3RD CLASS STATIONARY STEAM ENGINEER
LICENSE PREP (actual 2025/2026) QUESTIONS
WITH COMPLETE SOLUTIONS
_________ are necessary for complete combustion
time, temperature, mixture, and atomization
if the steam pressure gauge indicates 200 PSIG, the absolute
pressure is______
214.7
a boiler is operating at 400 PSI, and the safety valve opens at
410 PSI and closes at 398 PSI. The blowdown is______psi
12
,extra-heavy pipe must be used on blowdown lines when the
steam pressure exceeds______ psi
125
to check the water level on a boiler online, it is best to_____
blowdown the gauge glass
a steam pressure gauge has a siphon between the boiler and
the pressure gauge to _______
prevent Steam from entering the pressure gauge
if a boiler evaporates 50,000 lbs of steam/hour and is
evaporating 10 pounds of steam/sq ft of heating surface, the
heating surface of the boiler is ____sq ft
5000
,oxygen in feed water causes ______
pitting
it is permissible to have one blowdown valve on a boiler
operated under______ psi
100
at atmospheric pressure, water boils and turns to steam at
_____ °f
212
a steam pressure gauge is protected against excessive
temperature by a ______
siphon
, the only type of safety valve allowed on a boiler by the asme
code is a_____ safety valve
spring-loaded pop
the primary function of a boiler is to _____
generate steam efficiently
if the burner is firing and no water is in the gauge glass, the
best procedure to follow is to_______
shut down the burner and secure the boiler
a high pressure boiler operates at a pressure above______ PSI
and 6 BHP
15
a safety valve on a boiler pops______
LICENSE PREP (actual 2025/2026) QUESTIONS
WITH COMPLETE SOLUTIONS
_________ are necessary for complete combustion
time, temperature, mixture, and atomization
if the steam pressure gauge indicates 200 PSIG, the absolute
pressure is______
214.7
a boiler is operating at 400 PSI, and the safety valve opens at
410 PSI and closes at 398 PSI. The blowdown is______psi
12
,extra-heavy pipe must be used on blowdown lines when the
steam pressure exceeds______ psi
125
to check the water level on a boiler online, it is best to_____
blowdown the gauge glass
a steam pressure gauge has a siphon between the boiler and
the pressure gauge to _______
prevent Steam from entering the pressure gauge
if a boiler evaporates 50,000 lbs of steam/hour and is
evaporating 10 pounds of steam/sq ft of heating surface, the
heating surface of the boiler is ____sq ft
5000
,oxygen in feed water causes ______
pitting
it is permissible to have one blowdown valve on a boiler
operated under______ psi
100
at atmospheric pressure, water boils and turns to steam at
_____ °f
212
a steam pressure gauge is protected against excessive
temperature by a ______
siphon
, the only type of safety valve allowed on a boiler by the asme
code is a_____ safety valve
spring-loaded pop
the primary function of a boiler is to _____
generate steam efficiently
if the burner is firing and no water is in the gauge glass, the
best procedure to follow is to_______
shut down the burner and secure the boiler
a high pressure boiler operates at a pressure above______ PSI
and 6 BHP
15
a safety valve on a boiler pops______
