Should personnel who operate ultrasonic digital thickness measurement equipment be qualified and certified?

Yes, because SNT-TC-1A requires that all personnel performing NDT be qualified and certified.

No, because SNT-TC-1A does not cover that specific operation.

Only if required by industry codes, standards, and specifications.

Whether any NDT personnel should be qualified and certified depends solely upon the needs of the employer and the requirements of the employer’s customers or clientele.