Eish has some tips for UT:
Envisage what you are seeing below the inspection surface .
Know the variations of material’s grain structure that you could encounter.
How important are DAC curves to you?
Keep all equipment stored in a suitable bag or container as probes like to hide themselves when you need them most.
Always have a tin of solvent pre-cleaner and rags with you. They can make a difference in improving scanning speed, lessening probe wobble and probe direction i.e. acquire a clean surface.