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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:
Suggested Answer: B
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26 comments · newest first
TE
Tequila
8 hours ago
Agreed, B seems best. Can't just shut it down without checking.
JE
Jess
5 days ago
I think I’d go with B. Need to review the standard first.
MA
Martina
11 days ago
Good plan, let’s get clarity.
TH
Thea
16 days ago
I’ll suggest reviewing the standard.
HE
Helaine
21 days ago
Agreed, let’s keep it moving.
AM
Amie
26 days ago
Shutting down seems extreme.
MA
Martina
1 month ago
Then we can decide on re-blasting.
TH
Thea
1 month ago
What if it’s not acceptable?
HE
Helaine
1 month ago
I’d go for a re-inspection first.
AM
Amie
2 months ago
Reviewing the standard sounds smart.
MA
Martina
2 months ago
I think it’s normal, but we should double-check.
TH
Thea
2 months ago
I feel unsure about the staining.
EL
Elvis
2 months ago
Wait, is it really normal? That seems a bit sketchy to me.
SA
Salome
2 months ago
Sounds like a normal variation, but I’d still double-check.
TY
Tyra
2 months ago
I’m not so sure, staining could mean it’s not cleaned properly.
LA
Lazaro
3 months ago
Definitely review the standard first, don’t rush into re-blasting.
PA
Patti
3 months ago
I’ve seen staining like that before, it’s usually fine.
GL
Glory
3 months ago
Wait, staining is acceptable? That’s new to me!
RE
Renea
3 months ago
No way, I’d just re-blast it to be safe.
SH
Sharmaine
3 months ago
I’d be cautious, though. Staining can mean issues.
MI
Miles
3 months ago
Definitely review the standard first!
KE
Keneth
4 months ago
I’ve seen staining before, it can be normal.
ST
Stephane
4 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.
PR
Precious
4 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?
JU
Junita
4 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?
CH
Chantay
4 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.