Effectivity analysis of raw mill 4R1 and 4R2 using Overall Equipment Effectivity (OEE) Method and Six Big Losses in Indarung IV Plant of PT Semen Padang

Abstract

Abstract Machine is one of the important things in industry today. For a company that produces products in a great value, it is impossible for company to employ a human for the production process. Similar to humans, machines also have limitations in their use. PT Semen Padang is the first cement producer in Indonesia which currently has 5 factories. Indarung IV Plant has a production capacity of 1,620,000 tons per year. During operation to produce raw mix, Raw Mill also suffers from interference that hinders operation of Raw Mill itself. Based on that condition, the problems that will identified in this research are measuring effectiveness of Raw Mill 4R1 and 4R2 using Overall Equipment Effectiveness (OEE) method and determine factors that affect the effectiveness of Raw Mill 4R1 and 4R2 using Six Big Losses method. The result of this research is the effectivity of the Raw Mill 4R1 and 4R2 that is equal to 60% and 72%. The value of OEE is still below the International Company standard of 85% or more. Based on the six losses that occur on the machine, the most losses cause the Raw Mill 4R1 and 4R2 engine to lose its effectiveness is Breakdown Losses.