Rim and Face Shaft Alignment, Grouting, Levelling and Anchoring

Question 1

Runout refers to?

Answer 1

Eccentricity

Question 2

Misalignment can cause?

Answer 2

• equipment damage
• vibrations
• lost of production

Question 3

What are the three types of misalignment?

Answer 3

• offset
• angular
• combination

Question 4

The most common type of misalignment is?

Answer 4

combination

Question 5

The practice of lining up the shafts of two machines that are or will be coupled to each other is called?

Answer 5

Collinearity

Question 6

Along with misalignment caused by pipe to a machine connection and weight of fluid in the pipe could cause pipe strain as well as

Answer 6

Thermal change expansion or contraction

Question 7

What are the three basic types of couplings

Answer 7

• rigid
• flexible
• special purpose

Question 8

Use elastomer shims to

Answer 8

correct angular soft foot

Question 9

What is pipe strain and why is it important to correct it?

Answer 9

is when piping attached to a piece of equipment and the weight stresses the machine housing

Question 10

Machines have various type of seals such as

Answer 10

• lip
• labyrinth
• mechanical

Question 11

How does end float affect a rim and face alignment/

Answer 11

it causes face readings angularity to be unreliable

Question 12

The running speed of the equipment and the style of coupling would dictate

Answer 12

how accurate the alignment would have to be

Question 13

what is the maximum number of shims that can be placed under each foot?

Answer 13

four or fewer

Question 14

What is bolt bound?

Answer 14

its a situation where the hold-down bolts do not allow sufficient horizontal movement

Question 15

If a dial indicator is set up to read on the outside (backside) of the coupling face instead of the inside?

Answer 15

Only the sign of the readings changes

Question 16

You are performing an alignment and find one machine has coupling runout, how do you compensate for this?

Answer 16

Rotate both machines shaft together

Question 17

The correct term for the condition whereby a machine does not sit properly on all its mounted feet is?

Answer 17

soft foot

Question 18

When doing a vertical alignment, a positive face reading at the six o’clock position indicates?

Answer 18

the coupling gap is smaller at the bottom

Question 19

When the dials are mounted, which machine shaft should they be reading off?

Answer 19

the fixed machine

Question 20

To correct for vertical misalignment you would?

Answer 20

Add or remove equal amount of shims under the front legs and add or remove different but equal amount of shims under the back leg of the MTBM

Question 21

After alignment is completed jacking bolts should be?

Answer 21

left loose when the alignment is completed

Question 22

What are vibrations isolators?

Answer 22

they are use to prevent vibrations

Question 23

What is the most precise spirit level?

Answer 23

the master precision level

Question 24

What are the two types of grout used in machine installations?

Answer 24

• cement grout mixture

* polymeric

Question 25

Cement base grouting can be worked after curing for?

Answer 25

7 days

Question 26

Cement grout reaching full strength after?

Answer 26

28 days

Question 27

Grout is so stiff that formwork is not require?

Answer 27

false- form prevents the grout from slumping until it sets properly

Question 28

Should you apply grout to a smooth concrete surface

Answer 28

No, Never

Question 29

Do not place cement base grout mixtures below what temperature?

Answer 29

5°C

Question 30

How would you compensate for voids or air pockets remaining under the base?

Answer 30

you need to drill small holes through the base plate in order to release trapped air and prevent voids

Question 31

What are the disadvantages of polymeric grout?

Answer 31

*synthetic grouts have a shelf life of only one year, and a usable time of only 30 minutes to 1 hour

Question 32

Before grouting, you should torque anchor bolts to?

Answer 32

50% of their final value

Question 33

Whether expandable or non expandable the type of anchor bolt being installed determines the?

Answer 33

type of drill

Question 34

Reference lines are also known as?

Answer 34

* working lines * control lines * datum lines

Question 35

Which anchor is design to accommodate slight adjustment?

Answer 35

flexible

Question 36

Which anchor bolt can you replace easily if you break it?

Answer 36

boxed

Question 37

The presents of voids can lead to?

Answer 37

* the base plate twisting under load * the foundation cracking * soft foot

Question 38

What if you detect a void?

Answer 38

it must be filled

Question 39

What is a wedge?

Answer 39

its a taper piece of steel place between the base and the foundation of the machinery

Question 40

How should thick and thin shims be stacked?

Answer 40

Thicker ones at the bottom and thinner ones at the top

Question 41

Leveling feet are used on?

Answer 41

Small light weight equipements

Question 42

Can you level with a carpenter's level?

Answer 42

No!-- more precision is required

Question 43

A carpenter's level can read an accuracy of?

Answer 43

.020 of an inch

Question 44

A precision or mechanics level has a sensitivity of?

Answer 44

.005 inches per foot

Question 45

A master precision level has a sensitivity of?

Answer 45

.0005 inch per foot

Question 46

What are the three mounting methods?

Answer 46

* base plate or skid * on their own sole plate or steel support * mounted directly on the floor

Question 47

Foundations should rest on?

Answer 47

* firm solid ground such as rock, hard clay and compacted gravel * a footing that covers a large area * and on piles

Question 48

Master precision levels should be picked up by the?

Answer 48

top plate

Question 49

What can affect both plumb bobs and vertical wires?

Answer 49

wind can affect both

Question 50

Which anchor is best suited for the edge of a concrete foundation?

Answer 50

Adhesives

Question 51

Expansion-type anchor bolts are popular for use on?

Answer 51

existing concrete floors and pads

Question 52

If anchor bolts are to be installed before the foundation concrete is poured, what is required?

Answer 52

a template - is required to line up the anchors bolts with holes in the machine base, sole plate or skid

Question 53

Reference lines are established from reference points such as?

Answer 53

* centre line of machinery * elevation from plant * machinery bench mark * existing machine

Question 54

List three basic levelling devices

Answer 54

* Spirit levels * Optical levels * Laser levels

Question 55

What do homemade grouts mixtures tend to do?

Answer 55

they shrink