First Class Steam License Exam
Latest Edition 2025-2026. Questions &
Correct Answers. Graded A
___ are usually used to create the draft needed to overcome the resistance
caused by economizer tubes - ANS Induced draft fans (they pull the draft
through the furnace)
___ control increases safety by adding a linking system that prevents the
airflow from going too low for the amount of fuel flow during load changes -
ANSsingle-point positioning
___ feedwater regulators are found on package fire-tube or watertube
boilers where feedwater pumps run either intermittently or consistantly -
ANSFloat
___ is small water particles and impurities carried out of the boiler into the
steam lines - ANSCarryover
___ is the process where the water level in a boiler momentarily rises with
an increase in steam demand - ANSSwell
___ is the rapid fluctuation of the water level that occurs when steam
bubbles are trapped below a film of impurities on the surface of the boiler
water - ANSFoaming
1
,___ is used to adjust the air-fuel ratio based on the results of a flue gas
analysis - ANSOxygen trim
______ are used for loads that require dry steam, such as turbines -
ANSsuperheaters
_________ fittings are used for water columns operating above 350 PSI -
ANSSteel
__________pressure is the pressure caused by the weight of a column of
water - ANShydrostatic
___is a filtration process in which the water is pressurized and applied
against the surface of a semipermeable membrane - ANSReverse osmosis
***When water is boiling, the water in the boiler and steam above it are at
___ - ANSthe same temperature and pressure
# 17 is being thrown out - ANS...
A ___ is a boiler fitting that reduces the turbulence of boiler water to make it
easier to measure the water level - ANSwater column
a ___ is a controller that distributes steam production requirements across
several boilers to maintain the steam pressure at the set point - ANSplant
master
2
, A ___ is a feedwater heater that separates oxygen and other gases from
the steam before releasing the gases into the atmosphere - ANSdeaerator
A ___ is used in applications where there are varying flows of condensate
and additional condensate storage capacity is required - ANSsurge tank
A ___ steam trap is a steam trap that has a single movable disc that rises
to allow the discharge of air and cool condensate - ANSthermodynamic
A 10 degree F rise in feed-water temperature produces approximately ___
% savings in fuel - ANS1%
A 3-element feedwater regulator measures the steam flow from the
boiler..... the ___ into the boiler, and the water level - ANSfeedwater flow
A bottom blowdown should be performed at least once every ___ - ANSday
A cold-lime soda softener works at ___ - ANSambient temperature
a control Loop uses a____________as the control element - ANSsteam
pressure controller
a control system uses a__________to execute a control strategy -
ANScontrol Loop
3
Latest Edition 2025-2026. Questions &
Correct Answers. Graded A
___ are usually used to create the draft needed to overcome the resistance
caused by economizer tubes - ANS Induced draft fans (they pull the draft
through the furnace)
___ control increases safety by adding a linking system that prevents the
airflow from going too low for the amount of fuel flow during load changes -
ANSsingle-point positioning
___ feedwater regulators are found on package fire-tube or watertube
boilers where feedwater pumps run either intermittently or consistantly -
ANSFloat
___ is small water particles and impurities carried out of the boiler into the
steam lines - ANSCarryover
___ is the process where the water level in a boiler momentarily rises with
an increase in steam demand - ANSSwell
___ is the rapid fluctuation of the water level that occurs when steam
bubbles are trapped below a film of impurities on the surface of the boiler
water - ANSFoaming
1
,___ is used to adjust the air-fuel ratio based on the results of a flue gas
analysis - ANSOxygen trim
______ are used for loads that require dry steam, such as turbines -
ANSsuperheaters
_________ fittings are used for water columns operating above 350 PSI -
ANSSteel
__________pressure is the pressure caused by the weight of a column of
water - ANShydrostatic
___is a filtration process in which the water is pressurized and applied
against the surface of a semipermeable membrane - ANSReverse osmosis
***When water is boiling, the water in the boiler and steam above it are at
___ - ANSthe same temperature and pressure
# 17 is being thrown out - ANS...
A ___ is a boiler fitting that reduces the turbulence of boiler water to make it
easier to measure the water level - ANSwater column
a ___ is a controller that distributes steam production requirements across
several boilers to maintain the steam pressure at the set point - ANSplant
master
2
, A ___ is a feedwater heater that separates oxygen and other gases from
the steam before releasing the gases into the atmosphere - ANSdeaerator
A ___ is used in applications where there are varying flows of condensate
and additional condensate storage capacity is required - ANSsurge tank
A ___ steam trap is a steam trap that has a single movable disc that rises
to allow the discharge of air and cool condensate - ANSthermodynamic
A 10 degree F rise in feed-water temperature produces approximately ___
% savings in fuel - ANS1%
A 3-element feedwater regulator measures the steam flow from the
boiler..... the ___ into the boiler, and the water level - ANSfeedwater flow
A bottom blowdown should be performed at least once every ___ - ANSday
A cold-lime soda softener works at ___ - ANSambient temperature
a control Loop uses a____________as the control element - ANSsteam
pressure controller
a control system uses a__________to execute a control strategy -
ANScontrol Loop
3
