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Reference: http://www.api.org/products-and-services/individual-certification-programs/certifications/api571#tab_exam-info

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API API-571 Exam Syllabus Topics:

SectionObjectives
Refining Process-Specific Damage- Hydroprocessing units
  • 1. Hydrogen attack mechanisms
    • 2. High-pressure hydrogen service degradation
      - FCC and sulfur recovery units
      • 1. High-temperature sulfidic corrosion
        • 2. Erosion-corrosion interactions
          Materials Selection and Mitigation- Corrosion control strategies
          • 1. Coatings and linings
            • 2. Corrosion inhibitors
              • 3. Material selection principles
                Metallurgical Damage Mechanisms- High-temperature degradation
                • 1. Thermal fatigue
                  • 2. Creep damage
                    • 3. Graphitization
                      - Embrittlement phenomena
                      • 1. Sigma phase embrittlement
                        • 2. Temper embrittlement
                          Environmentally Assisted Cracking- Hydrogen-related damage
                          • 1. Hydrogen blistering
                            • 2. Hydrogen embrittlement
                              • 3. Hydrogen induced cracking (HIC)
                                - Stress corrosion cracking
                                • 1. Caustic cracking
                                  • 2. Chloride stress corrosion cracking
                                    Corrosion Mechanisms- Aqueous corrosion
                                    • 1. Pitting corrosion
                                      • 2. Microbiologically influenced corrosion (MIC)
                                        • 3. Crevice corrosion
                                          • 4. Uniform corrosion
                                            • 5. Galvanic corrosion
                                              - High-temperature corrosion
                                              • 1. Carburization
                                                • 2. Sulfidation
                                                  • 3. Oxidation
                                                    General Knowledge of Damage Mechanisms- Overview of degradation in refining environments
                                                    • 1. Damage mechanism classification
                                                      • 2. Materials performance fundamentals

                                                        API Corrosion and Materials Professional Sample Questions:

                                                        In a wet H2S-type environment, what fluid material will significantly increase the probability of blistering?

                                                        • A. Carbonates
                                                        • B. Amines
                                                        • C. Polythionic acid
                                                        • D. Cyanides
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

                                                        Explanation: Only visible for PrepAwayExam members. You can sign-up / login (it's free).

                                                        Which of the following can cause hydrogen embrittlement of carbon steel?

                                                        • A. Cleaning and pickling in caustic solutions
                                                        • B. Welding with wet electrodes
                                                        • C. High-temperature hydrogen attack (HTHA)
                                                        • D. Improper postweld heat treatment (PWHT)
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

                                                        One way to prevent oxide scale formation on alloy steel is to increase the:

                                                        • A. Chromium content of the steel
                                                        • B. Molybdenum content of the steel to 6%
                                                        • C. Nickel content of the steel
                                                        • D. Carbon equivalent of the alloy
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: A  🗳️

                                                        Explanation: Only visible for PrepAwayExam members. You can sign-up / login (it's free).

                                                        H#S content, pH, temperature, velocity, and oxygen concentration are critical factors of:

                                                        • A. Sour water acid corrosion
                                                        • B. Naphthenic acid corrosion
                                                        • C. Polythionic acid cracking
                                                        • D. Sulfuric acid corrosion
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: A  🗳️

                                                        Explanation: Only visible for PrepAwayExam members. You can sign-up / login (it's free).

                                                        An inspector has discovered significant cracking in a T-joint where hot and cold hydrogen-containing streams are mixing in a hydroprocess unit. What damage mechanism should the inspector suspect is the cause?

                                                        • A. Thermal fatigue
                                                        • B. Mixing point corrosion
                                                        • C. Injection point corrosion
                                                        • D. Hydrogen embrittlement
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: A  🗳️

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