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API-571 Exam - Topic 1 Question 25 Discussion

300 series stainless steel heater tubes in an oil-burning furnace in the hydrocracker began to leak and the furnace was brought down. What was the probable cause of the cracking?
B) Polythionic acid stress corrosion
A) Chloride stress corrosion
C) Amine stress corrosion
D) Stress oriented hydrogen induced cracking

API-571 Exam - Topic 1 Question 25 Discussion

Actual exam question for API's API-571 exam
Question #: 25
Topic #: 1
[All API-571 Questions]

300 series stainless steel heater tubes in an oil-burning furnace in the hydrocracker began to leak and the furnace was brought down. What was the probable cause of the cracking?

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Suggested Answer: B

by Sabra at May 06, 2022, 02:10 PM

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Jess
10 months ago
I agree, chloride stress corrosion is a common issue in those setups.
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Buck
10 months ago
Wait, stress oriented hydrogen induced cracking? Really?
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Man
10 months ago
Definitely not amine stress corrosion!
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Natalya
10 months ago
I think it's more likely polythionic acid stress corrosion.
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Mozell
10 months ago
Sounds like chloride stress corrosion to me.
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Tanesha
11 months ago
Okay, let me think this through. A should be fine since the assignment from double to float is valid. I'm guessing B and C are the errors, with the invalid float literal and capitalized type name.
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Crista
11 months ago
I'm pretty sure this is asking about when a CTR (Currency Transaction Report) needs to be filed, so I'll focus on the cash transaction amounts.
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James
11 months ago
I remember similar practice questions where exception generation attacks lead to crashes. That could be a possibility here too, right?
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