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CHAPTER 3 PIPING AND VESSELS TEST
1. How does increased temperature affect the performance of metals?
a. decreases as temperature increases
b. increases as temperature increases
c. is not affected by temperature
2. Why are brass tubes used instead of carbon steel in many heat exchangers that use
water as the cooling medium?
a. high resistance to thermal expansion
b. brass is less expensive
c. high resistance to water containing various impurities
d. easier to cut and install
3. What metal would you use for a vessel containing non-corrosive material at 100
psig and 300˚F?
a. carbon steel
b. hasteloy
c. stainless steel
d. nonferrous alloy
4. List the various types of vessels found in a process unit.
a. distillation column
b. drums and tanks
b. reactors
c. all the above
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5. List the important facts associated with pipe size and diameter.
a. most pipe used in plants is: 1/2”, 3/4”, 1”, 1 1/2”, 2”, 3”, 4”, 6”, 8”, 10”,
12”, and 14” and higher.
b. the term schedule (40 or 80) refers to the actual thickness of the pipe wall.
c. the inside and outside diameter of a pipe is slightly different.
d. all of the above
6. What is a nonferrous alloy?
a. a metal or alloy that contains iron
b. a metal or alloy that does not contain iron
c. a key element in brass
d. a key element in aluminum
7. Would you use carbon steel, brass, stainless steel, or hasteloy in a hot, extremely
corrosive process?
a. brass
b. stainless steel
c. hasteloy
d. carbon steel
8. What type of shut off does a paddle blind provide?
a. partial shut-off
b. double-block and bleed
c. positive shut-off
d. figure eight closure
9. What two types of blinds do we use?
a. paddle and figure eight
b. solid and wedge
c. flat and plate
d. orifice and paddle
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10. What information do process technicians find on vessel design sheets?
a. total cost of equipment
b. the factors entering into the selection, use, and need for periodic inspection
of materials used to make vessels.
c. the factors or variables of each process and system
d. manufacturer code stamp listings
11. What is an alloy steel?
a. steels that contain 1% or more of alloying metals
b. steels that contain 5% or more of alloying metals
c. steels that contain 10% or more of alloying metals
d. all of the above
12. What is corrosion, and how is it manifested?
a. binds alloys to oxygen, loss of metal, pitting, grooving, cracking
b. deteriorates equipment; loss of metal, pitting, grooving, cracking
c. a chemical reaction that melts bonds; forms rust
d. deteriorate metal by forming high pH solvents
13. What factors determine how thick a vessels walls should be?
a. anticipated corrosion rates
b. strength of material used
c. temperature and pressure
d. all of the above
14. What metal is used for extremely low temperatures (below – 150˚F)?
a. carbon steel
b. Type 304 stainless steel
c. brass
d. a & c
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15. Select the various inspection procedures used in a process plant.
a. visual, electronic-sonic, x-ray, magnetic
b. f-max, post hoc, biserial correlation inspection
c. standard deviation, time chart inspection
d. spearman rank correlation, magnetic particle inspection
16. Tanks, drums, and vessels are typically classified as:
a. low and high pressure
b. liquid and gas service
c. insulated, steam traced, and water cooled.
d. all the above
17. The threads on screwed piping is treated with _______ before joining.
a. Teflon tape
b. Thread compound
c. combination of Teflon and thread compound
d. all the above
18. Spherical and spheroidal storage tanks are designed to store gases or pressures
above:
a. 1 psig
b. 3 psi
c. above 5 psig
d. below 5 psig
19. Spheroidal tanks are __________ than spherical tanks.
a. rounder
b. bigger
c. flatter
d. thicker
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20. Common storage designs include all the following except:.
a. spheres
b. spheroids
c. cylindrical tanks
d. columns & towers
21. A tank farm is best described as:.
a. a facility engineered to construct process tanks.
b. a military installation designed to assemble military parts.
c. tanks, pipes, pumps, instruments and valves.
d. a collection of tanks designed to safely store and transport raw materials
and products.
22. A manway is best described as:.
a. an insulated system designed to hold in heat or cold.
b. a cylindrical device used to clean out pipes and tanks.
c. a hatch or port used to provide open access into a tank.
d. a flat face flange used to connect piping to equipment
23. A Datum plate is:.
a. a reference point on the bottom of a tank used to measure liquid level.
b. used to calculate the pressure difference in a flow transmitter.
c. used to prevent electrochemical reactions.
d. a flat hatch or port
24. A pig is:.
a. an industrial term used to describe a restriction in a system.
b. a cylindrical device used to clean out pipes.
c. another name for a hemispheroidal tank.
d. an electrical connection used with high voltage.
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25. Process technicians use ______________ to calculate the volume in a tank:.
a. tankage
b. volume tables
c. load cells
d. strapping tables
26. A 55-gallon barrel typically holds:.
a. 42 gallons
b. 46 gallons
c. 50 gallons
d. 55 gallons
27. All of the following are examples of floating roof tanks except:.
a. pan type
b. pontoon type
c. atmospheric membrane
d. double deck
28. All of the following are examples of pressure storage vessels except:.
a. drum
b. cone
c. sphere
d. speroid
29. The welded joint on a cone-roof where the roof joins the shell is :.
a. engineered stronger due to higher vapor pressures near the top
b. purposely made weaker than other joints so that it will burst and relieve
pressure and not spill contents.
c. helps confine the fluid should a fire or explosion occur inside a tank.
d. B & C
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30. Gas-blanketed tanks are used to:.
a. store hazardous feedstocks
b. reduce air, reduce flammability and explosive range of vapors
c. cool-off product by holding molecules closer to the liquid
d. A & B
31. Water draws are provided at:
a. the top
b. the middle
c. the bottom
d. are not provided in hydrocarbon systems
32. Traditional diking uses:
a. fire protection, barricades, and trenches
b. concrete pads and drainage systems
c. firewalls, dikes, sloping grade and pits
d. elevated dikes that surround a single tank
33. Modern diking includes:
a. fire protection, barricades, and trenches
b. concrete pads and drainage systems
c. firewalls, dikes, sloping grade and pits
d. elevated dikes that surround a single tank
34. Bonding is achieved by:
a. connecting an object to the earth with a rod
b. physically connecting two objects together with a copper wire.
c. allowing electric sparks to discharge
d. adhering objects together with a chemical
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35. Grounding is achieved by:
a. connecting an object to the earth with a rod
b. physically connecting two objects together with a copper wire.
c. allowing electric sparks to discharge
d. adhering objects together with a chemical
36. A conservation vent is used with the following term:
a. conserving
b. breathing
c. tank terminology
d. gas-blanket
37. Gauge hatches are used for all of the following except:
a. provide pressure relief
b. allow contents to be measured
c. prevent loss of vapor and let rain in
d. pumping out water
38. Flame arrestors are typically mounted in:
a. a vent
b. a pipe
c. a stack
d. gauge hatches
39. Hemispheroidal tanks have a pressure range of:
a. 2.5 to 15 psig
b. 5 to 10 psig
c. atmospheric to 55 psig
d. atmospheric to 150 psig
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40. If a tank is rated as a 5,000 bbl tank it can safely store:
a. 160,000 gallons
b. 230,000 gallons
c. 210,000 gallons
d. 275,000 gallons
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Answer Key CHAPTER 3 Piping and Vessels
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