1
Boiler Operator/ Stationary Steam
Engineer Exam Latest 2025 Edition.
Questions & Correct Answers. Graded A
(LP) what is the minimum percentage of oxygen that must be present in a
confined space before entering? - ANS19.5%
(LP) when taking a boiler off-line what is the first step? - ANSsecure the fire
(LP) when testing a safety valve manually on a low-pressure boiler, how
long do you hold it open? - ANS5-10 seconds
(LP) which of the following should you not tag and lock out when a boiler is
shut down for inspection? - ANStop tri cock or boiler vent
a steam turbine that operates at 500 psi is considered - ANShigh pressure (
150 psi and less is low pressure, 151-400 is medium pressure, over 400 is
high pressure)
a wet scrubber that has been maintained properly has the capability of
absorbing ______% of the SO2 in the flue gas - ANS90%
an impulse turbine utilizes one row of stationary nozzle which increase the
velocity of the steam enough to drive two rows of rotating blades. this type
of turbine is called a(n) - ANSvelicoty-compounded turbine
1
, 2
bad washers in a low pressure boiler's gauge glass - ANScan cause a false
water level reading in the gauge glass
considering the limitation on material of construction of a steam turbine,
what is the maximum temp of steam that may be used? - ANS1100F
give a reason why the state can not take away your boiler operator license.
- ANSpoor health
how long does it usually take for the boiler water level to go from half a
glass to no water showing? - ANS2-8 min
how long may the operator be away from the boiler - ANSthe time it takes
to go from 1/2 sight glass of water to no water showing
how often should the flame scanner be tested? - ANSweekly
if a priming situation occurs, what should you do? - ANSreduce the firing
rate and blow the boiler down to gain control of the water level
if a steam oiler is being taken out of service, what step should be taken
first? - ANSoperate the sootblowers
if a turbine has begin spinning and heat is being generated in the bearings
at what temp should you add cooling water to the bearings? - ANS110-
120F
2
Boiler Operator/ Stationary Steam
Engineer Exam Latest 2025 Edition.
Questions & Correct Answers. Graded A
(LP) what is the minimum percentage of oxygen that must be present in a
confined space before entering? - ANS19.5%
(LP) when taking a boiler off-line what is the first step? - ANSsecure the fire
(LP) when testing a safety valve manually on a low-pressure boiler, how
long do you hold it open? - ANS5-10 seconds
(LP) which of the following should you not tag and lock out when a boiler is
shut down for inspection? - ANStop tri cock or boiler vent
a steam turbine that operates at 500 psi is considered - ANShigh pressure (
150 psi and less is low pressure, 151-400 is medium pressure, over 400 is
high pressure)
a wet scrubber that has been maintained properly has the capability of
absorbing ______% of the SO2 in the flue gas - ANS90%
an impulse turbine utilizes one row of stationary nozzle which increase the
velocity of the steam enough to drive two rows of rotating blades. this type
of turbine is called a(n) - ANSvelicoty-compounded turbine
1
, 2
bad washers in a low pressure boiler's gauge glass - ANScan cause a false
water level reading in the gauge glass
considering the limitation on material of construction of a steam turbine,
what is the maximum temp of steam that may be used? - ANS1100F
give a reason why the state can not take away your boiler operator license.
- ANSpoor health
how long does it usually take for the boiler water level to go from half a
glass to no water showing? - ANS2-8 min
how long may the operator be away from the boiler - ANSthe time it takes
to go from 1/2 sight glass of water to no water showing
how often should the flame scanner be tested? - ANSweekly
if a priming situation occurs, what should you do? - ANSreduce the firing
rate and blow the boiler down to gain control of the water level
if a steam oiler is being taken out of service, what step should be taken
first? - ANSoperate the sootblowers
if a turbine has begin spinning and heat is being generated in the bearings
at what temp should you add cooling water to the bearings? - ANS110-
120F
2
