Free API-571 Exam Braindumps (page: 39)

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________ and _______ damage develop without applied or residual stress so that PWHT will not prevent them from occurring.

  1. SOHIC, Blistering
  2. SCC, SOHIC
  3. HIC, SCC
  4. Blistering, HIC

Answer(s): D



Corrosion protection in the boiler is accomplished by laying down and continuously maintaining a layer of _____.

  1. Manganese
  2. Magnetite
  3. Carbon monoxide
  4. Carbonate

Answer(s): B



Susceptibility to hydrogen stress cracking __________ with __________ hardness.

  1. Increases, increasing
  2. Decreases, increasing
  3. Decreases, Decreasing
  4. Both A and C

Answer(s): D



Which of these materials are not susceptible to Spheroidization?

  1. Carbon steel
  2. 9Cr-1Mo
  3. 316 SS
  4. Both A and B

Answer(s): C






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