API API-571 Exam (page: 9)
API Corrosion and Materials Professional
Updated on: 09-Feb-2026

Viewing Page 9 of 92

Which API RP recommends programs to monitor small-bore piping, flange faces, blistering and HIC/SOHIC in HF alky units?

  1. 574
  2. 751
  3. 571
  4. 980

Answer(s): B



Low creep ductility is __________ severe in high tensile strength materials and welds.

  1. More
  2. Less
  3. Usually
  4. Not

Answer(s): A



_________ is most likely found in hard weld and heat-affected zones and in high strength components.

  1. HIC
  2. SSC
  3. SOHIC
  4. Blistering

Answer(s): B



At elevated temperature, the carbide phases in certain carbon steels are unstable and may decompose into _______. This decomposition is known as graphitization.

  1. Silicon
  2. Graphite nodules
  3. Carbon dust
  4. Graphite dust

Answer(s): B



Hydrogen blisters may form as surface bulges on the ID, the OD on within the wall thickness of a pipe or pressure vessel. Blistering occurs from hydrogen generated by ______, not hydrogen gas from the process stream.

  1. H²S
  2. Corrosion
  3. Hydriding
  4. Sulfur

Answer(s): B



Viewing Page 9 of 92



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question #3 refers to vnet4 and vnet5. however, there is no vnet5 listed in the case study (testlet 2).
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GERMANY


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qs 4 answer seems wrong- please check
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Anorag 9/6/2023 9:24:00 AM

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CANADA


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some of the answers are incorrect, i would be wary of using this until an admin goes back and reviews all the answers
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