Definition
The amount of weld that is below a straight line drawn from the edges of the joint preparation of a groove weld, with the exception of allowable undercut.
Preventive Action
1. During welding of the reinforcement, gauge bead heights in any location that appears to be lower than the rest of the bead.
2. Adjust amps/volts.
3. Slow travel speed to allow increased weld puddle volume.
4. Sequence weld passes so that the toes of the beads sufficiently cover one another, minimizing valleys.
Corrective Action
Continue to add weld beads until the joint is completely filled.
