City of Omaha 3rd Grade N.A.P.E. Stationary Engineers Test
Study online at https://quizlet.com/_f7l1pw
1. How can you lose Drinking on the job / sleeping on the job / negligence / unsafe work / failing to
your license? renew your license annually / signing a falsified licensing application for someone
2. What must you You must notify city hall if you change jobs, change your address or if you retire
do if you change
jobs?
3. Why should you You do rounds so that you can find and correct problems to prevent break downs.
do rounds? Keeping permanent records will make it easier to forecast most breakdowns
because you will get to know your equipment.
4. What is a steam A steam boiler is a closed vessel PARTIALLY FILLED with water, under pressure, that
Boiler? transforms water into steam with the application of heat.
5. What are require- 1. simple
ments of a good 2. designed to accommodate expansion and contraction
boiler? 3. adequate steam and water space
4. efficient
5. responsive to demands
6. accessible for cleaning and repair
7. safe
6. Name and de- RADIANT HEAT-is heat radiated from a hot to cold body and depends on the
scribe three types temperature difference and the color of the body that receives the heat. The heat
of heat transfer from the sun reaches us by means of radiation.
used in boiler op-
eration. CONDUCTION HEAT-is heat that passes from the gas to the tube by physical contact.
The heat passes from molecule of metal to molecule of metal with no displacement
of the molecules.
CONVECTION HEAT-is heat transmitted from a hot to cold body by movement of the
conveying substance.
, City of Omaha 3rd Grade N.A.P.E. Stationary Engineers Test
Study online at https://quizlet.com/_f7l1pw
7. What is a com- The area of a boiler where the burning of fuel occurs
bustion cham-
ber?
8. What is an in- Internally fired boilers are those in which the grate and combustion chamber are
ternally fired boil- enclosed within the boiler shell.
er and name 4
types. Scotch Marine
Cast iron package
Steam locomotive
Vertical fire tube
9. What is an ex- Externally fired boiler is a boiler in which the setting, including furnace and grates
ternally fired boil- are separate and distinct from the boiler shell.
er and name 4
types. Horizontal return tube set on brick
Heine
Cast iron set on brick
Sterling water tube
10. What is a crown The crown sheet in a vertical fire tube boiler holds the tubes and is thicker because
sheet and what it is exposed to fire.
is its purpose?
What is a tube The tube sheet holds the tubes and does not see the fire.
sheet and what is
its purpose?
11. What is a water A water leg is the space between the outer shell and the furnace shell containing
leg on a boiler? boiler water. It absorbs heat that would be wasted and increases the capacity of
the boiler. The surfaces are flat and must be stayed.
12. H.R.T. boilers are inclined 1-3 inches front to rear, for drainage and removal of
impurities.
Study online at https://quizlet.com/_f7l1pw
1. How can you lose Drinking on the job / sleeping on the job / negligence / unsafe work / failing to
your license? renew your license annually / signing a falsified licensing application for someone
2. What must you You must notify city hall if you change jobs, change your address or if you retire
do if you change
jobs?
3. Why should you You do rounds so that you can find and correct problems to prevent break downs.
do rounds? Keeping permanent records will make it easier to forecast most breakdowns
because you will get to know your equipment.
4. What is a steam A steam boiler is a closed vessel PARTIALLY FILLED with water, under pressure, that
Boiler? transforms water into steam with the application of heat.
5. What are require- 1. simple
ments of a good 2. designed to accommodate expansion and contraction
boiler? 3. adequate steam and water space
4. efficient
5. responsive to demands
6. accessible for cleaning and repair
7. safe
6. Name and de- RADIANT HEAT-is heat radiated from a hot to cold body and depends on the
scribe three types temperature difference and the color of the body that receives the heat. The heat
of heat transfer from the sun reaches us by means of radiation.
used in boiler op-
eration. CONDUCTION HEAT-is heat that passes from the gas to the tube by physical contact.
The heat passes from molecule of metal to molecule of metal with no displacement
of the molecules.
CONVECTION HEAT-is heat transmitted from a hot to cold body by movement of the
conveying substance.
, City of Omaha 3rd Grade N.A.P.E. Stationary Engineers Test
Study online at https://quizlet.com/_f7l1pw
7. What is a com- The area of a boiler where the burning of fuel occurs
bustion cham-
ber?
8. What is an in- Internally fired boilers are those in which the grate and combustion chamber are
ternally fired boil- enclosed within the boiler shell.
er and name 4
types. Scotch Marine
Cast iron package
Steam locomotive
Vertical fire tube
9. What is an ex- Externally fired boiler is a boiler in which the setting, including furnace and grates
ternally fired boil- are separate and distinct from the boiler shell.
er and name 4
types. Horizontal return tube set on brick
Heine
Cast iron set on brick
Sterling water tube
10. What is a crown The crown sheet in a vertical fire tube boiler holds the tubes and is thicker because
sheet and what it is exposed to fire.
is its purpose?
What is a tube The tube sheet holds the tubes and does not see the fire.
sheet and what is
its purpose?
11. What is a water A water leg is the space between the outer shell and the furnace shell containing
leg on a boiler? boiler water. It absorbs heat that would be wasted and increases the capacity of
the boiler. The surfaces are flat and must be stayed.
12. H.R.T. boilers are inclined 1-3 inches front to rear, for drainage and removal of
impurities.
