It is good practice for the NACE Inspector to have instrument calibration certificates available:

Which is a component that supplies most of the features and functions of the material?

When performing tests for oil and grease using an ultra-violet light, the NACE Inspector should be aware that:

ISO ST 3 is described as:

You ate the NACE Inspector on a job where NACE No. 2/SSPC - SP 10 has been specified. You are finding the Contractor is leaving mill scale on the on surface and as a result you have been rejecting the blast. The Contractor is very upset and has told you that the standard permits up to 5% of the mill scale to remain and still be in be in compliance with the standard.
Your FIRST preferred course of action is to: