Vibration surveillance: Oil rig – Power generator

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The Wi-care™ system is the latest wireless condition monitoring system from I-Care. The system has been designed to detect measure and analyze the root causes of excessive levels of vibration and temperature. The Wi-care system is a cost-effective tool used to report any vibration or temperature deviation in a short time. I-CARE team of engineers using the data from Wi-care is able to give you a condition monitoring remote diagnosis at any time 24 hours a day/7 days a week. Exceeding an alarm level automatically induces the collection of the vibration spectrum and the recording of temperature data. The analyst can then easily make an appropriate remote diagnosis. Go for wireless, save money, save installation costs and time!

 The following case study describes and explains a typical remote analysis application of an internal bearing friction detection/trending. Case study is done on a power generator dedicated to oil rigs.

 Equipment, plant overview, Context

Oil rigs are located in Gulf countries, Emirates.Rigs are operating 24/7 and powered by quite big power generator 436 kW. According to operator, generator was running at higher temperature than expected. Due to the periodic displacement of the generator in the oil field, no wired monitoring system was possible. The Wi-care sensors (6) where installed on the Diesel engine and the generator in both axial and radial direction. Considering travel expenses and delay for accessing, I-Care suggest the installation of Wi-care wireless vibration/temperature monitoring.

Analyst diagnosis and spectrum justification:

On the generator, we see a lot of noise coming from the lubrication of the bearing. The amplitudes are quite high and we recommend checking the lubrication system in the next month.

Actions and delays.

1) We recommend verifying the generator lubrication system in the month (quantity and quality)

2) We recommend having a continuous vibration surveillance of lubrication after action using Wi-care

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Nicolas Bleret, I-care, Belgium
Business Development director

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