API 571 Erosion/Erosion-Corrosion

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The flashcards below were created by user Gibby on FreezingBlue Flashcards.


  1. The removal of surface material by impacting material is what?
    Erosion
  2. The removal of a materials protective scale by impacting material is called?
    Erosion-Corrosion
  3. Which of the following is NOT a primary factor contributing to erosion?
    A) Corrosiveness of the environment
    B) Velocity of impacting particles
    C) Density of impacting particles
    D) Size of impacting particles
    E) Impact angle (angle that impacting particles strike metal)
    A) Corrosiveness of the environment
    (this multiple choice question has been scrambled)
  4. Which of the following is NOT a primary factor contributing to Erosion-Corrosion?
    A) Impact angle (angle that impacting particles strike metal)
    B) Corrosiveness of the environment
    C) Tensile strength of the metal
    D) Velocity of impacting particles
    C) Tensile strength of the metal
    (this multiple choice question has been scrambled)
  5. A prime location for Erosion is:
    A) downstream of a gate valve
    B) in superheated steam piping
    C) in catalyst piping
    C) in catalyst piping
    (this multiple choice question has been scrambled)
  6. In the Crude Unit, piping and vessels may have high metal loss from Erosion-Corrosion if the unit is exposed to:
    A) hydrogen
    B) low strength caustic
    C) naphthenic acid
    D) water
    C) napthenic acid
    (this multiple choice question has been scrambled)
  7. Erosion or Erosion-corrosion usually appears as:
    A) random pitting
    B) Directional pits, grooves, or waves
    C) directional cracks
    D) random grooving
    B) directional pits, grooves, or waves
    (this multiple choice question has been scrambled)
  8. A 6 NPS carbon steel line is experiencing Erosion-Corrosion. A reasonable solution would be to:
    A) increase the line size to 10 NPS
    B) reduce the velocity by lowering the Unit throughput by 50%
    C) overlay the inside of the pipe with Stellite or another hard alloy.
    D) remove all elbows and replace with long bent pipe
    A) increase the line size to 10 NPS
    (this multiple choice question has been scrambled)

Card Set Information

Author:
Gibby
ID:
333974
Filename:
API 571 Erosion/Erosion-Corrosion
Updated:
2017-09-06 02:16:39
Tags:
API 571 Erosion Corrosion
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Description:
API 571 Erosion/Erosion-Corrosion
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