UPAYA PENINGKATAN EFEKTIVITAS MESIN PADA PROSES PRODUKSI DI PT MEGA JAYA LOGAM MENGGUNAKAN METODE OVERALL EQUIPMENT EFFECTIVENESS EFFORTS TO INCREASE MACHINE EFFECTIVENESS IN THE PRODUCTION PROCESS AT PT MEGA JAYA LOGAM USING THE OVERALL EQUIPMENT EFFECTIVENESS METHOD

Nengsih, Mey Surya and Suseno, Suseno (2023) UPAYA PENINGKATAN EFEKTIVITAS MESIN PADA PROSES PRODUKSI DI PT MEGA JAYA LOGAM MENGGUNAKAN METODE OVERALL EQUIPMENT EFFECTIVENESS EFFORTS TO INCREASE MACHINE EFFECTIVENESS IN THE PRODUCTION PROCESS AT PT MEGA JAYA LOGAM USING THE OVERALL EQUIPMENT EFFECTIVENESS METHOD. Tugas Akhir thesis, University of Technology Yogyakarta.

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Abstract

ABSTRAK PT Mega Jaya Logam merupakan perusahaan yang bergerak di bidang pengecoran logam yang memproduksi beberapa logam seperti manhole. Perusahaan ini selalu mengutamakan kualitas produk dengan memperhatikan produktivitas produk untuk menjaga kepercayaan buyer, oleh sebab itu perusahaan ini maju cukup pesat. Dalam pembuatan produk manhole, terdapat beberapa kerusakan pada tanur induksi membuat waktu produktif jadi terganggu akibat terjadinya downtime. Pada bulan Januari 2023 terjadi kerusakan pada tanur induksi yang menyebabkan downtime selama 240 menit atau 4 jam membuat produksi berjalan tidak optimal. Hal itu dapat menimbulkan waste time, bahkan kerusakan yang sering dialami mesin akan mengganggu kualitas produk. Untuk mengurangi terjadinya downtime maka perlu dilakukan penerapan Total Productive Maintenance (TPM) dengan memanfaatkan perhitungan Overall Equpment Effectiveness (OEE) dan menghitung kerugian utama yang timbul menggunakan metode Six Big Losses. Setelah itu mengidentifikasi penyebab menurunnya efektivitas tanur induksi dengan diagram sebab akibat dan upaya perbaikan menggunakan 5W+1H. Diketahui nilai OEE yang didapat berdasarkan persentase efektivitas tanur induksi sebesar 67,36% < 85 standar JIPM. OEE juga melakukan pengukuran tiga rasio utama di mana availability ratio yang didapat 95,69%, performance ratio sebesar 75,47%, dan quality ratio sebesar 92,89%. Kerugian berdasarkan rendahnya OEE dihitung menggunakan six big losses dengan persentase kerugian tertinggi pada reduced speed losses mencapai 23,49%. Berdasarkan diagram sebab akibat, beberapa faktor penyebab menurunnya efektivitas mesin yaitu pasir silika menipis, tungku retak, penyanggah patah, dan pipa pendingin tersumbat. Oleh sebab itu, dilakukan upaya perbaikan berdasarkan faktor dan penyebab permasalahan menggunakan metode 5W+1H. Kata Kunci: Downtime, OEE, Six Big Losses, Efektivitas ABSTRACT PT Mega Jaya Logam is a company engaged in the metal casting sector which produces several metals such as manholes. This company always prioritizes product quality by paying attention to product productivity to maintain buyer confidence, therefore this company is progressing quite rapidly. In the manufacture of manhole products, there are several defects in the induction furnace that disrupt productive time due to downtime. In January 2023 there was damage to the induction furnace which caused downtime of 240 minutes or 4 hours making production not optimal. This can cause waste time, even damage that is often experienced by the machine will interfere with product quality. To reduce downtime, it is necessary to apply Total Productive Maintenance (TPM) by utilizing the Overall Equipment Effectiveness (OEE) calculation and calculating the main losses that arise using the Six Big Losses method. After that identify the cause of the decreased effectiveness of the induction furnace with a cause and effect diagram and improvement efforts using 5W+1H. It is known that the OEE value obtained based on the percentage of effectiveness of the induction furnace is 67.36% < 85 JIPM standard. OEE also measures three main ratios where the availability ratio is 95.69%, the performance ratio is 75.47%, and the quality ratio is 92.89%. Losses based on low OEE are calculated using six big losses with the highest percentage of losses at reduced speed losses reaching 23.49%. Based on the cause and effect diagram, several factors causing the decrease in engine effectiveness are thinned silica sand, cracked furnace, broken supports, and clogged cooling pipes. Therefore, improvement efforts are made based on the factors and causes of the problem using the 5W+1H method. Keywords: Downtime, OEE, Six Big Losses, Effectiveness

Item Type:	Thesis (Skripsi, Tugas Akhir or Kerja Praktek) (Tugas Akhir)
Subjects:	T Technology > TS Manufactures
Divisions:	Fakultas Sains dan Teknologi > S1 Teknik Industri
Depositing User:	Kaprodi S1 Teknik Industri UTY
Date Deposited:	27 Jul 2023 03:41
Last Modified:	27 Jul 2023 03:41
URI:	http://eprints.uty.ac.id/id/eprint/13264

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