On-Site Rehabilitation Capabilities for the Nineties

Rinehart, Stephen D.; Stinson, F. Craig; ,

On-Site Rehabilitation Capabilities for the Nineties

by Stephen D. Rinehart, Voith Hydro Inc, York, United States,
F. Craig Stinson, Voith Hydro Inc, York, United States,

Document Type: Proceeding Paper

Part of: Waterpower '91: A New View of Hydro Resources

Abstract:

This paper will review recent technological advancements in on-site manufacturing and machining capabilities which have been developed for the proper installation of new hydro turbines. It will emphasize the capabilities presently available and investigate the cost effectiveness of on-site rehabilitation of hydro turbine/generator components as it compares to factory refurbishment. Due to the aging of the majority of hydro installations throughout North America many units will require rehabilitation during this decade. It is common to rehabilitate the rotating and completion components of hydro turbine/generator units. The decision to bring the embedded parts back to original equipment manufacturer (O.E.M.) specifications should also be seriously considered. The desire to obtain high efficiencies of hydro generating units require tight tolerances for both new and rehabilitated units. Installation procedures are changing. In addition, it has become difficult to adequately control the thermal growth and concrete displacement problems associated with the installation of embedded parts of new units, as well as the concrete growth and settling problems associated with existing plants.

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