Relationship between reliability centered maintenance and condition monitoring (Case study)
Abstract
In this paper, the effective role of and the relationship between reliability centered maintenance (RCM) and condition monitoring (CM) techniques (vibration analysis, sound, and oil and failure analysis) are considered in one of the vital petrochemical equipment. Given the critical role of MX-840 extruder in the production of the Tabriz Petrochemical Complex, the machine is a critical machine with a degree A and a sensitivity score of 92 to 100. As a result, the RCM method was applied to the machine and was under the care and condition monitoring. By observing the increase in sound and the first failure symptoms, the weekly monitoring of the equipment was placed on the CM unit agenda. By examining the trend of increasing the wearing index in the oil analysis results, the increase of HDm (High Definition Technology) in the data acquisitions of Shock Pulse technology and also the observation of the failure frequency of one of the gears with the mid-shaft harmonics, the CM department reported an increase in the clearance of the bearings and the beginning of failure. After the technical meetings, the study of the process behavior of equipment and technical and repair data, it was decided to take the equipment apart and its internal parts be inspected. Observations inside the equipment during its maintenance process and the results of post-repair analyses showed that the RCM, CM, and Failure Mode Effective Analysis (FMEA) applications are of great importance in care and are well suited for timely diagnosis of defect, and can be used by the above tools and experienced technicians to stop and prevent financial, safety and environmental damage.
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