API API-571 - Corrosion and Materials Professional Exam
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Total 454 questions
Question #6 (Topic: )
Characteristic stress corrosion cracks have many branches and may be visually detectable
by a __________ appearance on the surface.
by a __________ appearance on the surface.
A. Tree shaped
B. Craze-cracked
C. Multiple crack
D. None of the above
Answer: B
Question #7 (Topic: )
Caustic embrittlement cracking can be effectively prevented by means of PWHT at a
temperature of _______.
temperature of _______.
A. 1100º F
B. 1150º F
C. 1200º F
D. 1250º F
Answer: B
Question #8 (Topic: )
Cavitation is a form of erosion caused by the formation and instantaneous collapse of
innumerable tiny vapor bubbles. Temperatures approaching the boiling point of the liquid
are _________ to result in bubble formation.
innumerable tiny vapor bubbles. Temperatures approaching the boiling point of the liquid
are _________ to result in bubble formation.
A. Less likely
B. More likely
C. Not likely
D. None of the above
Answer: B
Question #9 (Topic: )
A 6, A106 Gr B, flanged line carrying caustic wash water at 200 F has signs of
atmospheric corrosion. Which of the following may have help accelerate the corrosion?
atmospheric corrosion. Which of the following may have help accelerate the corrosion?
A. Sulfides
B. Fly ash
C. Caustic
D. None of the above
Answer: B
Question #10 (Topic: )
__________ is a change in the microstructure of steels after exposure in the 850 F to
1400 F range, where the carbide phases in carbon steels are unstable and may
agglomerate from their normal plate-like appearance.
1400 F range, where the carbide phases in carbon steels are unstable and may
agglomerate from their normal plate-like appearance.
A. Carburization
B. Spheroidization
C. Graphiding
D. 885º Embrittlement
Answer: B
