Deck 9: Steam Generation- Boilers

Question 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

Answer 1

fire tube boiler

Question 2

A group of gas filled tubes in a natural gas burner

A) primary tube
B) spuds
C) secondary register
D) igniter

Answer 2

spuds

Question 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

Answer 3

bellows trap

Question 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

Question 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

Question 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

Question 7

Boilers produce a variety of steam temperatures and pressures.

Question 8

Write a paragraph describing step by step what happens as a boiler is started up.

Question 9

The steam generating drum is typically operated:

A) 1/4 full
B) 1/2 full
C) 3/4 full
D) Liquid full

Question 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

Question 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

Question 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

Question 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)

Question 14

The coolest tube in the boiler system is the:

A) economizer tube
B) water make-up
C) steam generating
D) superheated

Question 15

Identify the following components:

Question 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

Question 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

Question 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

Question 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

Question 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

Question 21

Steam is used in the following applications:

Question 22

List six types of tubes found in a water-tube boiler.

Question 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

Question 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

Question 25

As steam flows from the boiler to the plant it begins to cool. When steam cools it forms _______________ .

Question 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

Question 27

The inlet line to the lower (drum)header.

A) downcomer
B) riser
C) steam generating
D) desuperheated

Question 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

Question 29

The shortest discharge line from the lower (drum) header.

A) riser
B) downcomer
C) steam generating
D) superheated

Question 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

Question 31

Identify the following components:

Question 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

Question 33

The lower drum (header.)

A) steam generating drum
B) mud drum
C) lower drum
D) generating tube

Question 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

Question 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

Question 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

Question 37

Please draw and label a fire tube boiler.

Question 38

There is a direct correlation between steam temperature and:

A) analytical variables
B) flow rates
C) level in steam generating drum
D) pressure

Question 39

Super high pressure steam is between:

A) 50-60 psig
B) 180-200 psig
C) 1000-1200 psig
D) 1800-2200 psig

Question 40

The primary purpose of a condensate recovery system is: Select all that apply!

A) Save money
B) Remove oxygen
C) Return water to boiler.
D) Remove slugs of water from steam.

Question 41

List five operating problems associated with steam generation.