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Docki Saraswati
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Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering

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PERANCANGAN RUTE FORKLIFT TRUCKS UNTUK MEMINIMASI WAKTU PERJALANAN Nurlailah Badariah; Docki Saraswati; Astari Putri Dwityaningsih
JURNAL TEKNIK INDUSTRI Vol. 5 No. 3 (2015): Volume 5 No 3 Novemberi 2015
Publisher : Jurusan Teknik Industri, Fakultas Teknologi Indusri Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (161.75 KB) | DOI: 10.25105/jti.v5i3.1520

Abstract

The purpose of this study is to minimize the travel time of forklift trucks. Currently thetotal travel time for the nine locations that using forklift trucks is 41.39 minute, and the averagetime for activities in each site is constant 90.15 minutes. The main problem shown by the researchis that the travel time has not reached the optimal time. The result from random sampling methodis 38.17 minutes. The solution reached from Genetic Algorithm is 34.80 minutes as the route fromMaintenance Cutting Logistic Gas Metering Regulating Station Fabrication Transformer Tank Fabrication General Fabrication Stamping Products WarehouseMaterial Warehouse and back to Maintenance with 16% of decreased travel time from priorcondition optimized by Genetic Algorithm.
IMPLEMENTASI THEORY OF CONSTRAINTS PADA UPAYA PENINGKATAN KAPASITAS PRODUKSI OLAHAN BANDENG, DI KOTA BEKASI Docki Saraswati; Rosiyana Dewi; Sucipto Adisuwiryo
JURNAL TEKNIK INDUSTRI Vol. 6 No. 3 (2016): Volume 6 No 3 November 2016
Publisher : Jurusan Teknik Industri, Fakultas Teknologi Indusri Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.964 KB) | DOI: 10.25105/jti.v6i3.1545

Abstract

Competition in finding jobs increasingly tight, encourages efforts to establish its own selfemploymentby utilizing available resources. Research conducted on entrepreneur processedbandeng fish in Bekasi, which produces ‘otak-otak bandeng’. SWOT analysis approach conductedon aspects of production, finance and marketing to formulate strategic decision-making. Strategiesto increase production capacity were done by using the approach of theory of constraints (TOC).There are 10 stages in the process of making the ‘otak-otak bandeng’. The result shows theidentification of constraints occur in the process of separating the thorn of the fish. Replacement ofmeat grinder machine increases the efficiency of processing time by 13%. Furthermore, change ismade on the work procedures for cooling process and inserting fish in the plastic packaging bags.The replacement of meat grinder machine and changing the work procedures for packaging hassaving the processing time up to 20%.
PENENTUAN UKURAN LOT GABUNGAN DENGAN BARGAINING GAME DAN CONSIGNMENT UNTUK PEMANUFAKTUR DAN PEMBELI TUNGGAL Jalesviva Joy; Docki Saraswati; Rahmi Maulidya
JURNAL TEKNIK INDUSTRI Vol. 3 No. 2 (2013): Volume 3 No 2 Juli 2013
Publisher : Jurusan Teknik Industri, Fakultas Teknologi Indusri Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (107.254 KB) | DOI: 10.25105/jti.v3i2.1579

Abstract

This paper considers the integrated inventory model, where the ordering lot is no longerdetermined by the buyer, but it is determined by both parties in order to minimize the totalinventory cost. There are three approaches in determining the joint lot size: Joint Economic LotSize (JELS), Joint Economic Lot Size with Bargaining Game, and Joint Economic Lot Size withConsignment. On JELS with Bargaining Games, the manufacturer will offer rebates to thebuyer, since buyer will be at the disadvantage side if the manufacturer only offers JELS.Furthermore, on model JELS with Consignment, the manufacturer will own the product until itis used by the buyer. Using JELS, manufacturer makes a savings of 8.73% while the buyersuffered a loss of 3.37%. The result of using the JELS with Bargaining Game will give themanufacturer a savings of 6.63%, while the inventory cost for the buyer is the same with theinitial condition (individually). This paper concludes that using the JELS with consignment willprovide savings to the manufacturer as well as for the whole system.
Penentuan Ukuran Lot Gabungan Untuk Pembeli Tunggal Dan Pemasok Tunggal Mempergunakan Pendekatan Vendor Managed Inventory-Consignment (VMI-C) Docki Saraswati; Rahmi Maulidya; Mira Kurniasari
JURNAL TEKNIK INDUSTRI Vol. 1 No. 1 (2011): Volume 1 No 1 Maret 2011
Publisher : Jurusan Teknik Industri, Fakultas Teknologi Indusri Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (590.851 KB) | DOI: 10.25105/jti.v1i1.6992

Abstract

In fullfilmen the needs of raw materials partially, the buyer determines the amount of raw material ordered and the supplier send the appropriate amount of raw materials are ordered. These relationships often lead to a mismatch of needs raw materials by the number of available raw materials suppliers in the inventory purchases that result in higher costs of raw materials and the total cost of inventory. Therefore there is need for a policy that can control the system in an integrated supply of raw materials. The study begins with the determination of lot size by the buyer. Furthermore, the determination of lot size is determined by the supplier with approaches vendor-managed inventory (VMI). In this case the supplier to supervise the inventory status of the buyer, so buyers do not need to make the ordering process. At VMI with consignment approach (VMI-C) the buyer is not burdened with the cost savings, due to the transfer of ownership of raw materials occurs when raw materials used in the production floor. Based on calculations with observational data obtained on an approach that VMI and VMI-C total cost of inventory buyers and suppliers can deliver better results than not applying both approaches.
PERANCANGAN PENJADWALAN FLOWSHOP MENGGUNAKAN PARTICLE SWARM OPTIMIZATION UNTUK MEMINIMASI NUMBER OF TARDY JOBS Rahmi Maulidya; Docki Saraswati; Divani Vania
JURNAL TEKNIK INDUSTRI Vol. 2 No. 2 (2012): Volume 2 No 2 Juli 2012
Publisher : Jurusan Teknik Industri, Fakultas Teknologi Indusri Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (533.43 KB) | DOI: 10.25105/jti.v2i2.7029

Abstract

This paper propose an algorithm for general flowshop scheduling problems using Particle Swarm Optimization that can minimize number of tardy jobs. The algorithm is illustrated in a case study from the heavy equipment manufacturing industry. The proposed algorithm based on Particle Swarm Optimization algorithm developed by Tasgetiren using routing symbols, combined with the characteristic of its production. The jobs would be process in first work station using Particle Swarm Optimization approaches, for 2nd until 11th works stasion using first come first served rules and earliest due date rules for assembly’s works station.
Peningkatan Efisiensi Proses Produksi Obat MEF di PT. XYZ dengan Pendekatan Lean Manufacturing Ahsan Khalfani Sabara; Docki Saraswati; Iveline Anne Marie; Idriwal Mayusda; Emelia Sari
JURNAL TEKNIK INDUSTRI Vol. 13 No. 3 (2023): VOLUME 13 NO 3 NOVEMBER 2023
Publisher : Jurusan Teknik Industri, Fakultas Teknologi Indusri Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/jti.v13i3.19414

Abstract

Intisari-PT. XYZ adalah perusahaan farmasi yang menghasilkan produk obat generik. Permintaan produk obat MEF pada PT XYZ belum dapat terpenuhi dikarenakan proses produksi obat MEF yang belum optimal. Penelitian bertujuan melakukan evaluasi meminimasi waste yang terjadi, untuk dapat meningkatkan performansi proses produksi obat MEF. Upaya meminimasi waste menggunakan pendekatan lean manufacturing yang diawali dengan pemetaan current value stream mapping (C-VSM) terhadap kegiatan proses produksi obat MEF. Hasil pemetaan C-VSM menunjukkan 14 kegiatan tidak memberikan nilai tambah (non-value added) terhadap produk dengan 4 jenis pemborosan (waste) yaitu waste waiting, defect, transportation dan over processing. Nilai MLT (manufacturing lead time) dan PCE (process cycle efficiency) pada C-VSM adalah 324506 detik dan 39,13%. Perbaikan yang diusulkan pada waste waiting berupa pelatihan operator setiap bulan, penambahan rak untuk peletakan prosedur pengemasan induk (PPI), penyusunan jadwal dan pembuatan form inspeksi mesin stripping. Usulan perbaikan untuk meminimasi waste defect adalah perancangan alat bantu pembatas foil dan pembuatan form pembersihan sensor nozzle, sedangkan untuk eliminasi waste over processing dilakukan dengan menghilangkan aktivitas rekonsialisasi bon putih. Future VSM yang merupakan proyeksi VSM apabila usulan perbaikan dilakukan, dengan nilai MLT proyeksi sebesar 301716 detik dan PCE proyeksi sebesar 52,4%, didapatkan peningkatan efisiensi proses produksi sebesar 13,3% dan diproyeksikan adanya peningkatan output produksi, namun belum dapat memenuhi permintaan produksi pada periode puncak. Perusahaan disarankan untuk mengevaluasi kembali ketersediaan sumber daya produksi yang dimiliki dalam penentuan target produksi terkait pemenuhan permintaan kebutuhan obat MEF. Abstract— PT. XYZ is a pharmaceutical company that produces generic drug products. The demand for MEF medicinal products at PT. XYZ cannot be fulfilled because the MEF drug production process is not yet optimal. The research aims to evaluate minimizing the waste that occurs, in order to improve the performance of the MEF drug production process. Efforts to minimize waste use a lean manufacturing approach, which begins with mapping current value stream mapping (C-VSM) on MEF drug production process activities. The results of the C-VSM mapping show that 14 activities do not provide added value (non-value added) to products with 4 types of waste, namely waste waiting, defects, transportation and over processing. The MLT (manufacturing lead time) and PCE (process cycle efficiency) values on C-VSM are 324506 seconds and 39.13%. Proposed improvements for waste waiting include monthly operator training, adding shelves for placing main packaging procedure (PPI), preparing schedules and creating stripping machine inspection forms. The proposed improvement to minimize waste defects is to design a foil barrier tool and create a nozzle sensor cleaning form. Meanwhile, eliminating waste over processing is done by eliminating the white bill reconciliation activity. Future VSM is a VSM projection, if the proposed improvements are carried out, the MLT and PCE values are projected to reach 301716 seconds and 52.4%. There has been an increase in production process efficiency by 13.3% and a projected increase in production output, but it is still unable to meet production demand during peak periods. The recommendation for companies is to re-evaluate production targets according to resource availability in an effort to meet demand for MEF drugs.
Co-Authors A.A. Ketut Agung Cahyawan W Adi Sucipto, Adi Ahsan Khalfani Sabara Astar Putri Dwityaningsih Astari Putri Dwityaningsih Divani Vania Emelia Sari Idriwal Mayusda Iveline Anne Marie Jalesviva Joy Mira Kurniasari Nurlailah Badariah Rosiyana Dewi