the grates? - Answer 3-4 inches
, when should a non-return valve be opened when putting a boiler on line? - Answer
when the boiler pressure builds to 10 to 25 pose below the header pressure
if a steam oiler is being taken out of service, what step should be taken first? - Answer
operate the sootblowers
(LP) when taking a boiler off-line what is the first step? - Answer secure the fire
what is the last step to be performed when shutting down a boiler? - Answer close the
feedwater supply valve
when taking a boiler out of service, what is one thing you do not do? - Answer close the
vent
how long may the operator be away from the boiler - Answer the time it takes to go from
1/2 sight glass of water to no water showing
how long does it usually take for the boiler water level to go from half a glass to no
water showing? - Answer 2-8 min
how often should the flame scanner be tested? - Answer weekly
(LP) when testing a safety valve manually on a low-pressure boiler, how long do you
hold it open? - Answer 5-10 seconds
with a tubular gauge glass, how do you warm up the glass - Answer open the drain
valve and crack open the steam valve
bad washers in a low pressure boiler's gauge glass - Answer can cause a false water
level reading in the gauge glass
what can you do to find the water level if the gauge glass is broken - Answer open the tri
cocks individually
if a priming situation occurs, what should you do? - Answer reduce the firing rate and
blow the boiler down to gain control of the water level
if the boiler is priming so badly that you cannot see the water level, what action should
be taken? - Answer close the main steam stop valve long enough to determine the
water level
the water level in a steam boiler has been proven to be low. what step should be taken
first? - Answer stop the fuel and air suppies
Questions With Complete Solutions Latest Update
2024/2025 (GRADED)
what is used to keep SO2 down? - Answer wet and dry scrubbers
a wet scrubber that has been maintained properly has the capability of absorbing
______% of the SO2 in the flue gas - Answer 90%
Materials of construction of a flue gas scrubber system must be selected to resist what
hostile conditions? - Answer low pH conditions and abrasion
the efficiency of a spray pond or cooling tower is based on? - Answer wet bulb
temperature or relative humidity of the ambient air
when placing an induced draft cooling tower into service, which is the last step
performed? - Answer start the i.d. fans
when operating an induced draft cooling tower, which of the following statements is
FALSE - Answer it is more economical to operate one fan at high speed than two fans
at low speed
what condition could be prevented by keeping the pH of water greater than 7? - Answer
corrosion
which chemical is often used to control algae accumulation in cooling towers? - Answer
copper sulfate
(LP) what is the minimum percentage of oxygen that must be present in a confined
space before entering? - Answer 19.5%
(LP) which of the following should you not tag and lock out when a boiler is shut down
for inspection? - Answer top tri cock or boiler vent
what is the first thing that must be done when starting up a brand new boiler? - Answer
boil the boiler out
which of the following is not done during a boiler start up? - Answer fill the boiler to the
NOWL
when starting a fire in a coal_fired boiler with chain grates or traveling grates, how much
coal should be on the grates? - Answer 3-4 inches
, when should a non-return valve be opened when putting a boiler on line? - Answer
when the boiler pressure builds to 10 to 25 pose below the header pressure
if a steam oiler is being taken out of service, what step should be taken first? - Answer
operate the sootblowers
(LP) when taking a boiler off-line what is the first step? - Answer secure the fire
what is the last step to be performed when shutting down a boiler? - Answer close the
feedwater supply valve
when taking a boiler out of service, what is one thing you do not do? - Answer close the
vent
how long may the operator be away from the boiler - Answer the time it takes to go from
1/2 sight glass of water to no water showing
how long does it usually take for the boiler water level to go from half a glass to no
water showing? - Answer 2-8 min
how often should the flame scanner be tested? - Answer weekly
(LP) when testing a safety valve manually on a low-pressure boiler, how long do you
hold it open? - Answer 5-10 seconds
with a tubular gauge glass, how do you warm up the glass - Answer open the drain
valve and crack open the steam valve
bad washers in a low pressure boiler's gauge glass - Answer can cause a false water
level reading in the gauge glass
what can you do to find the water level if the gauge glass is broken - Answer open the tri
cocks individually
if a priming situation occurs, what should you do? - Answer reduce the firing rate and
blow the boiler down to gain control of the water level
if the boiler is priming so badly that you cannot see the water level, what action should
be taken? - Answer close the main steam stop valve long enough to determine the
water level
the water level in a steam boiler has been proven to be low. what step should be taken
first? - Answer stop the fuel and air suppies
