Evaluasi Perbaikan Ripple Mill terhadap Efisiensi dengan  Metode FMEA di PTPN IV Adolina

Daniel Natanael Manalu; Jon Judiarto Siregar; Jufri Antoni; Jusra Tampubolon

doi:10.61132/manufaktur.v3i2.1054

Authors

Daniel Natanael Manalu Universitas Prima Indonesia
Jon Judiarto Siregar Universitas Prima Indonesia
Jufri Antoni Universitas Prima Indonesia
Jusra Tampubolon Universitas Prima Indonesia

DOI:

https://doi.org/10.61132/manufaktur.v3i2.1054

Keywords:

Efficiency, FMEA, Machine Maintenance, Ripple Mill, RPN

Abstract

The Ripple Mill machine is one of the vital components in a Palm Oil Mill (PKS) that functions to separate the palm kernel from its shell. This process is very important because the quality and quantity of the palm kernel produced will directly affect the economic value and production efficiency in the palm oil industry. At PTPN IV Regional II Plantation Unit and Adolina PKS, various technical problems were found that caused a decrease in machine performance, including rotor bars and square bars that experienced wear due to age and improper machine settings. In addition, other damage that often occurs is a broken van belt due to age and excessive tension, feeder motor dysfunction caused by excessive load, and motor overheating that occurs due to age and high workload. To overcome these problems, this study uses the Failure Mode and Effect Analysis (FMEA) method. This method aims to identify various potential failures, assess the severity, frequency of occurrence, and detection capability, so that the Risk Priority Number (RPN) value can be calculated as a basis for repair priorities. The results showed that worn rotor bars and worn square bars had the highest RPN values, each at 280, equivalent to 40.23% of the total identified risks. This indicates that these two components are critical points requiring immediate repair and maintenance attention. Applying FMEA in this context provides tangible benefits, including helping the company formulate a more targeted maintenance strategy, reducing the risk of recurring damage, and minimizing downtime that impacts production. With more systematic maintenance, operational efficiency can be improved while extending the lifespan of the Ripple Mill machine.

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