Free API API-571 Practice Test & Real Exam Questions
The presence of which additional substance(s) will accelerate the corrosion of steel in the presence of sulfur compounds at high temperature?
Correct Answer: D
Vote an answer
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
The most important alloying element for prevention of high-temperature hydrogen attack is:
Correct Answer: B
Vote an answer
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
(What is the minimum pH value where chloride stress corrosion cracking begins to occur?)
Correct Answer: A
Vote an answer
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
(Typically, surface decarburization will have what effect on steel components in high temperature service?)
Correct Answer: D
Vote an answer
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
Polythionic acid stress corrosion cracking (PTASCC) can be detected by:
Correct Answer: B
Vote an answer
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
(Which of the following would be most useful in finding carbolic acid corrosion?)
Correct Answer: A
Vote an answer
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
(Which of the following is the most effective inspection method when ammonium bisulfide corrosion may be present?)
Correct Answer: D
Vote an answer
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
(Corrosion fatigue can be distinguished from stress corrosion cracking because the fatigue:)
Correct Answer: C
Vote an answer
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
Which of the following will be most effective in finding sour water corrosion?
Correct Answer: D
Vote an answer
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
Which of the following is the most significant result of spheroidization in steels?
Correct Answer: A
Vote an answer
Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).
