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A fillet weld is a triangular weld used to join two surfaces that are at approximately right angles to each other. i.e., lap, tee and corner joints are normally welded with a fillet weld.

The self-consuming technique can also be used for fillet welding in the vertical position by following the same steps outlined above for horizontal fillet welding.

STRENGTH OF UNDERWATER FILLET WELDS

The defect may be in a single run fillet weld requiring only a small amount of metal to be removed or it may be a large crack extending deep into parent metal.

In making fillet welds, pay particular attention to lead angles and work angles. The work angle is the angle between the electrode and the work in a plane at right angles to the long axis of the joint. The lead angle is the angle between the electrode and joint in the direction of travel.

Before a welding repair is carried out the need for repair must be carefully considered. If a component or structure contains defects of a known size, whether these are fabrication or service defects,