Free API-571 Exam Braindumps (page: 28)

Page 27 of 114

Changing to a more corrosion resistant and/or higher hardness material _________ improve cavitation resistance.

  1. Will
  2. May
  3. Will not
  4. May not

Answer(s): D



Dew point corrosion can occur if the metal temperature is below the dew point. The dew point of sulfuric acid is __________.

  1. 280º F
  2. 220º F
  3. 310º F
  4. 190º F

Answer(s): A



All piping and equipment exposed to HF acid at any concentration with hardness levels above ________ are subject to hydrogen stress cracking.

  1. 200 BHN
  2. 210 BHN
  3. 227 BHN
  4. 237 BHN

Answer(s): D



Cooling water corrosion and __________ are closely related and should be considered together.

  1. Stress
  2. Velocity
  3. Fouling
  4. Erosion

Answer(s): C






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