Millwright 2Nd Year Gaskets And Piping

Front 1

What constitutes the best seal on flanges

Back 1

Contact surface to contact surface on flat and smooth surfaces with enough force to hold them together and maintain a seal

Front 2

Name two reasons why gaskets move while in place

Back 2

Internal pressure

Bolt load

Front 3

Name four considerations for selecting a gasket

Back 3

Flange finish

Flange face design

Temp

Pressures

Medium to be sealed and fluid compatibility

Front 4

Name four types of blinds commonly found in indsutry

Back 4

Pancake blind

Volute blind

Spectacle blind

Flange blind

Front 5

Which type of blind requires two gaskets while the system is in service

Back 5

Spectacle blind

Front 6

Name five common joint/flange faces found in industry

Back 6

Flat face

Raised face

Tongue and groove

Male and female

Ring joint

Front 7

Flat-faced gasket joints are regarded as confined joints because the gasket is not allowed to flow freely

Back 7

False; the gasket can be squeezed out

Front 8

Flat-faced gaskets are used for high pressure conditions

Back 8

False; they would push out

Front 9

In regards to raised face gasket joints, what are the two dimensions of the raised face that are related directly to pressure

Back 9

1/16 inch for low pressures

1/4 inches for higher pressures

Front 10

The tongue and groove joint is considered a totally confined joint

Back 10

True

Front 11

You must remove all the flange bolts on spiral-wound gaskets in order to facilitate the gasket removal

Back 11

False; only half the bolts need to be removed

Front 12

You cannot find metallic gaskets on engine heads

Back 12

False; they are commonly used for their strength

Front 13

Name the three common solid metal ring designs

Back 13

Delta

Oval

Octagonal

Front 14

The flanges that use solid metal ring gaskets are harder than the solid ring

Back 14

True

Front 15

On what is nominal pipe size based

Back 15

The inside diameter

Front 16

What is the main limitation of tapered pipe thread joints in piping

Back 16

They loosen when vibration, pressure pulses or thermal movement are present

Front 17

What two things are under stress when piping is not properly aligned or supported before assembly

Back 17

Pipes

Componenets

Front 18

Which tool must you use to remove the burr from the inside of a pipe that you have just cut on a power vise

Back 18

A straight reamer

Front 19

Why is soldering more suitable than welding for joining thin metal parts?

Back 19

Soldering creates much less heat distortion due to heat