Pratiwi, Monica (2019) Penjadwalan Multi Produk Pada Lini Filling Parallel Dengan Pertimbangan Setup Time, Release Time Dan Machine Eligibility Restriction. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
PT Bayer Indonesia Divisi Cropscience memproduksi pestisida yang terdiri dari wujud powder, liquid dan pasta. Saat ini nilai OEE departemen produksi masih berada pada angka 68% yang disebabkan oleh rendahnya availabilitas. Availabilitas yang rendah disebabkan oleh besarnya total duration loss dengan faktor penunjang utama adalah change over. Change over terjadi apabila terdapat proses setup. Tingginya change over menandakan sering terjadi pergantian produk pada lini produksi. Penelitian ini bertujuan untuk menentukan penjadwalan produksi pada lini filling parallel sehingga dapat meminimasi terjadinya proses setup. Lini filling parallel terbagi menjadi dua jenis yaitu identic parallel dan uniform parallel. Dalam melakukan penjadwalan terdapat hal yang dipertimbangkan yaitu sequence dependent setup time, release time dan machine eligibility restriction. Permasalahan diselesaikan dengan pendekatan heuristik Longest Processing Time (LPT) – Least Flexible Job (LFJ), Hungarian Method dan kemudian hasil diperbaiki dengan Variable Neighborhood Search (VNS). Dalam penelitian ini juga dilakukan perbandingan model penjadwalan yang dimiliki oleh PT Bayer Indonesia Divisi Cropscience dengan algoritma yang dikembangkan. Total duration loss juga akan dibandingkan untuk melihat performansi dari algoritma yang dikembangkan. Dengan melakukan penerapan algoritma yang dikembangkan, total duration loss untuk produk powder berkurang sebesar 9.47% dan untuk produk liquid berkurang sebesar 17.56%.
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PT Bayer Indonesia Cropscience Division produces pesticide in form of powder, liquid and pasta. Current OEE of production department is still at 68% due to low availability value. Low availability value is caused by high total duration loss with changeover as the main supporting factor. Changeover occurs for each setup process on production line. High frequency of changeover indicates that frequent product change occurs production line. This research aims to develop production scheduling in parallel filling line that can minimize the frequency setup process. Parallel filling line is divided into two: identic parallel and uniform parallel. In developing production scheduling, there are considerations which are sequence dependent setup time, release time and machine eligibility restriction. This problem is solved with heuristic approach that divided into constructive phase and improvement phase. Constructive phase consists of Least Flexible Job (LFJ) – Longest Processing Time (LPT) and Least Flexible Job (LFJ) – Hungarian Method. Variable Neighborhood Search (VNS) is applied on the improvement phase. This research will compare the actual scheduling model to the proposed heuristic approach. Besides, this research will also compare total duration loss to see the performance of the proposed heuristic approach. With the implementation of proposed heuristic approach, total duration loss can be reduced up to 9.47% for scheduling powder product and up to 17.56% for scheduling liquid product.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSI 658.53 Pra p-1 2019 |
| Uncontrolled Keywords: | Least Flexible Job, Longest Processing Time, Production Scheduling, Optimization, Variable Neighborhood Search |
| Subjects: | T Technology > T Technology (General) T Technology > T Technology (General) > T58.6 Management information systems |
| Divisions: | Faculty of Industrial Technology > Industrial Engineering > 26201-(S1) Undergraduate Thesis |
| Depositing User: | Monica Pratiwi |
| Date Deposited: | 28 May 2021 08:46 |
| Last Modified: | 28 May 2021 08:46 |
| URI: | http://repository.its.ac.id/id/eprint/60214 |
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