API Exam API-571 Topic 1 Question 91 Discussion

Actual exam question for API's API-571 exam

Question #: 91
Topic #: 1

[All API-571 Questions]

Corrosion from oxygen in boiler feed water usually creates:

AUniform corrosion.

BIsolated pitting.

CIntergranular cracking.

DTransgranular cracking.

EHard and brittle zones.

Show Suggested Answer

Suggested Answer: B

by Karina at Jul 10, 2024, 11:37 AM

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Stephen

24 days ago

I think the correct answer is C) Intergranular cracking because oxygen can cause stress corrosion cracking.

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Judy

25 days ago

I'm gonna have to go with B. Isolated pitting. Sounds like the most straightforward result of that pesky oxygen.

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Ardella

28 days ago

I'm not sure, but I think it could also be A) Uniform corrosion.

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Edgar

1 months ago

Haha, I bet the correct answer is 'all of the above'. Oxygen in your boiler water is just a recipe for disaster all around!

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France

2 days ago

C) Intergranular cracking.

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Robt

25 days ago

B) Isolated pitting.

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Therese

27 days ago

A) Uniform corrosion.

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Belen

1 months ago

I disagree, I believe it's D) Transgranular cracking.

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Catalina

1 months ago

E. Hard and brittle zones? Really? That sounds like a weird side effect. I'll pass on that one.

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Casie

1 months ago

I'm going with C. Intergranular cracking can happen when you have oxygen corrosion, right? Seems like the most technical answer to me.

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Salina

25 days ago

C) Intergranular cracking can happen when you have oxygen corrosion, right? Seems like the most technical answer to me.

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Theresia

28 days ago

A) Uniform corrosion.

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Demetra

2 months ago

Definitely B. Isolated pitting is the classic result of corrosion from oxygen in boiler feed water. I've seen it firsthand in my plant.

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Isadora

21 days ago

Have you implemented any specific measures to prevent isolated pitting in your plant?

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Yesenia

25 days ago

Isolated pitting can lead to serious damage if not addressed promptly.

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Emilio

27 days ago

It's important to monitor and control the oxygen levels in boiler feed water to prevent this type of corrosion.

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Serina

1 months ago

I agree, isolated pitting is a common issue with oxygen corrosion.

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Vinnie

2 months ago

I think the answer is B) Isolated pitting.

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