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

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  • Understand refining industry damage mechanisms used in uniform of localized loss in thickness phenomena.
  • Knowledge of general damage mechanisms applicable to the industry and be able to identify their features and functions.
  • Identify the various mechanical and metallurgical failure mechanisms such as brittle fracture, steam blanketing, stress rupture, cracking, thermal shock, fatigue and corrosion.
  • Explore damage mechanisms on high temperature corrosion including oxidation, sulfidation, carburization and metal dusting.
  • Possess a general background on the scope, organization and use of API 571 and be able to review the standards and other references related to it.
  • Explore refining industry damage mechanisms for environment assisted cracking and be able to identify the other types of mechanisms.
  • Determine general damage mechanisms on uniform or localized loss thickness and explain the various types of corrosion related to it.

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How much API-571 Exam Cost

The price of the API-571 exam is $365 USD.

API API-571 Exam Syllabus Topics:

SectionObjectives
Topic 1: Metallurgical Damage Mechanisms- Embrittlement phenomena
  • 1. Sigma phase embrittlement
    • 2. Temper embrittlement
      - High-temperature degradation
      • 1. Thermal fatigue
        • 2. Graphitization
          • 3. Creep damage
            Topic 2: Environmentally Assisted Cracking- Stress corrosion cracking
            • 1. Chloride stress corrosion cracking
              • 2. Caustic cracking
                - Hydrogen-related damage
                • 1. Hydrogen embrittlement
                  • 2. Hydrogen blistering
                    • 3. Hydrogen induced cracking (HIC)
                      Topic 3: Materials Selection and Mitigation- Corrosion control strategies
                      • 1. Coatings and linings
                        • 2. Corrosion inhibitors
                          • 3. Material selection principles
                            Topic 4: Refining Process-Specific Damage- Hydroprocessing units
                            • 1. High-pressure hydrogen service degradation
                              • 2. Hydrogen attack mechanisms
                                - FCC and sulfur recovery units
                                • 1. High-temperature sulfidic corrosion
                                  • 2. Erosion-corrosion interactions
                                    Topic 5: General Knowledge of Damage Mechanisms- Overview of degradation in refining environments
                                    • 1. Damage mechanism classification
                                      • 2. Materials performance fundamentals
                                        Topic 6: Corrosion Mechanisms- High-temperature corrosion
                                        • 1. Sulfidation
                                          • 2. Oxidation
                                            • 3. Carburization
                                              - Aqueous corrosion
                                              • 1. Crevice corrosion
                                                • 2. Galvanic corrosion
                                                  • 3. Pitting corrosion
                                                    • 4. Microbiologically influenced corrosion (MIC)
                                                      • 5. Uniform corrosion

                                                        API Corrosion and Materials Professional Sample Questions:

                                                        Boiler water condensate corrosion is caused primarily by:

                                                        • A. High pH from water treatment problems
                                                        • B. Sodium sulfites or hydrazines
                                                        • C. Dissolved iron oxides
                                                        • D. Carbon dioxide and oxygen
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

                                                        Explanation: Only visible for VCE4Plus members. You can sign-up / login (it's free).

                                                        (Refractory materials can suffer what forms of degradation in service?)

                                                        • A. Nitriding and embrittlement
                                                        • B. Carburization and fuel ash corrosion
                                                        • C. Sulfidation and oxidation
                                                        • D. Refractory dusting and checking
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

                                                        Explanation: Only visible for VCE4Plus members. You can sign-up / login (it's free).

                                                        Hydrogen stress cracking is normally found in:

                                                        • A. stainless steel internals such as trays.
                                                        • B. mild carbon steels at high temperatures and high hydrogen partial pressure.
                                                        • C. the presence of sulfuric acid.
                                                        • D. high strength low alloy steels and carbon steels.
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

                                                        Explanation: Only visible for VCE4Plus members. You can sign-up / login (it's free).

                                                        Internal galvanic corrosion in piping near the joint of two dissimilar metals is best detected by external:

                                                        • A. Liquid-penetrant testing
                                                        • B. Eddy-current testing
                                                        • C. Metallographic examination
                                                        • D. Ultrasonic thickness testing
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: D  🗳️

                                                        Explanation: Only visible for VCE4Plus 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. Improper postweld heat treatment (PWHT)
                                                        • C. Welding with wet electrodes
                                                        • D. High-temperature hydrogen attack (HTHA)
                                                        Reveal Solution  Discussion  0

                                                        Correct Answer: B  🗳️

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