Combustion eflciency may be increased by the pri-
Preheating
mary air
What is the purpose of cinder reinjection? increase eflciency
2 forces of equal intensity acting in opposite directions is? tension
What is true about the dew poimt of flue gasses dew point is the temp at which the gasses will condense
What will not cause high stack temps? plugged dry pipe
What is true about smoke smoke consists of unburned hydrocarbons
WHat is used to reduce SO2 emissions in coal fired boil-
Wet or dry scrubbers
ers?
In a solid fuel fired boiler, a gradual increase in flue gas
exit temps over a course of a shift inidicates the boiler operate soot blowers
operator needs to
What watertube bolier is the largest in size and
Utility watertube boiler
steam-generating compacitity
the blowdown on a safety valve can be altered by changing
huddling ring
the setting of the
Copper and brass piping may be used for piping systems
406 degrees
as long as the temp does not exceed
What is not measured in a 3 element feedwater system
-feedwater flow
-drum pressure drum pressure
-steam flow
-drum level
If the flame in a gas-fired bolier is pulsating how can the
increase furnace draft
problem be fixed?
Grindability of coal is an issue to be considered when
ball-and-race pulvarizer
operating which kid of coal-burining equipment?
, Ohio Stationary Steam Engineer Exam Test with Answers Rated A
When using an induced draft fan, where will the strongest
at the inlet of the ID fan
negative draft be found
turn ott the fuel and air supplies, the re-light the burner as
How do you bank a fuel oil-fired boiler? necessary to maintain a predetermined minimum steam
pressure
What is true about the lube oil used in a steam turbine it must readily seperate oil and water
What supplies the oil to a large steam turbine during
aux oil pump
start-up
What device prevents the over-travel of the governor link-
age that might be caused by the weight of the governor Dashpot
components
When taking a boiler out of service what should you not
close the vent
do
what type of turbine oil purification system periodically
makeup oil system
removes a potion of the oil and replaces it with fresh oil?
what type of steam turbine system has steam take-otts
extraction turbine
prior to going into the condenser?
What is the pressure above which the exhaust side of
a steam turbine and the connected piping may be pro-
15 psi
tected by either a safety valve or a rupture disc, or a
combination of the 2
What grade fuel oil may be ignited by an electric spark
#2
from electrodes powered by an ignition transformer?
what is the cheapest, easiest form of water treatment? heating the water
A turbine exhausts steam @ 15 psi. This steam is used in
a low-pressure application such as a deareator. this type back-pressure turbine
of turbine is called a:
, Ohio Stationary Steam Engineer Exam Test with Answers Rated A
At what temp should you add cooling water to a turbines
110-120 degrees
bearings?
What is produced from the reaction between sodium sul-
sodium sulfate
fite and oxygen?
What is the purpose of an attemperator reduce temp of superheated steam by adding a water mist
What are the 2 main methods by which steam is prevented
from leaking out around the turbine shaft where the shaft labyrinth seals and carbon rings
exits the casing?
If the water in a boiler is foaming, the water level indica-
erratic
tion in the gauge glass will be:
Cast iron or ductile iron pipe is used for: underground water supply and drainage
What is the maximum allowable level of dissolved solids
.1 ppm
in the steam being supplied to a steam turbine?
If a boiler requires a second safety valve, the highest
pressure setting on the additional valve should not exceed 3%
the MAWP by more than
Steam is tapped ott a turbine casing at several pressures
extraction steam
for aux. uses in the production plant. the steam is called:
If the tubes in a boiler are flared during installation, which
of the following is true?
-The ID is increased
The ID is increased
-The OD is decreased
-The length is decreased
-the wall thickness is increased
What problem is caused by dirty condenser tubes? inability to maintain a normal vacuum on condenser
A lubrication with low viscosity is usually: adapted to high RPM use
On a bicolor gauge glass water will appear and
green, red
steam will appear