Centrifugal blast cleaning requires:

When performing inspection in accordance with ASTM D 4138 the Inspector will use:

Coating surveys may include which steps?
Select All That Apply:

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 1 st 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:

NACE/SSPC Water Jetting standards are directly equivalent to ISO Abrasive Blast Standards: