Root Cause Analysis on a Multistage Centrifugal Pump ... - TurboLab

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252 Vibration EMA Test 11 th Stage Impeller Modal Impact Test 2 Nodal Diameter / 0 Nodal Circle at 2620 Hz
253 Frequency (Hz) 5000 4000 3000 2000 1000 Vibration EMA Test 11 th Stage Impeller Modal Impact Test (Wet) Interference Diagram 11th Stage of 2 1/2 RLIJ Pacific Pump (Wet Impeller) 6 Rotating Vanes and 8 Diffuser Vanes 0 0 1 2 3 4 5 6 Nodal Diameter Interference Diagram 1x VPF 1x Diff VPF 2x Diff VPF 1x V_Dir_Exc 1x V_Dif_Exc 2x V_Dir_Exc 0NC
Page 1 and 2: 241 Root C
Page 3 and 4: 243 Introduction Barrel Type - 11 s
Page 5 and 6: 245 Background History • Three pu
Page 7 and 8: 247 Background History 2007 Failure
Page 9 and 10: 249 11 th Stage Impeller EMA Testin
Page 11: 251 Impeller Model Vibration EMA Te
Page 15 and 16: 255 Vibration Monitoring Pump 1B Ty
Page 17 and 18: 257 [mil] [mil] Autospectrum(Signal
Page 19 and 20: 259 Experimental Modal Anal
Page 21 and 22: 261 Operating Deflection Shape •
Page 23 and 24: 263 Operating Deflection Shape Pump
Page 25 and 26: 265 Operating Deflection Shape Pump
Page 27 and 28: 267 Axi-symmetric Model and FEA Bre
Page 29 and 30: 269 Axi-symmetric Model Impeller Lo
Page 31 and 32: 271 Axi-symmetric Model FEA Results
Page 33 and 34: 273 FEA-Based Fracture Mechanics Ap
Page 39 and 40: 279 Conclusions • The root cause
Page 41 and 42: 281

Root Cause Analysis on a Multistage Centrifugal Pump ... - TurboLab

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