Evaluation Wall Thickness defects and flaws must release an alarm, trend and record. Also the system must have an output for a marking device. A delay between test position and marking device should be considered. This is again a pre-condition to assist the operator when adjusting the optimum parameter settings. Some have the opinion, that the great effort is not necessary.
Skilled operators are necessary for the system displayed.
The suppliere must deliver a good system's manual and also a operator training at customer's side. The training courses sometimes offered by NDT organizations, are often not well suited, because they are to general and focused on steel applications. Rolf Diederichs 18.