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Millwright > Millwright Mix 1 > Flashcards

Millwright Mix 1 Flashcards

1
Q

A screw compressor is decommissioned and in storage. The machine next to it is vibrating, what will happen?

A

False brinelling

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2
Q

Given the amount that you need to shim (.010”). How much do you shim the rack and how much do you shim the pinion?

A

Shim the rack .010”

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3
Q

What would cause wear on a pinion?

A

Overload/too heavy a load

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4
Q

What do you do before rigging/lifting the top cover of a turbine when dissembling?

A

Jacking bolts on top half

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5
Q

What is located on all mobile hoisting equipment?

A

Inspection log

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6
Q

When moving a 48 ton balanced load using 4 2-wheeled casters, how much weight should each caster be rated for?

A

12 tons (48÷4)

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7
Q

What does a 3-axis robot mean?

A

Moves in multiple planes

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8
Q

What is the crane signal for load down?

A

Extend an arm vertically.
pointing a finger toward the
ground, and make small
clockwise circles with the hand.

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9
Q

What is the crane signal for boom down hoist up?

A

Extend an arm outward and
point the thumb downward,
opening and closing the
other fingers.

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10
Q

What is in a break line that causes cancer?

A

Asbestos

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11
Q

Who is responsible for all lock boxes in a plant?

A

Plant supervisor

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12
Q

How do you install a thermal bulb in a container?

A

Thermowell

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13
Q

Vanes destroyed in a pump after high vibration on startup. What is the cause?

A

Rotated the wrong way

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14
Q

What is the most important consideration when using a symmetrical 3 legged bridle?

A

That load can be lifted safely /equal distance to center of gravity

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15
Q

What does a vacuum breaker do on a vessel ?

A

Prevents collapse

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16
Q

How do you mark the center line of a shaft?

A

Use center head scribe line, rotate 90ﾟ scribe again

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17
Q

When moving heavy equipment across a bridge what is used to evenly disperse the weight?

A

Reinforce the bridge

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18
Q

How would you clean your respirator?

A

Dry cloth and alcohol wipes

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19
Q

How do you test a trip valve?

A

Close the valve manually trip

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20
Q

A cylinder is acting erratically. What is the cause?

A

Bent rod

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21
Q

A shaft rotates but has end play what do you do? Where do you shim?

A

Add Shim to one side

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22
Q

How much material to make a guard with 4” x 8” sheets? One or two?

A

2

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23
Q

How would you fix a crack in a shroud?

A

Drill hole in both ends and Weld

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24
Q

How do you change out a sprocket for a smaller one?

A

Shorten chain and align (a to b)

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25
Q

Belt slips on start up, what do you do?

A

Add counterweight

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26
Q

There is moisture in a receiver. What will be the result?

A

Slight decline in direction of flow

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27
Q

A belt is tracking off-center how do you fix it?

A

Adjust tail Pulley

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28
Q

Split housing of a turbine won’t sit properly. How do you fix this?

A

Anti rotation tabs

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29
Q

What is the procedure for commissioning a compressor?

A

Set unloader then start up

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30
Q

What would cause volute to heat up?

A

Intake closed ( runs dry Burns off packing)

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31
Q

When replacing a gear but no new gear is available what would you do?

A

Rotate 180ﾟ and broach a new keyway

If damaged- flip the gear over

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32
Q

How do you move/mount a K ( Tapered sleeve bearing) bearing?

A

Hydraulic nut

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33
Q

When welding 2 precision plates together what would you do?

A

Weld then machine surfaces

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34
Q

Horizontal band saw is jumping. How would you correct the problem?

A

Decrease feed increase coolant

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35
Q

Where do you put a condenser?

A

After receiver

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36
Q

What holds a bearing in the housing?

A

Internal snap ring

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37
Q

How is a compressor normally operated on initial startup?

A

Unloaded

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38
Q

Air dryer adsorption occurs what do you do?

A

Clean desiccant

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39
Q

Clutch is shock loading what do you do?

A

Adjust linkage

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40
Q

You used a connecting link but chain is too long. What do you use?

A

Offset link

41
Q

Where does ground go when welding?

A

Closest to Weld as possible

42
Q

What would cause blue smoke?

A

Worn piston rings (oil)

43
Q

Belt is running off why?

A

Unsquared frame

44
Q

A ladder must be pulled out from the wall by how much?

A

4:1 - 25%

45
Q

What is the angle on a prick punch?

A

30 - 60ﾟ

46
Q

What is the included angle on the center punch?

A

90°

47
Q

How would you repair a bent shaft?

A

Set on V blocks and use hydraulic press

48
Q

The horizontal direction is off by .010”

A

.005 movement

49
Q

Knife blades are what type of balance?

A

Imbalance

50
Q

Vibration measurement

A

Frequency (how much)

51
Q

Given amount of shims required under each foot, which foot do you shim 1st?

A

Highest foot 1st (biggest gap)

52
Q

What do you do before laser alignment?

A

Rough alignment

53
Q

What is the 1st and 2nd step When beginning alignment?

A

Rough alignment then softfoot

54
Q

There is a drop in amps what do you do?

A

Throttle inlet valve

55
Q

True or false is a laser more accurate over a long span?

A

True

56
Q

After rough alignment and softfoot is adjusted what is the sequence of alignment?

A

Vertical angular, vertical offset, horizontal angular, horizontal offset
(VAVOHAHO)

57
Q

What bearing do you use for low lubrication applications?

A

Bushing

58
Q

Where is the fixed bearing located?

A

Next to drive end

59
Q

What is the 1st thing you do before working with grease?

A

Put on gloves

60
Q

Why are U joints installed?

A

For slight angular misalignment

61
Q

A screw compressor bearing discharges. Where do you fix?

A

Fix on high-pressure side

62
Q

What test measures the hardness of something? (Penetration)

A

Rockwell hardness test

63
Q

What is the end procedure when finished welding?

A

Shut off torch, shut off tanks, bleed lines

64
Q

What is a routine maintenance check on a turbine?

A

Check oil

65
Q

Where is the best spot to take a oil sample?

A

Before filter

66
Q

Which valve gets greased?

A

6” rising stem gate valve

67
Q

Sequence valve in hydraulic cylinders is located?

A

Between valves (line c)

68
Q

What are good qualities for mentoring an apprentice?

A

Good knowledge base and communication

69
Q

How do you check the temperature of a bearing?

A

Temperature gun

70
Q

What is the 1st consideration when transferring liquids?

A

Remove Ignition sources

71
Q

How do you find a safe operating temperature of equipment?

A

The manual

72
Q

As a choker sling angle decreases what happens?

A

More stress on the slings

73
Q

What do you do when you’re done working with the torque wrench?

A

Release Tension

74
Q

What do you check 1st after new motor installation?

A

Mag test/rotation

75
Q

What is the procedure for replacing DCV spool ?

A

Lube before installing

76
Q

System that uses past and present equipment history?

A

Predictive

77
Q

System that’s schedules?

A

Preventative

78
Q

What is the procedure for commissioning a reciprocating water cooled pump?

A

Vent jackets, water pressure, start pump, test

79
Q

How much do you feel a gear Box with a oil?

A

Half way up the lower roller

80
Q

A belt worn on one side how do you correct?

A

Align sheaves

81
Q

Cylinder doesn’t fully extend what is the cause?

A

Bent rod

82
Q

There’s hammering in a pump system. What is the cause?

A

Cavitation

83
Q

What sling has the most stretch?

A

Synthetic Web

84
Q

Contact seal leaking what is the cause?

A

Shaft run out

85
Q

What type of oil is used in a compressor crank case?
What type of oil is used in a diesel engine?

A

Non detergent -compressor

detergent - diesel engine

86
Q

What is the procedure for rebuilding a reduction gear drive?

A

clean, mark, take a part

87
Q

In a new system what relief valve do you choose?

A

Maximum system pressure

88
Q

Cylinders are moving slowly why?

A

Internal leakage/pinched line

89
Q

When does a new employee receive orientation?

A

Before work starts

90
Q

Before working on fan blades what is the procedure?

A

Deenergize, lock out tag out, secure blade, fix

91
Q

What causes vibration in an induced fan?

A

Build up

92
Q

A hydraulic pump is operating normally at the right speed but there is no pressure what is the cause?

A

Faulty relief valve spring

93
Q

Setting Up optical level procedure

A

Wooden Tripod

94
Q

Procedure to repair prime mover

A

Clean, match mark, disassemble

95
Q

What is the procedure before grouting?

A

Elevation, rough surface, clean, sole plate, torque 50%

96
Q

What is the procedure to shorten a conveyor belt?

A

Slacken, secure, cut, install, splice, tighten

97
Q

Belt deflection

A

1/64

98
Q

How much can you run up a drive?

A

75%
3/4
Moderate speeds

99
Q

Before working on a fan procedure

A

Deenergized, lock out tag out, block fan blades, etc

Millwright (11 decks)

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