Analisis Kegagalan Perawatan pada Mesin Screw Press Pengolahan Kelapa Sawit dengan Metode Failure Mode and Effect Analysis (FMEA)

Abstract

PT Tolan Tiga Indonesia Perlabian Palm Oil Mill is a palm oil processing plant that produces final products such as crude palm oil (CPO) and kernel. The Company has already implanted preventive maintenance, corrective maintenance, and predictive maintenance methods. However, unexpected breakdowns often occurs due to several possible factors. The machine that experienced the most downtime was the screw press machine, which had 65 instances from January to July 2024. Based on the high frequency of breakdowns in the screw press machine, a maintenance failure analysis is necessary. The analysis method used is Failure Mode and Effect Analysis (FMEA). Based on FMEA results, the Risk Priority Number (RPN) calculation is performed to determine the critical components of the machine. An analysis using Fault Tree Analysis (FTA) is conducted on the components with the highest RPN. The FMEA results indicate that the most critical part is the Intermediate Body and Cone Section. The components with the highest RPN are Worm Screw with RPN of 224 and Press Cage with RPN of 210. The FTA results indicate the need for increased supervision of operators, additional training for operators and mechanics, scheduling for component realignment and maintenance inspection on each component, stricter cleaning area regulation, and evaluation of the specification, lifespan, and capacity of the machine and components.