RDI’s Motion AmplificationTM, finding a better way to detect premature failures!
- Captured Motion AmplificationTM (MA) videos and diagnosed the fault in the field within 1 hour
- Visualisation of the root cause (coupling wear, loose hold down bolts and failed welds) of the high axial vibration that had been difficult to identify with traditional vibration analysis techniques
- Remediation work during a low load period reduced the high axial vibration at the fan drive end bearing by more than 70%
- Solution implemented at a time when substantial
“Motion Amplification technology allowed us to identify movement in the bearing pedestal…With this knowledge and by calculating the predicted failure date the fan was proactively removed from service to repair during low load periods.”
“Maintenance Engineering Lead”
There are two Induced Draft (ID) Fans critical to the operation of each 700+ megawatt turbo generator at this Power Station. Staff had been monitoring a steady increase in axial vibration at the Fan Drive End Bearing of one of the two ID Fans for Unit 3 turbo generator. The axial vibration amplitude had increased from 1.75 mm/sec RMS to 8.5 mm/sec RMS over a 2-month period. The vibration analysts were finding it difficult to identify the root cause of the increasing trend and noise coming from the coupling through traditional vibration analysis techniques. Historically this type of fault would have been left to run to failure resulting in a $70k/hour loss of generating revenue for the business.
View the before and after video at this link along with a full range of case studies at this link.