Abstract:
A case study in a Refinery, Motor Operated Valves (MOV) is used to control the process in the refinery wide. The MOV have been working continuously without any maintenance program. So, the breakdown maintenance is arising. The average failure number is about 52 times per year. The failures potentially lead to a loss of production. Preventive maintenance by using the guide line of Reliability Centered Maintenance (RCM) is used to increase the MOV Availability and Mean Time between Failures (MTBF). The MOV criticality and Preventive maintenance task is identified by Maintenance and Engineering person. The fish bone technique is used to identify the failure cause and finally provided the solution for improvement, which is focusing on the
2 types of the critical MOV. The result is indicated that, the MTBF of High Temperature type is increased by 33.35% from 38.68 month to 51.57 month and High Temperature/High Vibration type is increased by 33.54% from 7.93 month to 10.59 month. Availability indicator; increased from 99.94% to 99.95% in High Temperature type and increased from 99.59% to 99.69% in High Temperature/High Vibration type.