Deal of The Day! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

API-571 Exam - Topic 2 Question 126 Discussion

(Cooling water corrosion usually increases with decreasing:)
D) Velocities
A) Microbiological activity
B) Oxygen content
C) Process temperatures

API-571 Exam - Topic 2 Question 126 Discussion

Actual exam question for API's API-571 exam
Question #: 126
Topic #: 2
[All API-571 Questions]

(Cooling water corrosion usually increases with decreasing:)

Show Suggested Answer Hide Answer
Suggested Answer: D

Comprehensive and Detailed Explanation From Exact Extract:

According to API RP 571, corrosion in cooling water systems often increases at low flow velocities due to:

Stagnation

Deposit formation

Increased risk of underdeposit corrosion and MIC

Higher velocities tend to:

Sweep away deposits

Maintain protective films (within erosion limits)

Therefore, decreasing velocity is strongly associated with increased corrosion risk.

Referenced Documents (Study Basis):

API RP 571 -- Section on Cooling Water Corrosion


by Tom at May 28, 2026, 10:20 PM

Limited Time Offer

25%

Off

Get Premium API-571 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

0/2000 characters
Submit Cancel
Stephanie
I’m leaning towards D) Velocities. Slower flow might increase corrosion risk.
upvoted 0 times
...
Amira
5 days ago
I agree, but C) Process temperatures could also be a factor. Higher temps can lead to more corrosion.
upvoted 0 times
...
Erinn
10 days ago
I think it's B) Oxygen content. Less oxygen means more corrosion.
upvoted 0 times
...
Ilona
15 days ago
Not so sure about D) Velocities being a big deal. What do you all think?
upvoted 0 times
...
Elenore
21 days ago
I agree with B) Oxygen content. Makes sense!
upvoted 0 times
...
Bok
26 days ago
Surprised it's not A) Microbiological activity! I thought that was a big factor.
upvoted 0 times
...
Frederica
1 month ago
I think it's C) Process temperatures. Higher temps usually help.
upvoted 0 times
...
Micaela
1 month ago
Definitely B) Oxygen content. Less oxygen means more corrosion.
upvoted 0 times
...
Thaddeus
1 month ago
I recall a practice question that mentioned microbiological activity, but I’m not convinced it’s the right choice for this one.
upvoted 0 times
...
Timothy
2 months ago
I’m a bit confused. I thought lower temperatures would generally reduce corrosion, but I can’t remember if that applies here.
upvoted 0 times
...
Jaime
2 months ago
I feel like we discussed how increasing velocities can help reduce corrosion, so maybe D) Velocities is the answer?
upvoted 0 times
...
Georgene
2 months ago
I think it might be B) Oxygen content, but I’m not entirely sure. I remember something about oxygen being a key factor in corrosion.
upvoted 0 times
...

Save Cancel