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CHAPTER 9 BOILER(S) TEST
1. A type of boiler that passes hot gases through tubes to heat up and vaporize water.
a. fire tube boiler
b. water tube boiler
c. reboiler
d. steam turbine
2. A group of gas filled tubes in a natural gas burner
a. primary tube
b. spuds
c. secondary register
d. igniter
3. A steam trap that operates by opening or closing a bellows as the temperature changes.
This movement opens and closes a valve.
a. inverted bucket trap
b. float trap
c. bellows trap
d. thermostatic steam trap
4. A type of steam trap that is controlled by temperature changes.
a. inverted bucket trap
b. float trap
c. bellows trap
d. thermostatic steam trap
5. A boiler is most closely defined as a:
a. device used to convert steam energy into mechanical energy
b. device used by industry to boil water and produce steam
c. fire tube filled container submerged in water
d. furnace with water filled drums and tubes passing through it
6. Boiler load is most closely defined as a:
a. plants demand for steam
b. boilers steam capacity
c. boilers total energy demand
d. water load in boiler tubes
7. Boilers produce a variety of steam temperatures and pressures.
a. True
b. False
8. Write a paragraph describing step by step what happens as a boiler is started up.
9. The steam generating drum is typically operated:
a. 1/4 full
b. 1/2 full
c. 3/4 full
d. Liquid full
10. The downcomer is connected to:
a. mud drum and steam generating tubes
b. steam generating drum and mud drum
c. deaerator and economizer tubes
d. superheated and desuperheated tubes
11. The water make-up system takes its level measurement from the:
a. deaerator and steam generating drum
b. economizer and deaerator
c. mud drum
d. superheated tubes
12. Fans are used in a water tube boiler system to:
a. cool the burners
b. control oxygen flow rate
c. distribute heat
d. blow hot gases out the stack
13. The deaerator has the following flows in and out except:
a. safety valve (out)
b. pump (out)
c. chemical additives (in)
d. oxygen vent (out)
e. water make-up (in)
f. steam generating drum (out)
14. The coolest tube in the boiler system is the:
a. economizer tube
b. water make-up
c. steam generating
d. superheated
15. Identify the following components:
15-1 15-11
15-2 15-12
15-3 15-13
15-4 15-14
15-5 15-15
15-6 15-16
15-7 15-17
15-8 15-18
15-9 15-19
15-10 15-20
16. The burners in a water tube boiler are surrounded by which tubes:
a. riser and downcomer
b. superheated and desuperheated
c. steam generating tubes
d. economizer tubes
17. Flow moves in the opposite direction in these tubes.
a. downcomer and steam generating
b. riser and downcomer
c. riser and steam generating
d. a & b
18. The steam generating tubes are connected to the:
a. riser and downcomer
b. economizer and water make-up
c. superheated and desuperheated
d. mud drum and steam generating drum
19. A boiler utilizes the following furnace design:
a. direct fired furnace
b. fire and water tube
c. indirect fired furnace
d. all of the above
20. The convection section in a fired heater most closely resembles the ____________
section in a boiler.
a. economic
b. convective
c. dry pipe
d. economizer
21. Steam is used in the following applications:
a.
b.
c.
d.
22. List six types of tubes found in a water-tube boiler.
a. d.
b. e.
c. f.
23. Used to evenly distribute air and fuel vapors over an ignition source and into a boiler
firebox.
a. flame distributor
b. igniter
c. burner
d. flare tip
24. A section of the boiler utilized to preheat feed water before it enters the main boiler
system.
a. convection section
b. economizer section
c. radiant tube section
d. shockbank
25. As steam flows from the boiler to the plant it begins to cool. When steam cools it forms
_______________ .
26. Slugs of water can damage equipment and lead to a condition known as:
a. thermal expansion
b. water hammer
c. thermal shock
d. warping
27. The inlet line to the lower (drum)header.
a. downcomer
b. riser
c. steam generating
d. desuperheated
28. The principle reason water circulation occurs in a water tube boiler is because of:
a. natural buoyancy forces
b. equipment design
c. tapered design of steam generating tubes
d. length of riser tube
29. The shortest discharge line from the lower (drum) header.
a. riser
b. downcomer
c. steam generating
d. superheated
30. Some processes can not take superheated steam so a process known as desuperheating is
applied to remove this additional heat. This process routes the superheated steam through
the liquid level in the upper drum.
a. boiler load
b. superheated steam
c. desuperheated steam
d. cut in the line
31. Identify the following components:
31-1
31-2
31-3
31-4
31-5
32. A steam trap that operates with an upside-down bucket inside a casing. It is effective on
condensate and non-condensing vapors.
a. inverted bucket trap
b. floating bucket trap
c. bellows bucket trap
d. thermostatic steam trap
33. The lower drum (header.)
a. steam generating drum
b. mud drum
c. lower drum
d. generating tube
34. Steam that is removed from the water and heated up to a higher temperature.
a. boiler load
b. superheated steam
c. desuperheated steam
d. cut in the line
35. A device used to separate liquids from gases and return them to a condensate header.
a. strainer
b. steam bucket
c. steam trap
d. check valve
36. A steam trap that operates with a float that opens a valve as the condensate level rises.
a. inverted bucket trap
b. float trap
c. floating bellows trap
d. thermostatic float steam trap
37. Please draw and label a fire tube boiler.
38. There is a direct correlation between steam temperature and:
a. analytical variables
b. flow rates
c. level in steam generating drum
d. pressure
39. Super high pressure steam is between:
a. 50-60 psig
b. 180-200 psig
c. 1000-1200 psig
d. 1800-2200 psig
40. The primary purpose of a condensate recovery system is: Circle all that apply!
a. Save money
b. Remove oxygen
c. Return water to boiler.
d. Remove slugs of water from steam.
41. List five operating problems associated with steam generation.
a.
b.
c.
d.
e.
Answer Key Chapter 9 Boilers
