ULTRASONIC ON-LINE BEARING CONDITION MONITORING TECHNOLOGY

The use of ultrasonic transducers to monitor the condition of operating bearings is discussed. Such transducers, installed in major rotating equipment, provide periodic or continuous inspection of the bearings while the equipment is running. An operating bearing's current condition is indicated with a normal operational accuracy of plus or minus .0002 in. By considering these individual measurements, the rate of change of the condition of the bearing can be evaluated. An estimate of the remaining safe operating life of the bearing can be based on the trend information. A case history is given of an installation in a 250 MW steam turbine with supporting data from over 700 days of readings. Information from an installation in a 350 MW steam turbine is also included. The system's operation and accuracy level are discussed.

• Supplemental Notes:
  • Conference paper
• Authors:
  • Haramis Jr, G T
  • Karberg, W E
  • Berris, R E
• Conference:
  • International Machinery Monitoring and Diagnostic Conference, 1st
  • Location: Las Vegas, Nevada
  • Date: 1989-9-11 to 1989-9-14
• Publication Date: 0

Media Info

• Features: References;
• Pagination: 7p.

Subject/Index Terms

• TRT Terms: Bearings; Machinery; Monitoring; Steam turbines; Transducers; Ultrasonic tests
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00659618
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM