46: Data Interpretation Issue
Definition/Typical Issues
Were the data collected in the field being improperly interpreted? Was there a failure to perform the data analysis?
Examples
Example 1
- Vibration data were collected from numerous grinders in the facility. However, no data analysis was being performed because the company's only reliability engineer had recently left the company.
Example 2
- Vibration data were collected from numerous grinders in the facility. However, the data was being interpreted by someone who was not trained in this task. As a result, numerous impending failures were not diagnosed and some repairs were being implemented that were not required.
Example 3
- High vibration readings generally indicated a bearing problem in the pump. The mechanics replaced the bearing even though it did not look worn or damaged. When the pump was restarted, the high vibration readings were still present. The pump impeller had been damaged and caused the high vibration. This was not considered as a potential cause of the high vibration.
Typical Recommendations
- Provide training for personnel on interpretation of condition-based monitoring data.
- Assign interpretation of condition-based monitoring data to a specific individual or group within the facility.
- Periodically audit the condition-based monitoring program to ensure that data interpretation is being properly performed.
- Perform maintenance activities in accordance with the equipment reliability program.
- If equipment is found to be deficient, promptly remove the equipment from service or implement appropriate safeguards to ensure safe operation pending repair or replacement.
- Review maintenance records to assess the effectiveness of the condition-based maintenance program.
- If the rate of change in equipment condition is faster than anticipated, determine whether there is other equipment that might also be affected by the same conditions that caused the unexpected condition or deficiency and conduct appropriate inspection or test activities to determine whether it is still fit for service.
Cross-References
| Version 10 Element(s) | |
|---|---|
| Node ID | Node Name |
| 39 | Troubleshooting/Corrective Action LTA |
| Maritime Element(s) | |
|---|---|
| Node ID | Node Name |
| 49 | Troubleshooting/Corrective Action Issue |