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From Detection to Repair in a Single Day: Motor Bearing Fault Resolved

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From Detection to Repair in a Single Day: Motor Bearing Fault Resolved
Days to Resolution
0
Cost Avoidance
$ 0
Downtime Saved
0 Hours
Max Threshold Breach
0 %
  • Incident Overview

Vessel Type

Suez-Max Tanker

Detection Date

2 October 2023

Equipment

Electric Motor of M/E F.O. Circ Pump

Sensors

USB powered MEMS triaxial AdViSe sensor

Detection Method

AdViSe Handheld device

Measurement Frequency

1 measurement every 3 months
It was early October 2023 when routine measurements were carried out on a Suez-Max tanker using the AdViSe Handheld system. The Electric Motor of the Main Engine Fuel Oil Circulation Pump No.1 appeared to be running normally, with no alarms or visible signs of distress. Yet, the vibration data told a different story. Elevated RMS acceleration and peak-to-peak values were recorded on both drive-end and non-drive-end bearings, revealing early signs of wear long before a failure could occur. Thanks to AdViSe, the issue was flagged in time, preventing costly downtime and avoiding an estimated $3,840 in damages.
  • Problem Identification

Detected Symptom

Elevated RMS acceleration and Peak-to-Peak values at NDE & DE bearings.

Fault Type

Bearing Wear

Signal Characteristics

  1. 01.
    Initial deviation detection (2 October 2023)

  2. 02.
    Abnormal values confirmed via trend analysis and threshold breach

  3. 03.
    Onboard technician confirmed wear upon inspection

  • Actions & Corrective Measures

Action Taken

Replacement of both bearings

Repair Date

2 October 2023

Post-Repair Status

Vibration levels returned to normal
  • Conclusions
  1. 01.
    Early fault detection prevented potential motor failure and downtime.

  2. 02.
    AdViSe Handheld system accurately identified and classified the issue, allowing planned maintenance.

  3. 03.
    Diagnostic method based on spectrum analysis proved effective in real ship conditions.

  4. 04.
    Estimated cost avoidance: $3,840

Analysis Process

2023-10-02
Initial Deviation Detection
AdViSe Handheld system detected Elevated RMS acceleration and Peak-to-Peak values at NDE & DE bearings of the electric motor.
2023-10-02
2023-10-02
AdViSe Machinery Health Report
Machinery was flagged automatically via AdViSe Health Report as “Marginal” for MDE bearing & “Unacceptable” for MNDE bearing measurement point.
2023-10-02
2023-10-02
Onboard Technician's Prompt Response
Onboard technician confirmed wear upon inspection and proceeded with replacement of both bearings.
2023-10-02
Contact