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Corrosion and Materials Professional

Exam Details

  • Exam Code
    :API-571
  • Exam Name
    :Corrosion and Materials Professional
  • Certification
    :API Certifications
  • Vendor
    :API
  • Total Questions
    :454 Q&As
  • Last Updated
    :Jun 28, 2025

API API Certifications API-571 Questions & Answers

  • Question 81:

    PWHT is ___________ in preventing caustic SCC.

    A. Effective

    B. Not effective

    C. Not practical

    D. None of the above

  • Question 82:

    The regenerator reboiler and the regenerator are areas where the temperature and __________ of the amine stream are the highest and can cause significant corrosion problems.

    A. Pressure

    B. Stress

    C. Turbulence

    D. Concentration

  • Question 83:

    Refractory lined equipment should be designed for erosion, thermal shock and __________.

    A. Thermal fatigue

    B. Thermal expansion

    C. Thermal contraction

    D. All of the above

  • Question 84:

    Graphitization can be prevented by using chromium containing low alloys steels for long- term exposure above ________.

    A. 650º F

    B. 700º F

    C. 750º F

    D. 800º F

  • Question 85:

    Galvanized steel components should not be welded to ________ due to LME.

    A. 300 Series SS

    B. 400 Series SS

    C. Carbon steel

    D. Duplex SS

  • Question 86:

    Although cracks may be seen visually, crack detection for caustic stress corrosion cracking is best detected by WFMT, EC, RT and ______.

    A. PT

    B. MT

    C. ACFM

    D. All of the above

  • Question 87:

    In piping and equipment, creep cracking can occur where high metal temperatures and _________ occur together. Creep cracking, once initiated, can progress rapidly.

    A. Pressures

    B. Stress risers

    C. Velocities

    D. None of the above

  • Question 88:

    High strength, low allow steels such as A193-B7 bolts and compressor parts are susceptible to hydrogen stress cracking. A193-B7M bolts are susceptible if __________.

    A. Exposed

    B. Overtorqued

    C. Double nutted

    D. None of the above

  • Question 89:

    The most common method used for monitoring underground structures is measuring the structure to soil ______ using dedicated reference electrodes near the structure.

    A. Resistivity

    B. Corrosiveness

    C. Potential

    D. Electrolyte

  • Question 90:

    If wet electrodes or high moisture content flux is used, ________ can be charged into the steel resulting in delayed cracking.

    A. Atomic hydrogen

    B. Hydrogen

    C. Oxygen

    D. H²O

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