Welding processes and weld defects; properties of X- and gamma-rays; sensitometry; film selection; film processing and spurious indications; factors controlling contrast and definition; X- and gamma-ray equipment; ionising radiation hazards; regulations; use of screens and filters; selection of angle of aspect; image quality indicators; defect depth location; castings; reporting.

The minimum required duration of training, which includes both theoretical and practical elements, is:

Some content comes here.

The minimum duration for experience prior to or following success in the qualification examination is: