API Corrosion and Materials Professional - API-571 FREE EXAM DUMPS QUESTIONS & ANSWERS
Which of the following generally manifests itself as a subsurface damage mechanism?
Correct Answer: A
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(The most effective protection of carbon steel pilings from soil-side corrosion is a combination of a:)
Correct Answer: D
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Polythionic acid stress corrosion cracking is:
Correct Answer: D
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Which of the following is the best description of the surface appearance of metals with 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: D
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Refer to the following table:
Corroded End - Anodic (More Active)
Magnesium
Magnesium alloys
Zinc
Aluminum
Aluminum alloys
Steel
Cast iron
Type 410 SS (active state)
Ni-Resist
Type 304 SS (active state)
Type 316 SS (active state)
Lead
Tin
Nickel
Brass
Copper
Bronze
Copper-Nickel
Monel
Nickel (passive state)
Type 410 SS (passive state)
Type 304 SS (passive state)
Type 316 SS (passive state)
Titanium
Graphite
Gold
Platinum
Protected End - Cathodic (More Noble)
Which of the following metal combinations is most likely to experience galvanic corrosion in brackish water or seawater?
Corroded End - Anodic (More Active)
Magnesium
Magnesium alloys
Zinc
Aluminum
Aluminum alloys
Steel
Cast iron
Type 410 SS (active state)
Ni-Resist
Type 304 SS (active state)
Type 316 SS (active state)
Lead
Tin
Nickel
Brass
Copper
Bronze
Copper-Nickel
Monel
Nickel (passive state)
Type 410 SS (passive state)
Type 304 SS (passive state)
Type 316 SS (passive state)
Titanium
Graphite
Gold
Platinum
Protected End - Cathodic (More Noble)
Which of the following metal combinations is most likely to experience galvanic corrosion in brackish water or seawater?
Correct Answer: D
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(Which of the following is the appropriate method for monitoring hydrochloric acid corrosion susceptibility in an atmospheric crude unit?)
Correct Answer: B
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Which of the following is considered resistant to cracking in hydrofluoric acid service?
Correct Answer: B
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(Typically, surface decarburization will have what effect on steel components in high temperature service?)
Correct Answer: C
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