Patent ID: 7703660

Claim:
A method of applying a weld overlay to a boiler tube panel, comprising: applying a first weld bead at a crown of a wall of a boiler tube at a first location; applying a second weld bead at the crown of the wall of the boiler tube at a second location parallel to the first location on the opposite side of the tube center line axis; applying a third weld bead at a cap of the boiler tube, applying a plurality of weld beads beginning with applying an additional weld bead next to the first location, alternating parallel to the tube center line axis to apply another weld bead, and continuing to alternate and place additional weld beads when moving down the tube wall to a membrane and tube wall interface, wherein the first weld bead, the second weld bead, the third weld bead, and the plurality of weld beads extend along a longitudinal axis of the tube, the longitudinal axis being perpendicular to a line that passes through a diameter of the tube and the membrane; and applying subsequent weld beads on the membrane.