Free API-571 Exam Braindumps (page: 43)

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Naphthenic acid corrosion is a form of high temperature corrosion that occurs primarily in crude and vacuum units and downstream units that process certain fractions that contain naphthenic acid.
Which of the following materials is susceptible to naphthenic acid corrosion?

  1. Carbon steel
  2. 300 Series SS
  3. 400 Series SS
  4. All of the above

Answer(s): D



A form of corrosion caused by living organisms such as bacteria, algae or fungi is _______ .

  1. HIC
  2. SOHIC
  3. MIC
  4. None of the above

Answer(s): C



____________ are characterized by a localized loss in thickness in the form of pits, grooves, gullies, waves, rounded holes and valleys. These losses often exhibit a directional pattern.

  1. Erosion
  2. Corrosion/Erosion
  3. Environmental corrosion
  4. Both A and B

Answer(s): D



The best method to inspect for SCC is ____.

  1. WFMT
  2. UT Shear wave
  3. AET
  4. All of the above

Answer(s): A






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