Found with Sound Volume 11
SDT Ultrasound Solutions
Enabling our customers to achieve their operational objectives by improving the reliability of their assets.
This months wins, made possible with ultrasound condition monitoring; reliability's first line of defence.
In this edition of the Found with Sound Newsletter, we explore the rapid deterioration of assets and the importance of tailored measurement intervals, adding compressed gas cylinders to leak surveys, a BPFO inspected with both Ultrasound & Vibration, and a collection of acoustic images taken outside during 1. A High-Voltage Electrical Asset Survey & 2. A Compressed Gas & Electrical Asset Survey.
In the following video case study, Rob Dent CMRP,CRL detailed a bearing on the non-drive end of a fan motor. The initial reading taken on March 14th indicated an elevation in overall RMS which was cause for concern. Two weeks later on March 28th, follow up readings were taken which showed another large jump in overall RMS, indicating to the Partnered Ultrasound Team that this bearing had failed.
After the bearing was replaced during the next scheduled shutdown, we can see the return to normal RMS levels in the readings taken on April 11th.
The rapid failure of this bearing underscores the importance of tightening up measurement acquisition intervals when assets are nearing their end of life. As they get closer to failure, they become more unpredictable.
Compressed gas cylinders, as with all other assets in an industrial setting, can wear out and eventually no longer deliver their engineered value.?
After years of use, the threading on compressed gas cylinders can wear and leak, which can lead to safety issues if flammable or noxious gasses are leaking into the atmosphere.
Including compressed gas cylinders in your leak surveys is a good strategy to ensure zero waste as a result of worn out gas cylinders.?
The following Ball Pass Frequency Outer Race Defect was picked up by the SDT340 during a bi-weekly condition monitoring route at a Canadian Pulp & Paper Mill.?
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The bearing in question was on the bottom pocket roll of the Main Paper Machine.
The failure was first detected with ultrasound, confirmed with vibration analysis, and then replaced during the next scheduled shutdown, long before a catastrophic failure, and resulting in a total of zero lost production hours.
Our partners in Indonesia, PT Elektrika recently conducted a High-Voltage Electrical Asset Survey at a 150KV Substation.?
The SonaVu? Acoustic Imaging Camera uses Phase Resolved Partial Discharge; An algorithm for partial discharge analysis. It is a widely used method in the field of electrical analysis. We identify PRPD as Partial Discharge has a frequency range of 25 - 40 khz, we look at the signals as a pattern reflecting 360 degrees of an AC cycle to determine the specific electrical defect we are dealing with.?
The discoveries made by the PT Elektrika Service Team can be seen in the post below.?
Source: AAn Suhandar
When you’re walking around a plant looking through the lens of a SonaVu? , you never know what you might see/hear. The following is a collection of high-voltage electrical defects & compressed air and gas leaks found with the SonaVu??during an outdoor acoustic imaging survey.?
You can see all the images by clicking the link below!?
Interested in Hearing More? Subscribe to the Found with Sound Newsletter! Want to contribute? Email your cases to [email protected] or post them on LinkedIn & Tag SDT Ultrasound Solutions!