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ADVANCED ENGINEER TRAINING I (Third-Class Upgrade) > First Quarter Exam > Flashcards

First Quarter Exam Flashcards

1
Q

The maximum size bottom blowdown valves on boiler is ______”

1

1 1/2

2

2 1/2

A

2 1/2”

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2
Q

Boilers in battery equipped with_____must have two main steam stop valve and a free-blowing drain between them

Common blowdown lines

Manhole openings

Handhole opening

Continúes blowdown

A

Manhole openings

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3
Q

Continues blowdown line is located ______

At the NOWL

in the mud drum

In the flash tank

In the steam and water well below the NOWL

A

In the steam and water well below the NOWL

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4
Q

A manometer is read in________

Inches of water

Psig

Psia

None of the above

A

Inches of water

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5
Q

The boiling point of water will_____with an increase in pressure

Not change

Be raised

Be lowered

Raised until 212

A

Be raised

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6
Q

The range of a pressure gauge should be twice the safety valve setting, but not less than______times the safety valve setting

1

1 1/4

1 1/2

1 3/4

A

1 1/2

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7
Q

The superheater drain is used to______

Remove gases from the superheater

Remove condensate

Relieve pressure

Establish steam flow

A

Establish steam flow

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8
Q

Waterwalls tubes protect the refractory and_____

Increase boiler heating surface

Act as stays for tubes sheets

Allow the operator to blowdown while steaming

Help control water circulation

A

Increase boiler heating surface

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9
Q

Steam at 250 psia and 400f i considered

Supersaturaed

Saturated

Superheated

A

Saturated

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10
Q

The safety valve setting on the steam and water drum is _______the superheated safety valve

Lower than

Higher than

The same as

None of the above

A

Higher than

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11
Q

Sensible heat is heat_____

Changes a substance state but not its temperature

Changes a substance temperature and its state

Changes a substance temperature but not its state

A

Changes a substance temperature but not its state

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12
Q

Extra heave pipe must be used on blowdown line when the steam pressure exceeds______ psi

15

100

125

200

A

125 psi

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13
Q

A safety valve on a boiler pops___

When the boiler reaches its working pressure

Between the working pressure and the MAWP

At 15 psi

At 150 psi

A

Between the working pressure and the MAWP

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14
Q

As the steam pressure in the boiler increases there is a corresponding increase in the

BHP

water level

Volume of steam

Temperature of steam and water

A

Temperature of steam and water

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15
Q

Normally a water column and gauge glass should be blowdown

At the start of a shift and when ever in doubt of the water level

At least once at day

When ever the water level is high

A

At the start of a shift and when ever in doubt of the water level

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16
Q

Baffles are used in the steam and water drum of watertube boilers to ______

Provide better circulation

Prevent water carryover with the steam

Clean the steam

A

Prevent water carryover with the steam

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17
Q

The tubes in a watertube boiler are fastened by

Expending and welding

Rolling and expanding in drums and headers

Rolling and beading in drums and headers

Ring welding

A

Rolling and expanding in drums and headers

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18
Q

Heat that changes the temperature of a substance but not its state is_____

Latent heat

Heat of evaporation

Sensible heat

Heat of fusion

A

Sensible heat

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19
Q

If a boiler is equipped with an automatic return valve. It must be

On the bLowdown line

On the feedwater line next to the boiler

The valve closest to the boiler shell

Between the main steam stop valve and header

A

The valve closest to the boiler shell

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20
Q

A broken baffle on a watertube boiler would cause

Tubes to leak

Increase in steam pressure

Increase in chimney temperature

Carryover

A

Increase in chimney temperature

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21
Q

The minimum size manhole is_____

11” x 11”

12” x 12”

11” x 13”

11” x 15”

A

11” x 15”

22
Q

Cast iron water columns may be used for pressures up to______psi

100

250

300

500

A

250 psi

23
Q

All high pressure boilers must have more than one method to determine water level. A gauge glass and_____

Low water fuel cutoff

Whistle valve

Water columns

Try cocks

A

Try cocks

24
Q

Water walls should be blowdown

Daily

Weekly

When the furnace is cool

Once every six month

A

When the furnace is cool

25
Q

An automatic non return valve is used with

Engine

Pump

Boiler

Condenser

A

Boiler

26
Q

______gauge glasses are used on boilers with pressure exceeding 250 psi

Tubular

Flat

Cast iron

None of the above

A

Flat

27
Q

The dry pipe is located in the_____

Upper part of the steam and water drum

Superheater outlet header

Main steam line

Line before the turbine throttle

A

Upper part of the steam and water drum

28
Q

Boiler in battery equipped with manhole openings must have_____according to the ASME code

Two main steam stop valves

One main steam stop valve

No valves between boilers and headers

Boilers in battery have no manhole openings

A

Two main steam stop valves

29
Q

The boiler superheater raises the temperature of the ______

Feedwater

Gases of combustion

Air for combustion

Steam leaving the boiler

A

Steam leaving the boiler

30
Q

The range of a boiler pressure gauge must not be less than______times the safety valve setting

1 1/2”

2”

2 1/2”

3”

A

1 1/2”

31
Q

Boiler safety valves capacity must be such that the steam pressure can never go higher than______%

4%

5%

6%

10%

A

6%

32
Q

The best time to blown down a boiler is when it is

At its peak load

At 75% of its peak load

At its lowest load

Bein taken out of service

A

At its lowest low

33
Q

The superheater drain______the superheater

Removes gases from

Removes condensate from

Relieves pressure from

Establishes a steam flow through

A

Establishes a steam flow through

34
Q

A flash tank_____

Acts as separator

Recovers steam and condensate

Controls blowdown

Recovers low pressure steam

A

Recovers low pressure steam

35
Q

A slow opening valve requires_____ complete turns to be fully opened or close

Three

Five

Seven

Nine

A

Five

36
Q

According to the ASME code the maximum size of the boiler bottom blowdown line is_____

1 1/2”

2”

2 1/2”

3”

A

2 1/2”

37
Q

When testing the safety valve by hand______

There should be no pressure on the boiler

Notify the boiler inspector

The boiler should be at least 75% of popping pressure before testing

A

The boiler should be at least 75% of popping pressure before testing

38
Q

An automatic nonreturn valve is found on the_____

Discharge size of the feedwater pump

Inlet line to the open feedwater heater

Boiler main steam line between the boiler and the main stop valve

A

Boiler main steam line between the boiler and the main stop valve

39
Q

A Broken baffle in a watertube boiler causes

Smoke to come from the chimney

A rise in chimney temperature

A drop in chimney temperature

A

A rise in chimney temperature

40
Q

A safe maximum water concentration of contaminates in steam generator serving low makeup plants is maintained by______

Daily blowdown

Continues blowdown

Surface blowdown

A

Continues blowdown

41
Q

An automatic nonreturn valve is used with

Engine

Pump

Boiler

Condenser

A

Boiler

42
Q

Draft is measured with a______

Pyrometer

Hydrometer

Manometer

Pressure gauge

A

Manometer

43
Q

A dry pipe_____

Removes moisture from the steam

Connects the dry drum to the steam and water drum

Increase water circulation

A

Removes moisture from the steam

44
Q

A hot water boiler is rated at 32,000,000 btu’s/hr, the equivalent boiler horsepower is

Divided by

33,000

33,475

  1. 5
  2. 3
A

33,475

45
Q

A steam boiler is rated at 50,000 lbs of steam/hr. What is the boiler horsepower

Divide by

970.3

33,000

34.5

A

34.5

46
Q

A boiler has a pressure of 600 psi and a 3 inch diameter safety valve disc. What is the total force acting on the safety valve

A

.7854 x3x3= times 600 psi

47
Q

How high is a column of water that exerts 42.43 psi on a gauge located at the bottom of the column

Times

A

Times 2.31

48
Q

Before blowing tubes in a boiler equipped with steam soot blowers, you should____

Increase boiler ester level

Decrease the boiler water level

Reduce the forced draft fam speed

A

Increase the boiler water level

49
Q

Bicolor water level indicator connected directly to the boiler drum operates on the principle of

Different refractive properties of steam

Special insoluble

Indicating fluids

A

Different refractive properties of steam

50
Q

The purpose of the mica used in a gauge glass assembly is to prevent______the glass

Overheating of

Light refraction in

Etching of

Leakage from

A

Etching of

ADVANCED ENGINEER TRAINING I (Third-Class Upgrade) (12 decks)

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