최신API Corrosion and Materials Professional - API-571무료샘플문제
문제1
Aggressive ammonium chloride corrosion often occurs:
Aggressive ammonium chloride corrosion often occurs:
정답: B
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문제2
Hydrogen stress cracking is normally found in:
Hydrogen stress cracking is normally found in:
정답: A
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문제3
Metal dusting usually occurs in the operating temperature range of:
Metal dusting usually occurs in the operating temperature range of:
정답: C
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문제4
The presence of which additional substance(s) will accelerate the corrosion of steel in the presence of sulfur compounds at high temperature?
The presence of which additional substance(s) will accelerate the corrosion of steel in the presence of sulfur compounds at high temperature?
정답: C
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문제5
For exchangers where the cooling water chemistry is poorly maintained, what can be done to improve corrosion resistance?
For exchangers where the cooling water chemistry is poorly maintained, what can be done to improve corrosion resistance?
정답: B
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문제6
(Which of the following would be most useful in finding carbolic acid corrosion?)
(Which of the following would be most useful in finding carbolic acid corrosion?)
정답: C
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문제7
The primary cause of ammonium chloride corrosion is the formation of salts:
The primary cause of ammonium chloride corrosion is the formation of salts:
정답: D
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문제8
In what damage mechanism does hydrogen combine with carbides in steel to form bubbles or cavities of CH#?
In what damage mechanism does hydrogen combine with carbides in steel to form bubbles or cavities of CH#?
정답: D
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문제9
(Which three residual alloy elements are of most concern when it comes to corrosion of carbon steel in HF Alkylation process units?)
(Which three residual alloy elements are of most concern when it comes to corrosion of carbon steel in HF Alkylation process units?)
정답: A
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