Journeyman Flashcards
(293 cards)
1
Q
what type of air filterlast longest
A
pleeded
2
Q
how to check for voide in grout- tape with a
A
hammer
3
Q
what type of pump should be used in hot fluid
A
center mount
4
Q
how are nuts on tanchinbolt tighten
A
by hand
5
Q
how do you stration a crank shaft
A
hydrolic jack press
6
Q
the most accurate mothod of checking the bearingclearance but also the most time consuming
A
measurement
7
Q
the most common cause of dearing failure is
A
lack of lubrication
8
Q
what is a sentind valve used for
A
a worning device
9
Q
when you want 100% of powerfrom a turbine
A
open extration control valve and close
10
Q
most efficient steam turbin is a
A
condusing turbin
11
Q
what determines the efficiency of a turbine
A
temperature going accrare the turbine
12
Q
what needs to do done to a turbine when taken off a turbine cover
A
remake running key and install assembly key
13
Q
what needs to be done when putting a turbine cover back on
A
remove assembly key and install running key
14
Q
what is mounted on the turbine causing exposed to the internal steampressure for avorring devise
A
sentinel valve
15
Q
buildup can be removed in a turbine using
A
blasting then with walnut shells or rice or high pressure dry ice
16
Q
how is a frichion bearing held in place in a steam turbine
A
molted babbid forms to the key
17
Q
how many lock bearings are on a shaft
A
1
18
Q
where are the defusers located in a gas turbine
A
between the compresser and cumbustion chamber
19
Q
low pressure steam turbin is vibrating to muchhow can it be fixed
A
tighten the lock wier
20
Q
can two universel cuplingsface perfect with each other
A
no cases burnelling of the bearings
21
Q
what is the best method on filling bins or contoners with a convater
A
tripper
22
Q
what is found in the side of the side lodding shoots to overcome this proplem, baffles are installed in the chute to slow material and direct it to the centre of the belt
A
23
Q
what should slherting be made from
A
a softer material
24
Q
if material was falling threw the skeeting you would have to
A
decrease skeeting clearance
25
if a convater is slepping on start up
you add more weight to your counter weight to stop the slipping
26
what is the strongest belt splice
hot volcanizing it can achieving 90% belt strength
27
what is the benfit of side legging
change legging with out removing the belt
28
what would cause a belt to touch the hole way around
incorrect belt splice
29
to maintain efficiency on a drag convator
keep tension on chain
30
a fluid coupling fusible plug
where the plug in the coupling melts on high heat and loses all fluid
31
in a prematic conveying system wear takes place mostly on the inside of the outside radius on pipe bends
the curved section
32
if a gear box is running hot there is probably to much
oil
33
if your using a plumbot outside have it in a bucket of
oil so it cant blow in the wind
34
check the level all around after tightening theanchor bolt nuts to ______of their final torque value
50%
35
how deep do you put a fixed anchor bolts
depth not less then 25D
36
typically foundations are set 3/4 inches to 1 1/2 inches ( 19mm to 38mm) low to allow for grout
37
plan view is looking down, elivatio view is the side view to see elivation
38
welding current can damage bearing. ensure that the bearing is not between theground of the welding machine and the welding location
off set centreroller are used for where there is low head room
39
one section of the beltruns off at all points on the line. the cause of this could be
belt is improperly spliced or out of square to fix this resplice
40
belt slips on starting this can be caused by counter weights are to light to correct this increase the counter weight or increase the screw take up tension
41
when using strobe light to do vibration analyzer you can use it to find the ________
phase angle
42
where can you get machine normal operating vibration
the machines operator
43
to determine the angle between O and T measure the angle with ______
a protractor
44
static unbalance is sometimes called force or _______
kinematic unbalance
45
it is caused when the shaft weight is ______ along the length
evenly distributed
46
the primary purpose of prevention maintance is to
increase production
47
the difference between pretventive and predictive maintance is
when maintance is performed
48
small plant maintance operation s may very upon ______
a logbook (logbook must be with machine to keep record maintance work)
49
Before putting a electric motor to use preform a _________
electrical insulation resistance test
50
the scale of emissivity ranges from _______
0.00 (where there is no emission) to 1.00 (where the object is completely emitting energy)
51
ISO is ?
international organization for standardization
52
where should a oil sample be taken
after the equpment of interest
53
when should you take a oil sample
when the equpment is operating under a load
54
ultrasonic thickness gavging can measure
thickness to a accuracy of 1%
55
when should oil be on a rolling elimant with oil
half way up the lower ballroller
56
how mach should grease be in a rolling elimant
3rd to half
57
what type of impeller is good for long fiber materals
open face
58
what makes the best back fill
crushed concreat
59
best way to lift a turbine is a
spreder bar
60
how do friction bearing self alining
spherical seat
61
what kind of grease goes in a robot
robot grease
62
tools and equipment used to install, diagnose, maintain and repair _______ and __________
robotics and automative
63
When the downward force at C2 is 100lbs and D2 is 2.5 inches, the upward force at C1 will be _______ lbs if D1 = 4 inches
384
64
Add the following decimals and express the answer to three decimal places.
0.4789 + 3.125 + 9.656
13.259
65
What are common materials used as electrical conductors?
Silver, copper, aluminum
66
Large impulse turbines will use what of rotor?
A. Build up rotors
B. Solid rotors
C. Combination of solid and build up rotors
D. All of the above
D. All of the above
67
The shape of a ball bearing is ______ when a load is applied to the ball
Elliptical
68
Not a stress, but the result of stresses
Fatigue
69
The two main estimates
Cost and time
70
What is the primary purpose of preventative maintenance?
Increase production
71
#80 chain is what size?
8/8 = 1 inch
72
What coupling requires lube?
Metal to metal (grind, gear, chain) not metallic disk
73
Where are vibration readings taken from?
HVA - Horizontal Vertical Alignment
74
When do you take an oil sample?
When the unit is running
75
What would cause oil in the gearbox to go milky?
A gearbox constantly starting/stopping can cause condensation and make the oil milky
76
How do you weld long distances without distorting?
Short stitches along seem (tacks/back stepping)
77
How do you shorten a chain sling?
Grab hook
78
60 degree angle between two slings, 12’ long. What is the distance between the I bolts?
12’
79
How do you reverse the flow in a vane pump?
Flip the cam 180 degrees
80
How should packing be staggered if 4 rings are used?
90 degrees
81
What should you do before putting packing in place?
Roll it out to flatten it.
82
A PRV is blowing OFF in the intercooler of a two stage reciprocating compressor, why
The 2nd stage inlet valve is leaking/bypassing
83
If there is excessive heating in a 2 stage reciprocating compressor, what is the issue?
Faulty intercooler (red fins plugged)
84
How do you fix tears in a conveyor belt.
Belt clips (bolt type fasteners)
85
How high should a personal work platform be before it needs guardrails?
1.22m / 4 feet
86
How high should a hand rail and mid rail be?
4 feet and mid rail half down at 2 feet
87
What kind of oil goes in the crank case of a compressor?
Non-detergent. Detergent oil can cause carbon build up/hot spots
88
If a lobes pump output volume decreases over time, how do you fix it?
Decrease clearance
89
What is the result of heating up an HS8 bit
to cherry red and dipping it in oil?
Hardening
90
What does ‘2’ in EP2 grease mean?
Penetration (the higher the number (up to 6), the harder the grease
91
Chatter in gearbox?
Broken tooth
92
High chrome levels in oil, why?
Low oil level. Heat causes ball bearings to wear prematurely
93
What type of welding would you use for a large gap?
Mig
94
What is the general practice for filling a hydraulic tank for the first time?
Offline filter/ filter cart
95
How often should you inspect fall arrest equipment?
Before every use
96
If a belt is travelling off centre, how do you adjust it?
Adjust tail pulley
97
You find a bent eyebolt, what do you do?
You take it out of service and destroy
98
During a lift, there is a signal man designated for the operator, the load is heading toward a power line. What do you do?
Emergency stop
99
What is the best way to lift a 20T turbine rotor?
Spreader beam
100
A 3 phase motor fails to operate properly and starts to hum, it’s likely
A blown fuse
101
How do you detect bird caging?
When there is no load
102
What is the best way to detect surface cracks in a weld?
Dye penetrant
103
Crane signal for boom down?
Thumb down
104
Crane signal for stop (Non emergency)
Arm in and out
105
What do you use to store machine data?
Computer database
106
What should you do during a large lift to ensure the safety of people?
Red tape area and remove all no-lift personnel
107
What do you do to a drill bit before drilling brass?
Brassing the drill - flattening the cutting edge
108
What do you use if you don’t have a clamp to pull chain ends together?
Lace
109
If you have contaminants outside a gearbox, what seal do you use to keep the contaminants out?
Double lip seal
110
What do you do for commissioning a new piece of equipment if you have no manufacturer specs?
Check oil level and jog
111
The most efficient way to keep a gearbox lubricated?
Scrapers and troughs
112
How do you prevent material from getting trapped between the belt and the tail pulley?
Install v-plow just before the tail pulley (inside of belt)
113
How is a gearbox sized?
Vertical distance between shafts
114
Oil level on a bearing?
Half way up the lowest rolling element
115
When replacing skirting on a conveyor
Use a softer material than belt - no clearance gap
116
How do you shorten a type of chain?
A chain breaker
117
How do you detect soft foot using a dial indicator?
Tighten all feet, set up dial on one foot, then loosen that foot.
118
What should you do with a sling if it has been overloaded?
Remove it from service
119
What should be done before coupling a prime mover to a pump?
Check rotation
120
How do you measure wire rope?
By the largest diameter
121
How should you torque a flange or bolts?
Top, bottom, criss-cross
122
If you find metal shavings under the chain/sprocket
Check for misalignment or wearing
123
If too much oil in the sight glass when machine is running
Monitor for excessive heat
124
What is the size of a keyway in relation to a shaft?
1/4 shaft diameter
125
While commissioning a water cooled centrifugal compressor
Check rotation, check cooling water
126
What type of shackle do you use for lifting people?
Safety type, anchor style, 4 part
127
How is a shackle sized?
By the body
128
Eyebolt angles
Shouldered = 45degrees
No Shoulder = no angle
129
If you are lifting a heavy load horizontally with a crane you should use
A snatch block
130
An internal leak in the cylinder means
The piston seals are gone/bad
131
What types of packing needs a support ring?
U-ring packing
132
What packing is unbalanced?
Cup packing
133
What does breakdown maintenance cause?
Causes workers to react in a breakdown situation or increases production cost
134
When determining pipe strain, where should there not be any strain?
Across the couplings
135
What is reverse polarity on a welding machine?
Electrode positive
136
What should you do when transferring flammable liquid from one container to another?
Grounded/remove all ignition sources
137
When commissioning a food system/pump, what do you use?
Potable water (drinking water) or the product
138
If a sling hits against a wall, what do you do after?
Inspect the sling
139
What valve is all the way open on an oxygen/acytelene set up
Oxygen
140
Before alignment is complete, what is done to speed up the process?
Pre-alignment checks/rough alignment
141
After starting a hydraulic pump, it sounds like rocks in the line, why?
Aeration/aerated
142
Commissioning in starting a compressor, what is done?
Run unloaded for half an hour
143
What do you do when commissioning a refurbished fan?
Balance
144
What maintenance program follows a schedule?
Preventative
145
When setting up a baseline for a machine, what is done?
Vibration analysis/pressures/temperatures
146
What does a receiver always need?
Max pressure relief valve
147
What is the proper way to clean a bearing?
Solution, hot soapy water
148
What is the first thing you do when starting up an axial piston pump?
Barr over, check rotation, prime
149
What is a turnbuckle used for?
Adjusting length or levelling
150
If a diaphragm pump is not releasing enough discharge, what do you do?
Turn up the air pressure
151
What type of oil is used in a 4 stroke internal combustion engine?
Detergent oil
152
When is a wedge socket used?
To easily and quickly attach rope
153
A conveyor is turned on but not moving, why?
Trip cable is engaged
154
What do you do if there is no line of sight between the operator and load / signal person?
Get a second signal person
155
What type of rigging would you use to lift a bundle of piping?
Double wrapped choke
156
Labyrinth seal is leaking, what is the cause?
Plugged drain
157
What is the purpose of flux when brazing?
It prevents oxidation
158
How wide is the join of a 10 ply belt?
Width of belt at least
159
You install a new chain but do not have a new sprocket, what do you do so no speed is lost?
Reverse sprocket
160
How do you change an insert in a coupling?
Loosed one set screw, slide back, replace insert, slide back, and re-install set screw
161
How do you inspect a hook on a daily inspection?
Visual
162
A wire rope has 3 strands broken, what do you do?
Take it out of service/discard
163
What will cause a gear coupling to fail?
Misalignment
164
If a conveyor is going off track, what do you do?
Adjust tail pulley
165
Where do you place a lantern ring in a pump?
Under cooling water gland
166
How many threads are there on a metric micrometer
50Tpi (standard has 40)
167
How do you know when to change the filter on a hydraulic system?
Pressure drop across filter
168
How many years is a hard hat good for?
1 year
169
What do you do with a job site container that is not marked?
You dispose of it
170
Last step once pump is reassembled?
Barr over
171
Pump starting up with high amperage draw, why?
Packing too tight
172
How to increase efficiency in a horizontal chain?
Correct adjustment to 2% center to center
173
What is the clearance in gears?
Backlash
174
What is used to check or patterns on gears?
175
How do you know when to change the filter on a hydraulic system?
Pressure drop across filter
176
How many years is a hard hat good for?
1 year
177
What do you do with a job site container that is not marked?
Dispose of it
178
Last step once pump is reassembled?
Barr over
179
Pump starting up with high amperage draw, why?
Packing too tight
180
How to increase efficiency in a horizontal chain
Correct adjustment to 2%, center to center
181
What is the clearance in gears?
Backlash
182
What is used to check backlash or mesh patterns on gears?
Dial indicators
183
What is the procedure for placing a sole plate on a footing?
Establish centreline, clean bottom, clean shim area on plate and concrete, prepare anchor bolts, install base plate
184
Procedure for putting a new gasket in a piping system
Wet the gasket
185
Procedure to change motor on indirect drive?
Snug jacking bolts on one side and remove/replace
186
Procedure to take apart gearbox
Drain oil, clean, match mark, disassemble
187
Checking shaft movement is called:
Concentricity
188
If a piece of steal does not fit into the lathe, what do you do?
Flip jaws
189
If a DCV valve is not working, what do you check first?
Solenoids
190
Pump has discharge flow but is not filling tank, why?
Blocked vent/drain open/blocked strainer or discharge
191
What is the purpose of a baffle?
Places between inlet and outlet Let’s cool, let’s contaminants settle, let’s air escape
192
Law of conservation of energy:
Energy cannot be created or destroyed, it can only change form
193
What is the cracking pressure of a check valve?
3-5psi
194
After honing/deglazing what do you use?
Warm, soapy water
195
How many watts does a standard 8hp motor have?
1hp =746watts, 8hp = 5968watts
196
What is the tie wire used for in turbines?
Joins blades to stop vibration
197
What direction do you tighten a cam ring in a bearing?
Direction of shaft rotation
198
Steps to setting clearance in a centrifugal pump:
1. LOTO
2. Move impeller to the rear
3. Assemble pump
4. Set up dial and move impeller forward until it touches inlet
5. Zero dial
6. Move impeller back to required clearance
199
Which bearing on a shaft gets stabilizer rings?
The fixed bearing (the one closest to the coupling)
200
What do you do with labyrinth/lip seals for bearings?
You grease them
201
When cleaning electrostatic precipitator, what do you clean?
The plates
202
A bearing with a “K” denotes what?
Tampered bearing
203
What’s the leading cause of bearing failure?
Lack of lube
204
Which gearbox can you not run in reverse?
Single start / worm drive - single start
205
Minimum amount of teeth to make contact in V-belt
6 teeth
206
How much deflection should be on a belt?
1/64” deflection for every inch of length
207
What type of wire rope should not be used on a single part lift!
Lang
208
What type of rope floats?
Poly
209
What is the strongest type of natural rope?
Hemp
210
Of a pneumatic actuator is hammering out on it’s extension stroke, what should you do?
Adjust cushions
211
In what state should a hydraulic Jack be before storing?
Fully retracted (pressure released and fully de-energized)
212
What is the start-up procedure when installing a steam turbine?
Start the jacking pump to lift the turbine, start turning the gears, start aux oil pumps, and shut down jacking pump and preheat turbine.
213
A stationary diesel engine is overheating on a hot day, why?
Damaged rad fan
214
What is the diameter of #6 machine screw?
0.138”
215
A pump is operating normally, the auction side filter is changed with a filter of the same micron the pump rattled at start up, why?
Aeration (air in the line)
216
What is the sequence for repacking a pump?
Clean, cut, roll them out to flatten, install by staggering by 90 degrees, hand tight nuts, start, adjust to 40-60 drips per minute
217
Bearing is running hot due to excessive load, what is done to correct this problem?
Bigger bearing
218
What is adjusted when a chain conveyor system is jumping?
Adjust chain tension
219
Which points are used to triangulate when checking squareness to centreline?
Longest points and centreline
220
A hand grinder is sparking in the case, what do you do?
Change brushes and clean
221
What do you use to measure between the O vector and the T vector?
A protractor
222
Purpose of a strobe light?
To find the phase angle
223
What is the symbol for double insulated?
A square inside another square
224
Long horizontal pull with a crane use
Snatch block
225
Long horizontal pull without a crane use
A tirfor
226
Chain on chain hoist that can be replaced
Hand line/pull chain
227
Black smoke from a diesel engine indicates what?
Turbo, dirty oil filter
228
Roller bearings tightened to half the initial clearance
Ball bearing La tightened until slight drag
229
Where do you fill the oil for preservation?
All the way full (storage)
230
Which bearing is fixed?
Closest to coupling, drive end
231
Rings close to the bearing are?
Stabilizer rings
232
For filling with grease:
Slow turning housing 1/2 full
Fast turning housing 1/8 full
233
What gets oil to where it needs to be?
Troughs and scrapers
234
If pushing on a bearing, do you push on the inner or outter race?
Inner race
235
What is the radius put on the end of the shaft for?
Easy bearing/hub install
236
What is the shoulder put on the end of the shaft for?
Strength
237
What do you heat a mandrel to before pouring babbitt?
120 degrees Celsius
238
What temperature do you pour Babbitt?
350 degrees Celsius (pour point)
239
Which coupling does not have the hub removed?
Donut (not clamped type though)
240
How are couplings/clutches/brakes and transmissions rated?
HP/RPM
241
If a clutch wears an outer diameter, what is the main cause?
Misalignment
242
Mechanical clutch doesn’t disengage, what do you do?
Linkages need to be adjusted
243
If a clutch is slipping, what is the reason?
Springs are weak
244
How do you reduce vibration in a chain?
Use 2 smaller chains
245
Huntington Sprocket
Has uneven number of teeth and a couple pitch chain
246
Chain slack
1/4 of pitch if vertical. 2% if horizontal, tighter if reversing
247
A high speed chain uses what line system?
Mist
248
If belt keeps squealing
Replace
249
To check for chain stretch
Compare to a new chain
250
What is the reason a belt rolls over on a sheave, why?
Worn sheave
251
What kind of sag does a laser not allow for?
Bracket sag
252
What is a worm wheel made of?
Brass
253
Bracket sag is always
A negative number
254
Class 1 light = visible
Class 2 light = invisible
255
What do you do if a fan is running hot?
Increase RPM’s
256
Crown on a crown pulley has a taper of what?
1/8” per foot
257
How do you pressure test a process tank?
Hydrostatic
258
To fill bins under a conveyor, what do you use?
Tripper
259
A tank should be how many times the delivery flow rate of the pump?
2-3
260
How do you find the centre of a shaft?
Centre head and ruler (centre square)
261
A pump with a suction head means what?
Higher discharge
262
Where do you place a scraper on a belt?
Scraper at head pulley
263
What type of sling would have the least amount of electricity?
Wire or chain
264
EP oil in hypoid gears?
Extreme pressure
265
Replacing reed valve on engine?
Like a check valve, placed between carb and crankcase
266
Trip on a governor?
On steam turbine, bring up to speed and manually trip it.
267
Babbitt bearing?
Relieve first and Chamber
268
When replacing a cover on a bearing on a boiler feeder, top half of cover not seating, what do you do?
Turn 180 degrees for dowels to line up
268
What is the name of a pressure gauge on inlet of a compressor?
Manometer
269
A motor conveyor kicks out often, why?
It is overloaded
270
When commissioning a long line of machinery, what order?
Last to first
271
After deburring a piece of metal, what do you do next?
Measurements
272
Bucket dump jumping and spilling, why?
Belt/chain loose, sprocket missing teeth
273
80 grade pipe, where do you check for deterioration?
Outside corners (elbow)
274
Rotation of camlock?
With direction of rotation
275
Locking on a bearing?
Internal snap ring
276
A Jack to use from a distance
A portable jack
277
Vertical welding arc?
Arc length short as possible (bottom to top)
278
Thermal growth, how to you shim motor to offset growth?
Set motor higher
279
As temperature of oil increases, viscosity _______
Decreases
280
Pneumatic diaphragm pump fails to deliver flow at out put, even when the diaphragm is in good condition, why?
Debris between diaphragm and casing (housing)
281
How do you maintain alignment when changing out a motor on a pump with jacking bolts?
Leave one side of the jacking bolts tight, slack off other side, replace motor, tighten slack side
282
How to replace a spider from a coupling?
Slack one hub, move back, replace spider and retighten
283
Steps to fill accumulator:
-turn the gas chuck in until the pressure reads on the gauge
-do not turn gas chuck all the way as it will damage the valve
-slowly open the nitrogen bottle valve
-let the accumulator fill slowly
284
285
Pipe anchor question, what do you do before grouting?
Level
286
Coupling in a condensate pump fails, what is the reason?
Didn’t account for thermal growth (heat/hot)
287
Bearing is constantly failing on an indirect drive pump, why?
Drive belt too tight
288
How do you check for vibration?
Transducer
289
When starting an axial piston pump, what is the first step?
Prime pump
290
What do you need to mount a tapered bearing on a straight shaft?
Adapter sleeve
291
Engine has sat idle for a long period, excessive cranking before starting, what is the cause?
External injector leakage/faulty glow plugs
292
Efficiency of a pump decreases, what is the cause?
Worn rings/ increase clearance in wear rings.
