Electronic Theses and Dissertation

PT Perkebunan Nusantara IV Kebun Adolina adalah perusahaan yang bergerak
pada bidang agroindustri pengolahan kelapa sawit, menghasilkan crude palm oil
dan palm kernel. Permasalahan yang melatar belakangi penelitian yaitu
peningkatan oil losss pada fiber press yang berdampak tidak tercapainya rendemen
yang diharapkan perusahaan, realita yang terjadi terdapat 0,32% minyak yang
terbuang dari maksimal losses 4% dan kekurangan 1,82% rendemen dari yang
diharapkan yaitu 23%. Tujuan penelitian untuk mengukur efektivitas mesin screw
press nomor 2,3, dan 4 dengan metode Overall Equipment Effectiveness (OEE) dan
six big losses. Hasil perhitungan OEE mesin screw press 2,3 dan 4 diperoleh nilai
rata-rata secara berurutan yaitu 34,29%, 35,97% dan 34,92%. Nilai OEE yang
rendah diakibatkan oleh faktor availability dan performance yang belum memenuhi
standar nilai OEE. Hasil analisa six big losses diketahui losses yang berkontribusi
besar pada penurunan efektivitas mesin screw press ialah idle and minor stoppage
losses, rata-rata idle and minor stoppage losses pada mesin screw press 2,3 dan 4
secara berurutan ialah 14,39% dengan total time losses 315,33 jam, 11,51% dengan
total time losses 247,667jam, dan 12,75% dengan total time losses 328,5 jam.
Penyebab idle and minor stoppage losses karena sering terjadi waktu henti untuk
menunggu kedatangan bahan baku, yang menghasilkan akumulasi waktu henti yang
cukup signifikan. Rekomendasi perbaikan untuk mengatasi permasalahan adalah
mengevaluasi ketersediaan bahan baku dan jadwal kedatangan bahan baku agar
tidak menganggu proses produksi dan menggunakan alternatif alat deteksi
kematangan TBS untuk mempercepat proses penyortiran.
Kata kunci : Overall Equipment Effectiveness (OEE), six big losses, mesin screw
press, Root Cause Analysis (RCA), Total Productive Maintenance
(TPM)

PT Perkebunan Nusantara IV Kebun Adolina is a company engaged in agro industrial processing of oil palm, producing crude palm oil and palm kernel. The problem behind the research is the increase in oil loss in the fiber press which has an impact on not achieving the expected yield of the company, the reality that occurs is 0.32% of oil wasted from a maximum of 4% losses and a shortage of 1.82% yield from the expected 23%. The purpose of the study was to measure the effectiveness of screw press machines number 2, 3, and 4 with the Overall Equipment Effectiveness (OEE) method and six big losses. The results of the OEE calculation of screw press machines 2, 3 and 4 obtained an average value of 34.29%, 35.97% and 34.92% respectively. The low OEE value is caused by availability and performance factors that have not met the OEE value standards. The results of the analysis of the six big losses are known losses that contribute greatly to the decrease in the effectiveness of screw press machines are idle and minor stoppage losses, the average idle and minor stoppage losses on screw press machines 2, 3 and 4 are 14.39% with total time losses of 315.33 hours, 11.51% with total time losses of 247.667 hours, and 12.75% with total time losses of 328.5 hours. The cause of idle and minor stoppage losses is due to frequent downtime to wait for the arrival of raw materials, which results in a significant accumulation of downtime. Recommendations for improvement to overcome the problem are to evaluate the availability of raw materials and the arrival schedule of raw materials so as not to disrupt the production process and use alternative FFB maturity detection tools to speed up the sorting process. Keywords : Overall Equipment Effectiveness (OEE), six big losses, screw press machine, Root Cause Analysis (RCA), Total Productive Maintenance (TPM)