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All Journal UG Journal Jurnal Konversi Energi dan Manufaktur Jurnal Ilmiah Teknik (JUIT)
Rohmatin, Yuyun Yuniar
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Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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TATA LETAK PROSES PRODUKSI PRODUK LABEL COUNTAINER STICKER GM5Z (IB) STROM PADA PT SHISHOKU INTI KREASI Rohmatin, Yuyun Yuniar; Frediansyah, Syarian
UG Journal Vol 14, No 4 (2020)
Publisher : Universitas Gunadarma

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Abstract

Tata letak fasilitas merupakan suatu landasan utama dalam dunia industri. Tujuan yang ingin dicapai dalam penelitian ini adalah mengetahui proses produksi dan mengetahui tata letak proses produksi produk label Countainer Sticker GM5Z (IB) Strom di PT Shishoku Inti Kreasi. Proses produksi produk label Countainer Sticker GM5Z (IB) Strom di PT. Shishoku Inti Kreasi dimulai dari pengambilan bahan baku, proses printing dan laminating hingga proses set up mesin. Proses set up dilakukan sebelum proses printing dan laminating. Waktu rata-rata yang dibutuhkan adalah 30 menit. Waktu set up dapat berkurang tergantung jumlah unit warna, dan ukuran cetak untuk produknya. Proses checking atau pemeriksaan dilakukan untuk memastikan produk dalam sesuai dengan standar, dan tidak mengalami kecacatan. Tahap selanjutnya ke proses packing untuk dikemas, kemudian dibawa ke area finish good untuk disimpan sebagai stock. Tata letak fasilitas PT Shishoku Inti Kreasi memiliki 3 lantai. Lantai 1 terdapat area produksi, area warehouse, parkir, lobby, tempat pembuangan limbah produksi, musholla, toilet, dan fasilitas penunjang lainnya. Lantai 2 terdapat Ruang direktur dan komisaris, ruang staff, ruang rapat, area rolling, area finishing, area packing, area finish good, area NG (Not Good), taman, dapur, dan toilet. Lantai 3 terdapat meja staff warehouse, rak stock finish good, area finish good (tumpukkan), area finish good stock produk lama, area gudang kardus dan core, mesin sablon, mesin potong roll atau core, dan ruang mess.
IDENTIFIKASI KEBUTUHAN CHASSIS PRODUKSI BUS BERDASARKAN CUSTOMER ORDER SFESIFICATION Rohmatin, Yuyun Yuniar
UG Journal Vol 15, No 11 (2021)
Publisher : Universitas Gunadarma

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Abstract

Proses produksi yang dilakukan oleh perusahaan manufacture melibatkan supplier dalam kegiatan produksinya untuk memperlancar pengiriman pesanan sesuai dengan costomer order specification dan untuk meminimasi waktu penyelesaian produksi. Penelitian ini menggunakan metode deskriptif untuk memaparkan hasil penelitian. Tujuan yang menjadi focus dan ingin dicapai dalam penelitian ini adalah mengetahui supplier dan model bus sesuai dengan kebutuhan chassis untuk menutupi kebutuhan produksi bus dan waktu yang dibutuhkan perusahaan untuk memenuhi order specification customer. Berdasarkan hasil penelitian diketahui bahwa Terdapat beberapa jenis chassis yang digunakan dalam pembuatan bus dengan beberapa model misalnya jenis chassis DIESEL FE 84 digunakan pada model bus Legacy Sr 2 Xhd Dg-R Luxury Ls03.02 yang didatangkan dari supplier Mitsubishi. Bagian yang terpasang pada chassis diantaranya adalah Transmisi, Mesin, Suspensi, Roda dan Rem setelah mengalami beberapa tahapan proses produksi cahssis akan dihasilkan bus sesuai model yang diproduksi. Pemesanan Chassis berdasarkan Model Bus dilakukan oleh devisi Production planning and inventory control (PPIC) yang selanjutnya akan dikirimkan ke supplier. Pengiriman chassis oleh supplier didasarkan atas costomer order specification dari class A sampai dengan class D dengan waktu pengembangan produk (development) yang sudah ditetapkan paling lama adalah untuk pembuatan prototype produk adalah selama 31 hari kerja
Production Planning of Cassava Chips in Small Home Business Rohmatin, Yuyun Yuniar; Wahyuni, Rossi Septy; Raharja, Mei; Fauzia, Siva
Jurnal Konversi Energi dan Manufaktur Vol. 10 No. 1 (2025)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.10.1.3

Abstract

The production process of cassava chips begins with the preparation of cassava raw materials and then the process of separating the skin from cassava. The process of cutting cassava into a certain size uses a special machine that is operated manually. The process of frying cassava using a large pan and the process of packaging into plastic are the last step of production. Planning the production of cassava chips starts with preparing the needs of raw materials for production for 3 days in a week ordered from 3 different suppliers to prepare production needs, the quantity needed in purchasing from suppliers includes 120 kg of cassava, 9 kg of red chili, 1 kg of garlic, 3 kg of lime, 27 kg of cooking oil, 9 kg of sugar and 0.25 kg of salt. The initial supply of cassava raw materials provided is 120 kg and at the end of the week the production inventory needs are 80 kg left from the use of 40 kg at the end of the week for the next production.
ANALISIS INDIKASI RESIKO POSTUR PENGGUNA DESAIN MEJA BELAJAR PORTABEL : Analysis of User Risk Posture Indication for Portable Study Desk Rohmatin, Yuyun Yuniar; Wahyuni, Rossi Septy; Raharja , Mei
Jurnal Konversi Energi dan Manufaktur Vol. 9 No. 1 (2024)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JKEM.9.1.1

Abstract

Study portable desks can help people easily move from one another place. Using a study portable desk would make users fix the position once a few moments so that they risk experiencing bodily discomfort. Analysis indications of posture risk can be done by selecting launch rapid upper limb assessment (RULA) analysis from the ergonomic tools toolbar in CATIA software. This research aims to identify movements that occur when using a portable study desk and to analyze user posture risks that can be experienced when using a portable study desk. Based on the research results, it is known that the body posture of portable study desk users for group A on the upper arms is in the range of 20-45°, and the lower arms are in the range of 60-100°. The wrist enters the neutral position range. The rotation of the wrist can be seen that the hand is pointing inward. It has a degree of freedom of 90° with a maximum flexion angle of 160° and a minimum extension angle of 0°. Group B body posture for the stem body has a degree of freedom of 0°. The legs experience a slight downward movement with a degree of freedom of 6.061° and a maximum flexion angle of 135°. Posture analysis results for body parts. Details of the upper arm, forearm, wrist, and wrist twist have a score of 1, which means no posture needs to be corrected and the posture is acceptable. Details of body parts, namely neck, trunk, and legs, are indicated in green, which means no posture needs to be corrected and the posture is acceptable. The score results for body parts with the static posture option get an assessment score of 2 with a green color indication, so it can be concluded that the risk indication for this posture is acceptable.
Optimization of Warehouse Inventory Policy Using ABC–XYZ Analysis and the (Q,R) Model to Reduce Total Inventory Cost and Stockouts Rohmatin, Yuyun Yuniar; Dwinanto, Bambang
Jurnal Ilmiah Teknik Vol. 5 No. 1 (2026): Januari: Jurnal Ilmiah Teknik
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/juit.v5i1.1236

Abstract

Warehouses are pivotal nodes in supply chains, yet many distribution centers still apply uniform replenishment rules that ignore differences in item value and demand uncertainty. This practice often leads to simultaneous overstock (high holding cost) and stockouts (service failure), reducing overall operational efficiency. Objective: This study aims to optimize finished-goods inventory control in the distribution warehouse of Manufacturing Company X by integrating ABC–XYZ classification with class-based replenishment policies to improve the cost–service trade-off and service reliability. Methodology: The research uses a quantitative applied case-study design. Data were collected from secondary operational records (SKU demand history, lead time, inventory transactions, and cost parameters) and supported by primary inputs through observation and interviews to confirm replenishment constraints and routines. Analysis was conducted by (1) classifying items using ABC (annual usage value) and XYZ (demand variability), (2) translating classes into differentiated service targets and continuous-review policy parameters (order quantity, reorder point, and safety stock), and (3) evaluating performance using a before–after KPI comparison between the baseline and proposed policies. Findings: The results show strong value concentration and heterogeneous demand variability across SKUs, supporting differentiated control. The proposed policy reduces total inventory cost from IDR 8.75 billion to IDR 8.10 billion (−7.4%), decreases stockout incidents from 96 to 52 (−45.8%), and increases service level from 92.4% to 96.1% (+4.0 percentage points). Improvements are most pronounced in high-priority and high-uncertainty groups. Implications: The findings suggest that managers can improve warehouse service reliability while lowering costs by allocating buffers and control intensity according to item priority and uncertainty, supported by periodic class refresh, master-data governance, and inventory record-accuracy improvement (e.g., class-based cycle counting). Originality: This study contributes an end-to-end, implementable pipeline from ABC–XYZ segmentation to differentiated service targets, policy parameterization under practical constraints (e.g., MOQ/pack sizes), and KPI-based validation demonstrating measurable operational benefits beyond classification-only approaches.
Co-Authors Dwinanto, Bambang Fauzia, Siva Frediansyah, Syarian Raharja , Mei Raharja, Mei Rossi Septy Wahyuni