Abstract: A method for repairing a rotor of a turbine includes providing a rotor having a groove portion defined by a circumferential portion of the rotor. The circumferential portion of the rotor is removed to create an opening to provide access to the groove such that the opening, immediately adjacent the groove, is narrower than the groove. A guide block may be extended into a receiving slot separating a first protruding surface from a second protruding surface of the rotor such that a weld area slot of the guide block extends over at least a portion of the opening. The opening may be welded adjacent the guide block to close at least a portion of the opening.

Abstract: Methods and apparatus for determining deflection of an equipment foundation, for example, a steam turbine foundation, are disclosed. The apparatus includes a laser beam source positioned to direct a laser beam above a surface of the foundation to be monitored, a plurality of targets positioned above the surface of the foundation, a detector adapted to detect a position of each if the targets relative to a position of the laser beam; and a device for comparing the detected position of each of the targets with a predetermined position to determine changes in the position to determine deflection of the foundation. Methods and various targets for implementing the invention are also disclosed.