Deck 21: Industrial Process Piping

Question 1

What type of steel pipe withstands high temperatures?

Answer 1

Stainless steel pipe withstands high temperatures.

Question 2

What is placed between two orifice flanges, and what is its function?

Answer 2

. The orifice plate is a flat disc with a small hole drilled in its center. As fluid flows through the hole in the orifice plate, a pressure differential is created on either side of the plate. This differential can be read on the pressure gauge.

Question 3

What is one of the major drawbacks of the globe valve? 59728_ch21_EOC_ptg01.indd 1 03/02/16 10:36 am

Answer 3

. The internal design of the globe valve creates a high flow resistance, leading to a significant pressure drop through the valve. Body pockets in the valve are not drained when the flow is stopped.

Question 4

What type of pipe is commonly used with a bell and spigot connection?

Question 5

What type of pipe is best used for hydraulic lines in automo- biles and aircraft?

Question 6

What type of pipe is one of the most corrosion proof?

Question 7

On what type of pipe is solvent welding used?

Question 8

When is a weld-neck flange used?

Question 9

Define NPS.

Question 10

What is the meaning of "pipe schedule number"?

Question 11

What is the difference between plumbing and piping?

Question 12

Name two types of on/off valves.

Question 13

What is one of the major uses of cast iron pipe?

Question 14

What is steam tracing?

Question 15

In what two forms is piping drawn?

Question 16

What provides the seal in a flanged connection?

Question 17

How does butt welding differ from socket welding?

Question 18

What designations do the ASTM and ASME use to classify pipe strength?

Question 19

Describe the functions of the following pipe fittings: 1808 elbow, reducing tee, eccentric reducer, lateral, elbolet, union, and bushing.

Question 20

What type of regulating valve is operated with a one- quarter turn?

Question 21

Describe the contents of a process flow diagram (PFD).

Question 22

What are the benefits of piping models?

Question 23

Why are piping isometric drawings not drawn to scale?

Question 24

What type of check valve is used with a globe valve?

Question 25

What is meant by "fitting-to-fitting"?

Question 26

List at least two items that are controlled by government regulations.

Question 27

Briefly explain the reasons for drawing revisions.

Question 28

Describe a piping isometric.

Question 29

Piping drawings are also referred to as general arrangement drawings (GA).

Question 30

Name the triangle that is normally placed with a revision note on the drawing.

Question 31

Define process vessels.

Question 32

Why are detailed representations of equipment not neces- sary on piping plans?

Question 33

How are pipe length dimensions handled in piping sections?

Question 34

How is a drawing revision correlated with a revision document?

Question 35

When would the double-line method of pipe drawing be used?

Question 36

What is the relationship between piping isometrics and pip- ing spool drawings?

Question 37

When would a piping detail drawing be needed?

Question 38

Describe the process and instrumentation diagram (P&ID) and give the difference between a P&ID and a PFD.

Question 39

Sketch or draw an example of a revision note, including the triangle identified in Question 33, a revision note, and a revi- sion cloud.

Question 40

What type of valve is used to relieve pressure in pipes carry- ing liquids?

Question 41

Give the outside diameter o

Question 42

Give the contents of a spool drawing.

Question 43

Question 44

Describe piping specification.

Question 45

Provide basic guidelines that can be found in a company for the minimum amount of pipe to be run between fittings and valves.

Question 46

Define flange.

Question 47

Briefly describe the scale used and the dimensions placed on a spool drawing.

Question 48

What are markups?

Question 49

Identify the dimensioning system most commonly used in pipe drafting.

Question 50

Give the function of pipe fittings.