Problem: Rotor vibration problems since installation in 1960. Sensitive to load and steam conditions. Typical 4-pad tilting pad bearings.

Solution: TRI's retro-fit package of two TRI Align-A-Pad bearings. Installed in less than a two week outage. Separated the clearance control from alignment, simplifying both processes.

Result: Low-amplitude vibrations. During a major boiler upset, no change in amplitude was detected when previously such an upset would have caused excessively high amplitude vibration.

Problem: Machine suffered damaged journals due to lube oil supply problems. Non-standard journal diameters resulted.

Solution: TRI designed and manufactured four TRI Align-A-Pad bearings, each with the required features for the application. One bearing was fully insulated.

Problem: The original 16" diameter generator bearing was made of cast iron, and after 30+ years and a few times being rebabbitted, cracks were found on the outer surface.

Solution: TRI manufactured a replacement bearing using forged carbon steel and high strength babbitt.

Problem: This turbine was supplied with fixed bore bearings. From time to time, oil whip occurred resulting in high amplitude rotor vibrations. Speed and load changes were required to temporarily resolve the problem with this marginally stable machine.

Solution: A TRI Align-A-Pad bearing was designed for one of the drive end bearings.

Result: Minimal work was required to install the bearing. The new bearing resulted in a major improvement in vibration.