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Technical Papers

Research, case studies, and technical documentation from Hydro Tech

Akosombo GS – 1020 MW PTFE Thrust Bearing Solution

After installing high-performance turbine runners during a major overhaul, Akosombo GS had experienced increased thrust bearing operating temperatures and cavitation on its thrust bearing pads.…

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Case Study of an S-Turbine Seal Failure

Hydro Tech was called to the Dolgeville Generating Station in January 2018 to review the history of seal failures that occurred from 1987 through 2017.…

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PTFE Thrust Bearing Retrofit

A single unit station had experienced recurrent thrust bearing failures. The unit is a 9000 HP, Kaplan-type runner that started commercial operation in 1938. A…

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SKQ (Kerr) GS PTFE Thrust Bearing Replacement

After a 90 MW generator’s thrust bearing failed it was determined the best path forward was to install PTFE lined thrust bearings due to their…

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Thrust Bearing Cavitation

A multiple unit generating station is currently experiencing thrust bearing failures due to cavitation pitting on the thrust shoes… on and around the high pressure…

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Upgrading Marginal Thrust Bearings

One of the most common causes of unscheduled hydraulic turbine shutdowns is the failure of thrust bearings, commonly referred to as “a wipe.” Under pressure…

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Designing Water-Bearing Test Bench

In this study, a Bearing Test Bench was designed to assess wear rates under various loading conditions and to collect critical parameter data for water-lubricated…

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Ontario Power Generation Pumped Storage Generator

Ontario Power Generation’s Sir Adam Beck – Pump Generating Station (PGS) experienced recurrent bearing failures into the early 1990’s, at which time there was an…

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Eliminating Oil and Plastic Pollution

Exploring the Sustainable Power of Lignum Vitae Presented at the 2025 FPS-SWST Joint Convention, this paper investigates how newly harvested Lignum Vitae, a historically renowned hardwood,…

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