Abstract: A manipulator assembly for supporting and manipulating a nozzle segment, for example of a gas turbine or a steam turbine. The assembly includes a vertical support member and a horizontal support member. The vertical support member is mounted for selective vertical displacement relative to a base and the horizontal support member is operatively coupled at a proximal end thereof to the vertical support member so as to be vertically displaced therewith and so as to be pivotable about a vertical axis of the vertical support member. A nozzle segment fixture is operatively coupled to a distal end of the horizontal support member for selectively supporting and manipulating a nozzle segment.

Abstract: A method for inspecting a turbine nozzle segment includes positioning the turbine nozzle segment on a base of a tool, with the outer forward face and the inner forward face of the turbine nozzle segment contacting a surface of the base. The outer wall is positioned between a first pedestal outer stand and a second pedestal outer stand of the tool, and the inner wall is positioned between a first pedestal inner stand and a second pedestal inner stand of the tool. At least one of a position, a depth and a width of a seal slot formed in a side edge of the outer wall and/or the inner wall is measured. At least one axial dimension of the turbine nozzle segment and at least one radial dimension of the turbine nozzle segment are measured.

Abstract: A trailing edge coupon for the trailing edge of a airfoil of a turbine nozzle segment is welded to an airfoil section of the nozzle segment having a damaged trailing edge portion removed. The coupon includes film cooling holes spaced one from the other along a pressure side wall portion of the coupon and a plurality of radially spaced openings along the trailing edge. By welding the pressure and suction side edges of the coupon to the pressure and side edges of the remaining portion of the airfoil, the operating life of the nozzle is extended.

Abstract: A trailing edge coupon for the trailing edge of a airfoil of a turbine nozzle segment is welded to an airfoil section of the nozzle segment having a damaged trailing edge portion removed. The coupon includes film cooling holes spaced one from the other along a pressure side wall portion of the coupon and a plurality of radially spaced openings along the trailing edge. By welding the pressure and suction side edges of the coupon to the pressure and side edges of the remaining portion of the airfoil, the operating life of the nozzle is extended.

Abstract: A tool for measuring seal slot position includes a tool shaft having a longitudinal axis, a pin eccentrically disposed at one end of the tool shaft relative to the longitudinal axis, and a disk member disposed at an opposite end of the tool shaft that facilitates rotation of the tool shaft and pin in the seal slot. The tool provides for increased accuracy in measuring seal slot position such as turbine nozzle seal slot position.

Abstract: A tip cap for use in a turbine bucket. The tip cap may include a shield of an oxidant resistant material and a cap positioned within the shield of a high strength material.

Abstract: Disclosed herein is a method for removing material from a turbine wheel dovetail slot. A tool is applied to a turbine wheel cooling slot. Material is removed from a selected portion of the cooling slot with the tool. And, stress concentrations are reduced within the slot through the removal of material.

Abstract: A trailing edge coupon for the trailing edge of a airfoil of a turbine nozzle segment is welded to an airfoil section of the nozzle segment having a damaged trailing edge portion removed. The coupon includes film cooling holes spaced one from the other along a pressure side wall portion of the coupon and a plurality of radially spaced openings along the trailing edge. By welding the pressure and suction side edges of the coupon to the pressure and side edges of the remaining portion of the airfoil, the operating life of the nozzle is extended.