Chapter Tests
and Problems
ChaPTer 21 IndusTrIal ProCess
PIPIng TesT
INSTRUCTIONS
Answer the following questions with short, complete statements
or drawings as needed.
QUESTIONS
1. What is the difference between plumbing and piping?
2. In what two forms is piping drawn?
3. What is one of the major uses of cast iron pipe?
4. What type of steel pipe withstands high temperatures?
5. What is steam tracing?
6. What type of pipe is one of the most corrosion proof?
7. What type of pipe is best used for hydraulic lines in automo-
biles and aircraft?
8. Define NPS.
9. What is the meaning of “pipe schedule number”?
10. What designations do the ASTM and ASME use to classify
pipe strength?
11. How does butt welding differ from socket welding?
12. What provides the seal in a flanged connection?
13. What type of pipe is commonly used with a bell and spigot
connection?
14. On what type of pipe is solvent welding used?
15. Describe the functions of the following pipe fittings: 1808
elbow, reducing tee, eccentric reducer, lateral, elbolet,
union, and bushing.
16. When is a weld-neck flange used?
17. What is placed between two orifice flanges, and what is its
function?
18. Name two types of on/off valves.
19. What is one of the major drawbacks of the globe valve?
20. What type of regulating valve is operated with a one-
quarter turn?
21. What type of check valve is used with a globe valve?
22. What type of valve is used to relieve pressure in pipes carry-
ing liquids?
23. Why are detailed representations of equipment not neces-
sary on piping plans?
24. When would the double-line method of pipe drawing be
used?
25. How are pipe length dimensions handled in piping
sections?
26. What is meant by “fitting-to-fitting”?
27. When would a piping detail drawing be needed?
28. Why are piping isometric drawings not drawn to scale?
29. What is the relationship between piping isometrics and pip-
ing spool drawings?
30. What are the benefits of piping models?
31. Briefly explain the reasons for drawing revisions.
32. How is a drawing revision correlated with a revision
document?
33. Name the triangle that is normally placed with a revision
note on the drawing.
34. Sketch or draw an example of a revision note, including the
triangle identified in Question 33, a revision note, and a revi-
sion cloud.
35. Describe the contents of a process flow diagram (PFD).
36. Describe the process and instrumentation diagram (P&ID)
and give the difference between a P&ID and a PFD.
37. Piping drawings are also referred to as general arrangement
drawings (GA).
38. List at least two items that are controlled by government
regulations.
39. Define process vessels.
40. Describe a piping isometric.
41. Give the contents of a spool drawing.
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42. Briefly describe the scale used and the dimensions placed
on a spool drawing.
43. Give the outside diameter of 3/40 copper tubing.
44. Pipe is specified by its nominal pipe size (NPS). How is the
NPS for pipe 1/80 to 120 (3–300 mm) specified, and pipe 140
(350 mm) and above specified?
45. Give the function of pipe fittings.
46. Define flange.
47. What are markups?
48. Describe piping specification.
49. Identify the dimensioning system most commonly used in
pipe drafting.
50. Provide basic guidelines that can be found in a company for
the minimum amount of pipe to be run between fittings and
valves.
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Chapter 21
Industrial Process Piping
Answers to End-of-Chapter Test Questions
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