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Boiler Exam Review #5

Total questions: 100

Worksheet time: 56mins

Name
Class
Date
1.

What is the function of a boiler?

a)

to heat water to make steam

b)

to heat water to make spaghetti

c)

to transform liquid into a mist

d)

to mix air and fuel

2.

What two products are required (needed) to produce (make) steam?

a)

water

b)

heat

c)

fan

d)

boiler

3.

When taking over a shift, the boiler operator must first check the ___.

a)

steam pressure

b)

fuel oil supply

c)

water level on all boilers

d)

bottom blowdown valves

4.

Air preheater is used to preheat air with the help of ______

a)

Air

b)

Flue gases

c)

Water

d)

Steam

5.

________is the transfer of heat through a solid object, or between two objects, as a result of physical contact.

a)

Conduction

b)

Convection

c)

Radiation

6.

___ draft is created by a draft fan that pulls the gases of combustion through the furnace.

a)

Forced

b)

Natural

c)

Induced

d)

Chimney

7.

Mechanical draft is produced by ___.

a)

the height of the chimney

b)

the diameter of the chimney

c)

power-driven fans

d)

steam jets

8.

This boiler has flue gasses passing around the tubes and water flowing through the tubes

a)

Fire tube

b)

Cast iron

c)

Condensing

d)

Water tube

9.

Soot accumulation during combustion

a)

Will cause and increase in efficiency

b)

will have no effect on efficiency

c)

will cause a decrease in efficiency

d)

none of the above

10.

Scale accumulation on the inside of a boiler can lead to

a)

A decrease in heat transfer

b)

An increase in heat transfer

c)

Will stop all heat transfer

d)

All of the above

11.

Mechanical draft can be classified as ___.

a)

pressurized

b)

natural

c)

regenerative

d)

forced or induced

12.

The induced draft fan is located ___.

a)

between the burner and the chimney

b)

inside the air preheater

c)

at the burner

d)

in the first pass of the gases of combustion

13.

The amount of draft produced in a natural draft system depends on the ___.

a)

diameter of the chimney

b)

height of the chimney

c)

amount of flyash in the gases of combustion

d)

types of fans used

14.

When an insufficient (not enough) amount of air is supplied to a boiler, unburned fuel can create _________ deposits.

a)

soot

b)

scale

c)

stoker

d)

draft

15.

Dense (thick) white smoke leaving the stack in an indication that too much _____ is being supplied to the boiler.

a)

soot

b)

air

c)

fuel

d)

scale

16.

A ______ draft fan pushes combustion gases into a boiler.

a)

forced

b)

induced

c)

natural

17.

boiler water having high alkalinity could develop ___

a)

acidic corrosion

b)

oxygen pitting

c)

caustic embrittlement

d)

warping

18.
What is the function of feed water pumps?
a)
to pump steam to the boiler
b)
to circulate feed water through the exhaust boiler
c)
to supply pressure to the boiler
d)
to pump feed water to the boiler
19.
What is a fire-tube boiler? 
a)
hot gases go into water, creating a mixture of exhaust and steam
b)
hot gases pass through a water pipe that provides heat to the surroundings
c)
hot gases pass through fire-tubes, which continue to the burner
d)
hot gases pass through steel tubes surrounded by water, and the water is thus heated by the hot gases
20.
What is a water-tube boiler?
a)
water is passed through steel tubes surrounded by exhaust (gases), and the water is then heated by the hot gases
b)
hot gases pass through tubes surrounded by water, and the water is thus heated by the hot gases
c)
water runs through the boiler and out the safety valves
d)
water is outside the pipes and is heated up by the exhaust (gases)
21.

What is the first thing we should identify the location of in a boiler room

a)

Fuel piping

b)

Feed water piping

c)

Make up air louvers

d)

Emergency shut off switch

22.

This type of boiler can be easily assembled in place

a)

Water tube

b)

Cast iron

c)

Fire tube

d)

Condensing

23.

Which of the following is the proper method for testing a low water cut off device on a steam heating boiler?

a)

Lower the water level in the boiler until the alarm rings

b)

Lower the water level in the boiler until the burner shuts down

c)

Shut off the fuel to the boiler

d)

Test the water column with the test gauge

24.

Which of the following is not a classification of a hot water system?

a)

a two pipe reverse return system

b)

a hartford loop system

c)

a one pipe system

d)

a two pipe direct return system

25.

Safety valves are designed to operate in what fashion(way)?

a)

open to break the cycle to prevent a flame-out

b)

open slowly to prevent water hammer and burning

c)

to pop open

d)

to be opened only by hand when off-line

26.

What chemical would be used to control alkalinity in a boiler?

a)

caustic soda

b)

sodium sulfate

c)

phosphate

d)

sodium sulfite

27.

Which of the following types of similarly sized valves requires the most manual valve stem rotation to move from fully open to fully closed? (Assume each valve has a non-rising stem)

a)

butterfly

b)

ball

c)

plug

d)

gate

28.

In order to reduce the viscosity of fuel oil, it is necessary to ____.

a)

decrease its temperature

b)

decrease its pour point

c)

increase its temperature

d)

decrease its pressure

29.

What is the maximum temperature allowed on all low pressure heating boilers?

a)

200 degrees F

b)

250 degrees F

c)

212 degrees F

d)

175 degrees F

30.

What ASME code are heating boilers built to?

a)

ASME Code, Section V

b)

ASME Code, Section VI

c)

ASME Code, Section IV

d)

ASME Code, Section II

31.

The ASME Code states that the setting on the high limit pressure control on a low pressure steam boiler shall not exceed:

a)

12 psig

b)

10 psig

c)

15 psig

d)

18 psig

32.

Boiler water pH requirements vary, but the pH value of boiler water typically should be maintained between ___ to prevent scale formation.

a)

5 and 7.5

b)

8 ad 10.5

c)

10 and 11.5

d)

12 and 14.5

33.

Draft is measured in ___.

a)

pounds per square inch

b)

inches of water column

c)

tenths of an inch of mercury

d)

ounces per square inch

34.

The amount of draft produced in a natural draft system depends on the ___.

a)

diameter of the chimney

b)

height of the chimney

c)

amount of flyash in the gases of combustion

d)

types of fans used

35.

Water boils at ______ degrees Fahrenheit.

a)

200

b)

100

c)

212

d)

210

36.

When taking over a shift, the boiler operator must first check the ___.

a)

steam pressure

b)

fuel oil supply

c)

water level on all boilers

d)

bottom blowdown valves

37.

The feedwater system does what?

a)

Prevents water from entering the boiler during start up.

b)

Senses the flame during ignition

c)

Supplies the proper amount of water to the boiler

d)

Punt on third down

38.

Make up water is water added to the boiler to replace lost water from

a)

Leaks in the system

b)

Water loss during blowdown

c)

Water loss to evaporation

d)

All the answers

39.

If the water level in the boiler is too high

a)

The boiler could boil dry and explode

b)

Carryover or priming could occur

c)

Water will heat too quickly

d)

I have a friend named Steve

40.

what type of valve has NO CHANGE in direction

a)

a heart valve

b)

a globe valve

c)

a gate valve

d)

a check valve

41.

what type of valve allows flow in only one direction

a)

a check valve

b)

a globe valve

c)

a gate valve

d)
42.

What valve is used to isolate the boiler from feedwater accessories

a)

A Stop Valve

b)

A Boil Valve

c)

A Go Valve

d)

A Check Valve

43.

______ is water added to the boiler to replace lost water due to leaks or lost condensate

a)

Make believe water

b)

Makeup water

c)

Milk

d)

RedBull

44.

NOWL stands for....

a)

National Organization of Whale

Lovers

b)

Normal Operating Water Liquid

c)

Normal Operating Water Level

45.

_______ is installed on the make up water supply line and prevents the flow of water from the boiler to the water supply

a)

A hickory stick

b)

Boiler fixer

c)

Backflow preventer

d)
46.

Make up water is untreated and contains

a)
b)

Rust

c)

Scale forming salts

47.

Make up water can also contain oxygen

Oxygen in boiler water causes

a)

Evaporation

b)

Condensation

c)

Cracking of boiler seams

d)

Pitting and corrosion

48.

Strainers protect automatic water feed systems

How often should the strainer be cleaned?

a)

Every day

b)

Daily

c)

Every 24 hours

d)

Once a month

49.

The oldest form of draft used in a boiler is ___ draft.

a)

mechanical

b)

natural

c)

forced

d)

combination

50.

Identify the boiler type

a)

Water type

b)

liquid fuel type

c)

Fire tube type

d)

Coal type

51.

Identify the type of boiler

a)

Fire type

b)

Water type

c)

Coal type

d)

vertical type

52.

What is the lowest permissible water level in a fire tube boiler

a)

.5 inch above tubes

b)

1.5 inch above tubes

c)

3 inch above tubes

d)

1 inch above tubes

53.

The three ingredients needed to start a fire are fuel, heat, and ___.

a)

carbon dioxide

b)

combustible material

c)

nitrogen

d)

oxygen

54.

absolute pressure (psia) is...

a)

A test used to establish the relief capacity of boiler safety valves

b)

the total amount of pressure created in a enclosed boiling system

c)

Gauge pressure plus atmospheric pressure

d)

a audible electronic alarm given off during high amounts of pressure

55.

Soot accumulation during combustion

a)

Will cause and increase in efficiency

b)

will have no effect on efficiency

c)

will cause a decrease in efficiency

d)

none of the above

56.

Define boiler.

a)

mechanical device that control the flow and pressure within a system

b)

closed vessel in which water or other fluid is heated

c)

machine components that can attached two or more larger part

57.

Define Furnace.

a)

an enclosed chamber in which heat is produced

b)

an equipment to conveys fluid between location

c)

a pressure vessel

d)

an enclosed chamber in which cool the system

58.

If a boiler is generating 20,000 lb/hr of steam, it must be supplied with ___ lb/hr of feedwater

a)

10,000

b)

20,000

c)

30,000

d)

40,000

59.

One pound of water is needed to produce ___ of steam

a)

1 lb

b)

3 lb

c)

144 BTU

d)

970.3 BTU

60.

In a feedwater system, the ___ valve is located closest to the shell of the boiler on the feedwater line so that the check valve can be repaired without draining (dumping) the boiler

a)

Blowdown

b)

Manual Reset

c)

Stop

d)

Automatic Non-Return

61.

Draft is ___ caused by a difference in pressure between two points

a)

The Balance of Pressure

b)

The Flow of the Air or Gases of Combustion

c)

A Type of Back Pressure

d)

The Stack Height

62.

Natural draft is a result of temperature differences between ___

a)

Fuel Oil and Air

b)

Burning Coal and Sulfur

c)

Air and Gases of Combustion

d)

Fuel Oil and Gases of Combustion

63.

Water weighs approximately ___ lb/gal

a)

2.5

b)

6.4

c)

8.3

d)

10.2

64.

Induced draft is produced by pulling air through the boiler furnace with a fan located in the ___

a)

Breeching

b)

Inlet Damper

c)

Combustion Chamber

d)

Economizer

65.

In a fuel oil system, the purpose of duplex strainers is to ___

a)

Isolate The Fuel Oil System in the Event of a Fire

b)

Remove Water From The Fuel Oil

c)

Prevent Return Flow To The Tank

d)

Permit One Strainer To Be Cleaned While the Other Is In Service

66.
What is important to do before the burner is ignited?
a)
flush the firebox thoroughly with diesel
b)
flush the firebox thoroughly with air
c)
rinse the igniter electrodes with feed water
d)
lower the temperature in order to get a better mix of water
67.

Which is a GLOBE VALVE

a)
b)
c)
d)
68.

Which is a CHECK VALVE

a)
b)
c)
d)
69.

Which is a GATE VALVE

a)
b)
c)
d)
70.

To prevent failure from pressure over the MAWP, all steam boilers must be equipped with at least one ___

a)

Safety Valve

b)

Blowdown Valve

c)

Gauge Glass

d)

Feedwater Heater

71.

Safety valves are designed to ___

a)

Open Slowly to Prevent Water Hammer

b)

Pop Open

c)

Open Only By Hand

d)

Be Opened by Pressure Controller

72.

When testing a safety valve manually, there must be ___

a)

At Least 75% of the Safety Valve Popping Pressure on the Boiler

b)

No Boiler Pressure

c)

An Inspector Present

d)

A Pressure Greater Than the Safety Valve Popping Pressure on the Boiler

73.

Any repairs to the safety valve must be done by the ___

a)

Chief Engineer

b)

State Inspector

c)

Manufacturer-Authorized Representative

d)

Maintenance Department

74.

A(n) ___ test is used to test the relief capacity of a safety valve

a)

Accumulation

b)

Try Lever

c)

Blowdown

d)

Bench

75.

___ pressure is the pressure caused by the weight of the column of water

a)

Pump

b)

Hydrostatic

c)

Steam

d)

Suction

76.

A steam pressure gauge must be protected by a siphon to prevent ___

a)

Steam From Entering the Mud Drum

b)

Boiler Pressure From Damaging the Gauge

c)

Air From Entering the Bourdon Tube

d)

Steam From Damaging the Gauge

77.

The correction factor for hydrostatic pressure is ___ psi per vertical foot

a)

0.433

b)

8.3

c)

14.7

d)

34.5

78.

During boiler inspection, the main steam stop valves are ___

a)

Left Fully Open

b)

Closed, Locked, and Tagged

c)

Left Partially Open

d)

Replaced With Globe Valves

79.

A main steam stop valve should be a gate valve because a gate valve ___

a)

Can Be Opened in 1/4 Turn

b)

Can Be Used as a Throttling Valve

c)

Offers No Resistance to the Flow of Steam

d)

Does Not Have To Be Fully Open

80.

A Safety Valve Must Be Capable of Discharging All the Steam Without the Pressure Increasing More Than __% Above the Maximum MAWP

a)

1

b)

6

c)

14.7

d)

25

81.

Hard water is unfit for use in boilers for “steam raising” because

a)

its boiling point is higher

b)

steam generated at a high pressure

c)

it leads to scale formation inside the boiler

d)

water undergoes decomposition in to oxygen and hydrogen.

82.

Hot water boilers are reliant on these to move heat through the system?

a)

Steam Traps

b)

Pipe

c)

Pumps

d)

Natural Selection

83.

The purpose of the flame sensor in a flame scanner is to prove ___.

a)

only the pilot

b)

only the main flame

c)

both the pilot and the main flame

d)

the proper boiler water level

84.

What is the name of this type of heating system

a)

Two pie

b)

Reversed return

c)

One pipe

d)

Secondary circulation

85.

In order to reduce the viscosity of fuel oil, it is necessary to ____.

a)

decrease its temperature

b)

decrease its pour point

c)

increase its temperature

d)

decrease its pressure

86.

What is the maximum temperature allowed on all low pressure heating boilers?

a)

200 degrees F

b)

250 degrees F

c)

212 degrees F

d)

175 degrees F

87.
what component does this symbol represent?
a)
Single check valve 
b)
Double Check Valve 
c)
No Check Valve 
d)
Any Check valve 
88.

Name the two types of drafts used during the combustion process.

a)

Natural draft and mechanical draft

b)

hot draft and cold draft

c)

set it and forget it. Let it rip tatter chip

d)

Prohibited draft and inhibited draft

89.

What is the official ASME letter stamp used to denote low pressure heating boilers?

a)

L

b)

H

c)

B

d)

P

90.

If a steam trap continues to blow through, what condition occurs?

a)

Steam will vent from the condensate tank.

b)

Steam will vent from the radiator.

c)

The temperature will increase.

d)

The safety valve will pop open.

91.

What ASME code section is used for the care and operation of heating boilers?

a)

Section VI

b)

Section V

c)

Section IV

d)

Section III

92.

What type of boiler is a Horizontal Return Boiler (HRT)?

a)

fire tube boiler

b)

water tube boiler

93.

What is the minimum penalty for not posting your license?

a)

$5000

b)

$500

c)

$100

d)

$1000

94.

A low pressure boiler has a MAWP up to ______ psi.

a)

5

b)

15

c)

30

d)

60

95.

The unit of measurement a compound pressure gauge uses to measure pressures below atmospheric pressure is...

a)

inches of mercury

b)

inches of water

c)

pounds per square inch

d)

pounds per square inch gauge

96.

How often should a water column be blown down?

a)

once each shift

b)

daily

c)

weekly

d)

monthly

97.

In low pressure steam boilers, the lowest visible part of the gauge glass must be placed a minimum of _____ above the lowest permissible water level.

a)

1/2 inch

b)

1 inch

c)

3/4 inch

d)

2 inches

98.

The level of the water in a _____ shows the water level in a boiler.

a)

condensate return tank

b)

feedwater tank

c)

gauge glass

d)

blowdown tank

99.

A ____ is a pipe fitting with plugs that can be removed that will allow for cleaning and inspection of piping.

a)

baffle

b)

boiler cross tee

c)

vent

d)

diverter fitting

100.

When blowing down the water column, how long should you leave the valve open to allow water and any sludge/sediment to be discharged?

a)

1 week

b)

5-10 seconds

c)

5-10 minutes

d)

30 seconds

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