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Vibration measurements, analysis and diagnosis
Start-up Trend
Steam Turbine 1X Amplitude, Phase and Speed vs. Time
Start-up Cascade diagram
Gas Turbine - Bearing absolute vibration Cascade diagram
Start-up and loading trend with rubs
Start-up Trend
Steam Turbine 1X Amplitude, Phase and Speed vs. Time
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Measurements
The measurements have to be performed during the entire transient and stabilized speed, load conditions and function of the equipment characteristics with proximity and/or absolute vibration sensors installed at bearings location.
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Measurements and analysis of absolute and relative vibrations, multiple speed and phase, expansion and process parameters using additional sensors or the machine sensors.
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Analysis format: Waveform, FFT, Trend, Polar Plot, Bode/ Niquist, Shaft Centreline/Orbit, Cascade, Envelope, etc.
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