Operating Manual

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Cluster porosity.
Rounded or slightly elongated darker density spots in clusters
with the clusters randomly spaced.
Root pass aligned porosity.
Rounded and elongated darker density spots that may be con-
nected, in a straight line in the centre of the width of the weld
image.
Transverse crack
Feathery, twisting lines of darker density running across the
width of the weld image.
Longitudinal crack
Feathery, twisting line of darker density running lengthwise
along the weld at any location in the width of the weld image.