Provide API API-571 Dumps Updated Jun 03, 2026 With 151 QA's
Latest API-571 Dumps for Success in Actual API Certified
What is the duration of the API-571 Exam
- Format: Multiple choices, multiple answers
- Number of Questions: 70
- Length of Examination: 3.25 hours
NEW QUESTION # 75
_________ of the amine system is the most effective way to prevent amine corrosion.
- A. Proper design
- B. Proper concentration
- C. Proper operation
- D. Proper startup
Answer: C
NEW QUESTION # 76
A form of mechanical fatigue in which cracks are produced as a result of dynamic loadings is _______.
- A. Stress cracking
- B. Fatigue cracking
- C. Vibration-induced cracking
- D. Spheroidization
Answer: C
NEW QUESTION # 77
One way to prevent oxide scale formation on alloy steel is to increase the:
- A. Nickel content of the steel
- B. Carbon equivalent of the alloy
- C. Molybdenum content of the steel to 6%
- D. Chromium content of the steel
Answer: D
Explanation:
API RP 571 under Oxidation states:
"Resistance to oxidation is improved significantly by increasing chromium content, as it promotes the formation of a protective chromium oxide (Cr#O#) layer."
"Nickel may aid in high-temperature strength but does not directly improve oxidation resistance like chromium does." (Reference: API RP 571, Section 5.1.1 - Oxidation) Hence, option A is correct.
NEW QUESTION # 78
Naphthenic acid is _____ by catalytic reactions in downstream hydro processing and FCC units.
- A. Enhanced
- B. Concentrated
- C. Diluted
- D. Destroyed
Answer: D
NEW QUESTION # 79
Localized corrosion due to the concentration of caustic or alkaline salts that usually occurs under evaporative conditions is _________.
- A. Alkaline corrosion
- B. Caustic corrosion
- C. Carbonate corrosion
- D. None of the above
Answer: B
NEW QUESTION # 80
________ is a form of erosion caused by the formation and instantaneous collapse of innumerable tiny vapor bubbles.
- A. Condensate corrosion
- B. Dew-Point corrosion
- C. Atmospheric corrosion
- D. Cavitation
Answer: D
NEW QUESTION # 81
Short-term stress rupture is a/an:
- A. elevated temperature failure caused by diffusion of hydrogen into the material, typically characterized by blistering and cracking.
- B. elevated temperature failure caused by localized overheating, typically characterized by bulging and thinning.
- C. failure caused by repeated cycling from elevated temperature, typically characterized by through-wall oxide filled ruptures with little bulging.
- D. cracking failure caused by sulfides formed at elevated temperature that convert to acids on exposure to moisture and oxygen.
Answer: B
Explanation:
From API RP 571 Section 5.3.2.1 (Creep and Stress Rupture):
"Short-term creep rupture is often associated with localized overheating and results in bulging and thinning, often with a characteristic 'fish-mouth' rupture appearance. These failures occur under sustained load in a short time (hours or days), typically in high-temperature service due to a sudden increase in temperature or poor heat distribution." Thus, Option B accurately describes the mechanism and visual indications of short-term stress rupture.
NEW QUESTION # 82
___________ is the result of cyclic stresses caused by variations in temperature.
- A. Cyclic cracking
- B. Stress fatigue
- C. Stress cracking
- D. Thermal fatigue
Answer: D
NEW QUESTION # 83
Which of the following can be affected by 885ยบ F Embrittlement?
- A. Alloy 2205
- B. 430 SS
- C. A, B and D
- D. 410 SS
- E. 308 SS
Answer: C
NEW QUESTION # 84
Amine stress corrosion cracking is most often associated with lean amine services. The pure alkanolamine does not cause cracking. Cracking in rich amine services are most often associated with _______ problems.
- A. Stress
- B. H2S
- C. Temperature
- D. Wet H2S
Answer: D
NEW QUESTION # 85
With decarburization, the decarburized layer will be free of carbide phases. Carbon steel will be ______.
- A. Quenched
- B. None of the above
- C. Annealed
- D. Pure iron
Answer: D
NEW QUESTION # 86
Which of these materials are not susceptible to Spheroidization?
- A. Carbon steel
- B. 316 SS
- C. 9Cr-1Mo
- D. Both A and B
Answer: B
NEW QUESTION # 87
Inspecting for high-cycle fatigue can be difficult since:
- A. Predicting the location of cracking is difficult.
- B. Often the equipment is vibrating making non-destructive evaluations difficult.
- C. Once the crack begins, only a few cycles are needed for the crack to lead to failure.
- D. The cracks are extremely tight.
Answer: C
NEW QUESTION # 88
For a specific material, HTHA is dependent on temperature, hydrogen partial pressure, time and _________.
- A. Velocity
- B. Stress
- C. Pressure
- D. Alloy composition
Answer: B
NEW QUESTION # 89
Alloys with nickel content above _________ are highly resistant to Cl SCC. The greatest susceptibility is 8% to
12% nickel.
- A. 35%
- B. 20%
- C. 30%
- D. 15%
Answer: A
NEW QUESTION # 90
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How to study the API-571 Exam
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API API-571 Exam Syllabus Topics:
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