A nuclear power generating station was looking for answers after both main steam turbine generator trains lost their bearing lift oil systems after each experienced the failure of a one inch oil supply pipe. MSI was contracted to investigate the failures, find the root cause, and develop a solution to prevent future failures.
Picture and isometric drawing views of the bearing lift oil system investigated.
Image of a failure at the bottom of the guarded pipe.
Image of a failure at a joint 3 feet from the bottom of the guarded pipe.
Dynamic Pressure Transducer FFT.
Images of Finite Element Analysis.
Piping modifications implemented.
A steam turbine at a waste-to-energy facility in the Northeast underwent a scheduled repair, at which time the turbine bearings were reworked, after which the turbine periodically experienced very high amplitude shaft vibrations.
A boiler feed pump (BFP) driven off of the main steam turbine via a fluid drive was experiencing high vibration levels leading to frequent replacement of the fluid drive bearings.
MSI was contracted to understand and help solve a high vibration problem on an aero-derivative gas turbine driven generator.