Page 1 of 31
FIRST CLASS STEAM LICENSE 2026 EXAM
COMPLETE (161) CURRENT TESTING
QUESTIONS AND DETAILED CORRECT
ANSWERS|GUARANTEED PASS.
STEAM LICENSE
Ace your preparation with this First Class Steam License exam,
designed to assess advanced knowledge of steam plant
operations and high-pressure boiler systems. It focuses on
system control, safety procedures, maintenance practices, and
regulatory compliance required for first-class licensing. Suitable
for stationary engineer certification candidates and power plant
professionals.
An ion-exchange softener uses a resin bed to exchange ___
with ions that cause hardness in order to soften raw water
✓ ✓ ...... ANSWER ....... sodium
Alkalinity in boiler water is normally measured using a ___ ✓
✓ ...... ANSWER ....... titration test
, Page 2 of 31
One reason to perform a bottom blowdown is to ___ ✓ ✓
...... ANSWER ....... remove sludge from the bottom of the
boiler
An ___ is generally added to the boiler water to protect the
condensate lines from carbonic acid ✓ ✓ ...... ANSWER
....... amine
A disadvantage of a timer-controlled blowdown is that it
does not ___ ✓ ✓ ...... ANSWER ....... consider changes to
the feedwater
A bottom blowdown should be performed at least once
every ___ ✓ ✓ ...... ANSWER ....... day
A ___ is a feedwater heater that separates oxygen and other
gases from the steam before releasing the gases into the
atmosphere ✓ ✓ ...... ANSWER ....... deaerator
___ is the rapid fluctuation of the water level that occurs
when steam bubbles are trapped below a film of impurities
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on the surface of the boiler water ✓ ✓ ...... ANSWER .......
Foaming
The primary function of a combustion control system is to
regulate the ___ in a boiler ✓ ✓ ...... ANSWER ....... fuel
supply,
air supply and
draft
ON/OFF control is used to start and stop a burner ___ ✓ ✓
...... ANSWER ....... without modulating the flame to
match the steam load
A siphon is used to protect an operating pressure control
from ___ ✓ ✓ ...... ANSWER ....... live steam
an operating pressure control must be connected to the ___
✓ ✓ ...... ANSWER ....... highest part of the steam side of
the boiler
, Page 4 of 31
the two settings found on the boiler operating pressure
control are used to ___ ✓ ✓ ...... ANSWER ....... set the
operating steam pressure range of the boiler
the combustion blower continues to run after fuel is shut off
to the burner during ___ ✓ ✓ ...... ANSWER .......
postpurging
the programmer in an ONn/OFF control system is used to
___ ✓ ✓ ...... ANSWER ....... control the burner firing cycle
to eliminate the danger of a furnace explosion during start-
up, the programmer must allow ___ ✓ ✓ ...... ANSWER .......
a pre-purge period
the purpose of the flame sensor in a flame scanner is to
prove ___ ✓ ✓ ...... ANSWER ....... both the pilot and the
main flame (are lit)
the flame sensor is sensitive to ___ ✓ ✓ ...... ANSWER .......
infrared, visible, or ultraviolet light
FIRST CLASS STEAM LICENSE 2026 EXAM
COMPLETE (161) CURRENT TESTING
QUESTIONS AND DETAILED CORRECT
ANSWERS|GUARANTEED PASS.
STEAM LICENSE
Ace your preparation with this First Class Steam License exam,
designed to assess advanced knowledge of steam plant
operations and high-pressure boiler systems. It focuses on
system control, safety procedures, maintenance practices, and
regulatory compliance required for first-class licensing. Suitable
for stationary engineer certification candidates and power plant
professionals.
An ion-exchange softener uses a resin bed to exchange ___
with ions that cause hardness in order to soften raw water
✓ ✓ ...... ANSWER ....... sodium
Alkalinity in boiler water is normally measured using a ___ ✓
✓ ...... ANSWER ....... titration test
, Page 2 of 31
One reason to perform a bottom blowdown is to ___ ✓ ✓
...... ANSWER ....... remove sludge from the bottom of the
boiler
An ___ is generally added to the boiler water to protect the
condensate lines from carbonic acid ✓ ✓ ...... ANSWER
....... amine
A disadvantage of a timer-controlled blowdown is that it
does not ___ ✓ ✓ ...... ANSWER ....... consider changes to
the feedwater
A bottom blowdown should be performed at least once
every ___ ✓ ✓ ...... ANSWER ....... day
A ___ is a feedwater heater that separates oxygen and other
gases from the steam before releasing the gases into the
atmosphere ✓ ✓ ...... ANSWER ....... deaerator
___ is the rapid fluctuation of the water level that occurs
when steam bubbles are trapped below a film of impurities
, Page 3 of 31
on the surface of the boiler water ✓ ✓ ...... ANSWER .......
Foaming
The primary function of a combustion control system is to
regulate the ___ in a boiler ✓ ✓ ...... ANSWER ....... fuel
supply,
air supply and
draft
ON/OFF control is used to start and stop a burner ___ ✓ ✓
...... ANSWER ....... without modulating the flame to
match the steam load
A siphon is used to protect an operating pressure control
from ___ ✓ ✓ ...... ANSWER ....... live steam
an operating pressure control must be connected to the ___
✓ ✓ ...... ANSWER ....... highest part of the steam side of
the boiler
, Page 4 of 31
the two settings found on the boiler operating pressure
control are used to ___ ✓ ✓ ...... ANSWER ....... set the
operating steam pressure range of the boiler
the combustion blower continues to run after fuel is shut off
to the burner during ___ ✓ ✓ ...... ANSWER .......
postpurging
the programmer in an ONn/OFF control system is used to
___ ✓ ✓ ...... ANSWER ....... control the burner firing cycle
to eliminate the danger of a furnace explosion during start-
up, the programmer must allow ___ ✓ ✓ ...... ANSWER .......
a pre-purge period
the purpose of the flame sensor in a flame scanner is to
prove ___ ✓ ✓ ...... ANSWER ....... both the pilot and the
main flame (are lit)
the flame sensor is sensitive to ___ ✓ ✓ ...... ANSWER .......
infrared, visible, or ultraviolet light
