API-571 Exam - Topic 1 Question 25 Discussion

Actual exam question for API's API-571 exam

Question #: 25
Topic #: 1

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?

AChloride stress corrosion

BPolythionic acid stress corrosion

CAmine stress corrosion

DStress oriented hydrogen induced cracking

Show Suggested Answer

Suggested Answer: B

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

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Jess

5 months ago

I agree, chloride stress corrosion is a common issue in those setups.

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Buck

5 months ago

Wait, stress oriented hydrogen induced cracking? Really?

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Man

5 months ago

Definitely not amine stress corrosion!

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Natalya

5 months ago

I think it's more likely polythionic acid stress corrosion.

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Mozell

6 months ago

Sounds like chloride stress corrosion to me.

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Tanesha

6 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

6 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

6 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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