API Exam API-571 Topic 1 Question 95 Discussion

Actual exam question for API's API-571 exam

Question #: 95
Topic #: 1

[All API-571 Questions]

Sulfidation is primarily caused by:

AImpacting particles.

BSulfur compounds decomposing at higher temperatures.

CSulfur compounds being created in the FCCU (Cat Cracking Unit).

DElemental sulfur collecting in stagnate areas, e.g. dead legs.

EOperators failing to adequately control the ph of sulfur streams.

Show Suggested Answer

Suggested Answer: B

by Toi at Sep 09, 2024, 10:12 PM

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Norah

1 months ago

That's a good point, Albina. Stagnate areas could definitely contribute to sulfidation.

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Albina

1 months ago

I'm not sure, but I think it could also be D) Elemental sulfur collecting in stagnate areas.

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Burma

1 months ago

Sulfidation, huh? Sounds like a good name for a heavy metal band. 'Sulfidation' - I can already hear the sick guitar riffs!

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Dyan

1 months ago

I agree with Norah, sulfur compounds decomposing makes sense.

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Vallie

1 months ago

E) Operators failing to control the pH of sulfur streams? Sounds like someone's trying to sneak in a trick question here.

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Erick

4 days ago

C) Sulfur compounds being created in the FCCU (Cat Cracking Unit).

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Barney

6 days ago

C) Sulfur compounds being created in the FCCU (Cat Cracking Unit).

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Glory

14 days ago

B) Sulfur compounds decomposing at higher temperatures.

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Yen

15 days ago

B) Sulfur compounds decomposing at higher temperatures.

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Darci

19 days ago

A) Impacting particles.

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Fredric

26 days ago

A) Impacting particles.

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Lachelle

2 months ago

I'm going with C) Sulfur compounds being created in the FCCU. That's where a lot of sulfur-containing feedstocks get processed, so it's a logical source.

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Cyndy

20 days ago

I agree with option C as well, the FCCU seems like a likely culprit for sulfidation.

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Wenona

1 months ago

I'm not so sure, I think it could also be caused by impacting particles.

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Argelia

1 months ago

I think you're right, the FCCU is definitely a major source of sulfur compounds.

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Ceola

2 months ago

D) Elemental sulfur collecting in stagnate areas makes sense too. Dead legs and other low-flow zones can be a breeding ground for sulfur buildup.

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Shenika

12 days ago

E) Operators failing to adequately control the ph of sulfur streams.

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Cecil

15 days ago

D) Elemental sulfur collecting in stagnate areas, e.g. dead legs.

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Raul

1 months ago

B) Sulfur compounds decomposing at higher temperatures.

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Galen

1 months ago

A) Impacting particles.

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Norah

2 months ago

I think the answer is B) Sulfur compounds decomposing at higher temperatures.

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Kris

2 months ago

B) Sulfur compounds decomposing at higher temperatures seems like the correct answer here. That's how sulfidation typically occurs, right?

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Yesenia

2 months ago

B) Sulfur compounds decomposing at higher temperatures seems like the correct answer here. That's how sulfidation typically occurs, right?

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Janessa

2 months ago

A) Impacting particles.

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