Technical Papers • Hydro Tech

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...

Upgrading Marginal Thrust Bearings

One of the most common causes of unscheduled hydraulic turbine shutdowns is the failure of thrust bearings, commonly referred to...

Akosombo GS – 1020 MW Thrust Bearing Solution

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

SKQ (Kerr) GS 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 Bearing Retrofit

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

Thrust Bearing Cavitation

A multiple unit generating station is currently experiencing thrust bearing failures due to cavitation pitting on the thrust shoes… on...

Thrust Bearing PTFE Re-Design for Pump Storage Generator

Across North America, many pump generating stations exist, with several of them, being plagued by thrust bearing failure. All pump...