Technical Papers

Akosombo

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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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Designing Water-Bearing Test Bench

This study designed a Bearing Test Bench to evaluate wear rates and gather crucial parameter data for water-lubricated bearing materials ...

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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 ...

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