Free API API-571 Practice Test & Real Exam Questions
Hydrogen permeation or diffusion rates associated with wet H#S damage of carbon steel and low-alloy steels have been found to be minimal at a pH of:
Correct Answer: A
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Which type of corrosion is most likely to occur in hydroprocess reactor effluent streams in units producing alkaline sour water?
Correct Answer: A
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(What nondestructive examination (NDE) technique requires the least amount of surface preparation to locate wet H#S damage mechanisms?)
Correct Answer: A
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Hydrogen stress cracking is normally found in:
Correct Answer: B
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Which of the following is most susceptible to chloride stress corrosion cracking?
Correct Answer: C
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Which of the following will experience the highest oxidation corrosion rate at 1350°F (732°C)?
Correct Answer: A
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Which of the following damage mechanisms is related to steel hardness?
Correct Answer: C
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Amine corrosion occurs principally on what class of materials?
Correct Answer: C
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In most cases, brittle fracture occurs only at:
Correct Answer: D
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(What steel alloy is no longer recommended for services susceptible to HTHA?)
Correct Answer: D
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