Operating Manual

129128
Internal concavity (suck back).
An elongated irregular darker density with fuzzy edges, in the
centre of the width of the weld image.
Burn through.
Localized darker density with fuzzy edges in the centre of the
width of the weld image. It may be wider than the width of the
root pass image
Incomplete - or Lack of Penetration (LoP)
A darker density band, with very straight parallel edges, in the
center of the width of the weld image.
Interpass slag inclusions.
Irregularly-shaped darker density spot, usually slightly
elongated and randomly spaced.