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AMPP Senior Internal Corrosion Technologist Exam - Topic 3 Question 1 Discussion

You are NACE Level 2 Inspector working on a tank lining job where a mobile centrifugal blast unit is being used to blast the tank floor to a NACE No. 1/SSPC SP 5. The Contractor has completed his final blast and has called for a hold point inspection. This is the 1st time you have seen field based centrifugal blast cleaning. You observe what appears to be staining on the substrate however the Contractor assures you this is normal when using centrifugal blast units and what you are seeing is what is defined In the standard as an acceptable variation in appearance.Your FIRST preferred course of action Is to:
B) Review the standard with the Contractor and re-inspect the floor
A) Request that the Contractor re-blast the floor
C) Shut the job down
D) Call your supervisor

AMPP Senior Internal Corrosion Technologist Exam - Topic 3 Question 1 Discussion

Actual exam question for AMPP's Senior Internal Corrosion Technologist exam
Question #: 1
Topic #: 3
[All Senior Internal Corrosion Technologist Questions]

You are NACE Level 2 Inspector working on a tank lining job where a mobile centrifugal blast unit is being used to blast the tank floor to a NACE No. 1/SSPC SP 5. The Contractor has completed his final blast and has called for a hold point inspection. This is the 1st time you have seen field based centrifugal blast cleaning. You observe what appears to be staining on the substrate however the Contractor assures you this is normal when using centrifugal blast units and what you are seeing is what is defined In the standard as an acceptable variation in appearance.

Your FIRST preferred course of action Is to:

Show Suggested Answer Hide Answer
Suggested Answer: B

by Delfina at Jul 02, 2026, 12:40 PM

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Amie
2 days ago
Reviewing the standard sounds smart.
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Martina
7 days ago
I think it’s normal, but we should double-check.
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Thea
12 days ago
I feel unsure about the staining.
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Elvis
17 days ago
Wait, is it really normal? That seems a bit sketchy to me.
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Salome
22 days ago
Sounds like a normal variation, but I’d still double-check.
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Tyra
28 days ago
I’m not so sure, staining could mean it’s not cleaned properly.
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Lazaro
1 month ago
Definitely review the standard first, don’t rush into re-blasting.
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Patti
1 month ago
I’ve seen staining like that before, it’s usually fine.
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Glory
1 month ago
Wait, staining is acceptable? That’s new to me!
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Renea
2 months ago
No way, I’d just re-blast it to be safe.
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Sharmaine
2 months ago
I’d be cautious, though. Staining can mean issues.
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Miles
2 months ago
Definitely review the standard first!
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Keneth
2 months ago
I’ve seen staining before, it can be normal.
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Stephane
2 months ago
I recall a similar scenario where we had to balance contractor assurances with our own observations. I think option B is the safest bet, but I wonder if I should also consider calling my supervisor just to be cautious.
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Precious
2 months ago
I'm a bit uncertain here. I know we shouldn't just take the Contractor's word for it, but shutting down the job seems extreme. Maybe I should lean towards reviewing the standard first?
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Junita
3 months ago
This situation seems familiar from a practice question we did about acceptable variations. I feel like option B could help clarify things, but what if the staining is actually a problem?
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Chantay
3 months ago
I remember discussing the importance of understanding the standards during our training. I think reviewing the standard with the Contractor makes sense, but I'm not entirely sure if that's the best first step.
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