upStationary Grade 3 Engineering License
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1. how can you loose your li- 1) drinking on the job
cense? 2) sleeping on the job
3) negligence
4) unsafe work
5) signing a falsified license application for someone
6) failing to renew your license annually
2. what must you do if you notify city hall if you change jobs, address or retire
change jobs?
3. why should you do rounds? Find and correct problems to prevent breakdowns. keeping
permanent records will make it easy to forecast most break-
downs because you will get to know equipment
4. what is a steam boiler? closed vessel, PARTIALLY FILLED WITH WATER, under pressure
that transforms water to steam with the application of heat.
5. what are the requirements of 1) simple
a good boiler? 2) designed to accommodate expansion and contraction
3) adequate steam and water space
4) efficient
5) responsive to demands
6) accessible for cleaning and repairs
7) safe
6. Name and describe 3 types 1) RADIANT HEAT - transmitted from hot body to a cold body
of heat transfer used in boiler by means of direct radiation (heat from sun reaches us by
operation radiation)
2) CONDUCTION - physical contact (coffee cup is heated by
conduction when hot coffee touches the cup)
3) CONVECTION - carried along by a moving part such as air
, upStationary Grade 3 Engineering License
Study online at https://quizlet.com/_5g1r3a
or water (your living room is heated by warm air from your
furnace in another location
7. what is a combustion cham- the area of the boiler where COMPLETE burning of the fuel
ber? occurs
8. what is an internally fired boil- those in which the grate and combustion chamber are en-
er? closed within the boiler shell.
----- -----
name 4 types 1) Scotch marine
2) Vertical firetube
3) Locomotive
4) Cast iron package boiler
9. what is an externally fired the setting, including the furnace and grates is separate and
boiler distinct from the boiler shell.
----- -----
name 4 types 1) horizontal return tubular (HRT) set in brick
2) some watertube
3) cast iron set in brick
4) Stirling boiler
5) Heine boiler
10. what is a crown sheet and its in a vertical firetube boiler holds the tubes and is thicker be-
purpose? cause it is exposed to the fire.
----- -----
what is a tube sheet and its holds the tubes and does not see the fire
purpose?
11. what is a waterleg on a boiler? space between the outer shell and the furnace containing boil-
er water. it absorbs heat that would be wasted and increases
the capacity of the boiler. the surfaces are flat and must be
stayed.
, upStationary Grade 3 Engineering License
Study online at https://quizlet.com/_5g1r3a
12. is an HRT Boiler set level or INCLINED 1-3" front to rear to permit drainage and removal of
inclined and why? water impurities
----- -----
are HRT Boiler tubes set level INCLINED with the boiler
or inclined and why?
13. Name 2 way to support and 1) Suspended from hangars and supported by overhead
take care of expansion of an beams
HRT Boiler 2) Set on saddles equipped with rollers to permit movement of
----- the boiler as it expands and contracts
Which way is best? -----
Suspended from hangars and supported by overhead beams
is best because it works no hardship on the furnace walls
14. what is a longitudinal joint? LONGITUDINAL JOINT = seam running the length of the shell
----- and is butt strap construction or fusion welded. it is above the
what is a circumferential fireline to avoid overheating.
joint? -----
CIRCUMFERENTIAL JOINT = lap joint running the circumference
of the drum
15. what is the difference be- 1) Flue - 4" or more in diameter measured internally
tween a flue and a tube? 2) Tube - 4" or less in diameter measured externally
16. what is a drypipe and where is a steam separator located within the boiler shell and connected
it located? to the steam outlet. its upper surface is perforated. steam
enters the perforations rapidly changing its direction of flow
causing droplets and impurities to separate from the steam
before entering the steam outlet.
17. describe a Scotch Marine Boil- it is an internally fired self contained horizontal return firetube
er? boiler.
, upStationary Grade 3 Engineering License
Study online at https://quizlet.com/_5g1r3a
----- -----
how it is fired it is a cylindrical shell containing the combustion chamber and
tubes that are surrounded by water.
18. how is a Stirling Boiler sus- lugs on the ends of the upper drums rest on the beams of its
pended? structure. the lower (MUD) drum is suspended from the tubes
and is free to move by expansion.
19. describe the circulation of wa- feed water enters the top rear drum, passes down the rear
ter within the Stirling Boiler tubes to the mud drum. steam and boiler water go up the front
and center tubes to the front and center drums. CIRCULATING
TUBES allow boiler water to pass between the drums. what
does not go out as steam, goes back down the rear tubes.
20. what provisions are made for 1) some tubes are left out
tube removal on water boil- 2) the tubes are staggered
ers? 3) sometimes, every other row is omitted
21. What is a water tube boiler? in a water tube boiler, products of combustion pass around
----- tubes containing boiler water
list 5 advantages -----
----- ADVANTAGES:
list 5 disadvantages 1) rapid steamers
----- 2) use less water
name 4 types 3) less chance of explosion
4) no flat surfaces
5) smaller tube sizes
-----
DISADVANTAGES:
1) elaborate settings
2) field assembled
3) initial cost per pound of steam is higher
4) greater number of openings thus more air infiltration
Study online at https://quizlet.com/_5g1r3a
1. how can you loose your li- 1) drinking on the job
cense? 2) sleeping on the job
3) negligence
4) unsafe work
5) signing a falsified license application for someone
6) failing to renew your license annually
2. what must you do if you notify city hall if you change jobs, address or retire
change jobs?
3. why should you do rounds? Find and correct problems to prevent breakdowns. keeping
permanent records will make it easy to forecast most break-
downs because you will get to know equipment
4. what is a steam boiler? closed vessel, PARTIALLY FILLED WITH WATER, under pressure
that transforms water to steam with the application of heat.
5. what are the requirements of 1) simple
a good boiler? 2) designed to accommodate expansion and contraction
3) adequate steam and water space
4) efficient
5) responsive to demands
6) accessible for cleaning and repairs
7) safe
6. Name and describe 3 types 1) RADIANT HEAT - transmitted from hot body to a cold body
of heat transfer used in boiler by means of direct radiation (heat from sun reaches us by
operation radiation)
2) CONDUCTION - physical contact (coffee cup is heated by
conduction when hot coffee touches the cup)
3) CONVECTION - carried along by a moving part such as air
, upStationary Grade 3 Engineering License
Study online at https://quizlet.com/_5g1r3a
or water (your living room is heated by warm air from your
furnace in another location
7. what is a combustion cham- the area of the boiler where COMPLETE burning of the fuel
ber? occurs
8. what is an internally fired boil- those in which the grate and combustion chamber are en-
er? closed within the boiler shell.
----- -----
name 4 types 1) Scotch marine
2) Vertical firetube
3) Locomotive
4) Cast iron package boiler
9. what is an externally fired the setting, including the furnace and grates is separate and
boiler distinct from the boiler shell.
----- -----
name 4 types 1) horizontal return tubular (HRT) set in brick
2) some watertube
3) cast iron set in brick
4) Stirling boiler
5) Heine boiler
10. what is a crown sheet and its in a vertical firetube boiler holds the tubes and is thicker be-
purpose? cause it is exposed to the fire.
----- -----
what is a tube sheet and its holds the tubes and does not see the fire
purpose?
11. what is a waterleg on a boiler? space between the outer shell and the furnace containing boil-
er water. it absorbs heat that would be wasted and increases
the capacity of the boiler. the surfaces are flat and must be
stayed.
, upStationary Grade 3 Engineering License
Study online at https://quizlet.com/_5g1r3a
12. is an HRT Boiler set level or INCLINED 1-3" front to rear to permit drainage and removal of
inclined and why? water impurities
----- -----
are HRT Boiler tubes set level INCLINED with the boiler
or inclined and why?
13. Name 2 way to support and 1) Suspended from hangars and supported by overhead
take care of expansion of an beams
HRT Boiler 2) Set on saddles equipped with rollers to permit movement of
----- the boiler as it expands and contracts
Which way is best? -----
Suspended from hangars and supported by overhead beams
is best because it works no hardship on the furnace walls
14. what is a longitudinal joint? LONGITUDINAL JOINT = seam running the length of the shell
----- and is butt strap construction or fusion welded. it is above the
what is a circumferential fireline to avoid overheating.
joint? -----
CIRCUMFERENTIAL JOINT = lap joint running the circumference
of the drum
15. what is the difference be- 1) Flue - 4" or more in diameter measured internally
tween a flue and a tube? 2) Tube - 4" or less in diameter measured externally
16. what is a drypipe and where is a steam separator located within the boiler shell and connected
it located? to the steam outlet. its upper surface is perforated. steam
enters the perforations rapidly changing its direction of flow
causing droplets and impurities to separate from the steam
before entering the steam outlet.
17. describe a Scotch Marine Boil- it is an internally fired self contained horizontal return firetube
er? boiler.
, upStationary Grade 3 Engineering License
Study online at https://quizlet.com/_5g1r3a
----- -----
how it is fired it is a cylindrical shell containing the combustion chamber and
tubes that are surrounded by water.
18. how is a Stirling Boiler sus- lugs on the ends of the upper drums rest on the beams of its
pended? structure. the lower (MUD) drum is suspended from the tubes
and is free to move by expansion.
19. describe the circulation of wa- feed water enters the top rear drum, passes down the rear
ter within the Stirling Boiler tubes to the mud drum. steam and boiler water go up the front
and center tubes to the front and center drums. CIRCULATING
TUBES allow boiler water to pass between the drums. what
does not go out as steam, goes back down the rear tubes.
20. what provisions are made for 1) some tubes are left out
tube removal on water boil- 2) the tubes are staggered
ers? 3) sometimes, every other row is omitted
21. What is a water tube boiler? in a water tube boiler, products of combustion pass around
----- tubes containing boiler water
list 5 advantages -----
----- ADVANTAGES:
list 5 disadvantages 1) rapid steamers
----- 2) use less water
name 4 types 3) less chance of explosion
4) no flat surfaces
5) smaller tube sizes
-----
DISADVANTAGES:
1) elaborate settings
2) field assembled
3) initial cost per pound of steam is higher
4) greater number of openings thus more air infiltration
