Free API-571 Exam Braindumps (page: 21)

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Which of these materials is not susceptible to amine cracking?

  1. Carbon steel
  2. 300 Series SS
  3. 400 Series SS
  4. Both B and C

Answer(s): D



The presence of ________ in H²S streams increases the severity of high temperature sulfide corrosion at temperatures above about 500º F

  1. Amine
  2. Hydrogen
  3. Sulfides
  4. All of the above

Answer(s): B



Increasing chromium content in the alloy improves resistance to sulfidation. However, there is little improvement with increasing chromium content until about ________ Cr.

  1. 3-5
  2. 5-7
  3. 7-9
  4. 9-12

Answer(s): C



_________ is the sudden rapid fracture under stress (residual or applied) where the material exhibits little or no evidence of ductility or plastic deformation.

  1. Thermal fatigue
  2. Thermal shock
  3. Brittle fracture
  4. Stress fracture

Answer(s): C






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