Analysis of Raw Mill Machines Maintenance in Cement Industry

Abstract

Cement processing plan is a state-owned enterprise engaged in the cement industry. The problem that this factory has is such as frequent damage to the engine. The machines used in cement production at the factory include raw mill machines, kiln machines, and cement mill machines. The more often a machine is damaged, the average time between failures of a machine is lower. So that it can cause the production process is hampered. In this study, the engine studied was the Raw Mill machine at plant. The raw mill machine functions as a main material grinder in the initial milling process such as limestone, silica stone, clay, and iron sand to become raw mix. To find out the frequency of damage to the machine or the time interval between damage to the tool (MTBF) and the length of time used to repair the tool (MTTR), the Total Productive Maintenance (TPM) method is used to perform maintenance by optimizing the effectiveness of the equipment and reducing / eliminating sudden damage (breakdown) by first identifying and then the cause of the problem is identified using fish bone analysis and Failure Mode and Effect Analysis (FMEA).