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All Journal Jurnal Teknik Mesin, Industri, Elektro dan Informatika
Nabila Kurnia Ramadhani
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Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering

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Penerapan Konsep Lean Manufacturing Untuk Redesign Tata Letak Fasilitas Dengan Pendekatan Value Stream Mapping Pada UMKM Roti Agifa Ridwan Adi Setiabudi; Nabila Kurnia Ramadhani; Eko Apriyana; Fadila Woro Wulandari; Dista Amelia
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 4 No. 1 (2025): JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v4i1.4789

Abstract

Agifa Roti is one of the small and medium enterprises (SMEs) engaged in the food industry, located in Warungboto, Umbulharjo District, Yogyakarta City, Special Region of Yogyakarta. The products produced are in the form of basic ingredients for sweet bread, in the production process it is still traditional without using the help of machines only during the baking process using a gas-fueled oven and mixer to make dough. facing waste constraints in the sweet bread production process, especially in waiting activities (31.07%) and transportation (8.90%). This waste is caused by the less than optimal layout of facilities, with a distance of movement between work stations reaching 810.99 cm. This study aims to identify waste, reduce waste, and increase production efficiency through the application of the Lean Manufacturing method with the Value Stream Mapping (VSM) approach including the calculation of Material Handling Costs (OMH) to assess cost efficiency. Research methods related to cycle time, lead time, changeover time, and facility layout. Based on the research results, it shows that the application of the Lean Manufacturing method with the VSM approach is able to reduce the distance of movement between work stations by 29.2%, production cycle time by 61.2%, and material handling costs significantly, thereby increasing efficiency, reducing waste, and providing real benefits for the productivity and competitiveness of Roti Agifa MSMEs and similar MSMEs.
Analisis Pengendalian Persediaan Bahan Baku Menggunakan Metode Material Requirement Planning pada PT XYZ Nabila Kurnia Ramadhani
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 4 No. 1 (2025): JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v4i1.4807

Abstract

This research focuses on proper raw material inventory control and minimum cost control at PT XYZ. From observation data in 2023, it is known that there is an overstock of copper slag material of 50,160 tonnes, and there is a stockout of gypsum material of 44,403 tonnes and clay of 73,574 tonnes. This research aims to determine appropriate raw material inventory control to identify problems and provide alternative suggestions. The factor that causes stockouts and overstocks in storage is the non-optimal supply of raw materials, such as gypsum material, from February to April there was no material ordering activity. This research uses the Material Requirement Planning method with Lot For Lot and Fixed Order Quantity lotting techniques. Based on the results of the analysis, it was concluded that the gypsum and copper slag materials using the LFL lotting technique produced minimum costs compared to using the FOQ lotting technique, with a difference in the total cost of the gypsum material of IDR. 402,329,503.8 and the difference in the total cost of copper slag material is Rp. 779.1363.022.5. In contrast to clay materials, the FOQ lotting technique produces minimum costs compared to using the LFL lotting technique with a difference in total clay material costs of IDR. 384,902,040. The right solution for controlling raw material inventory at PT XYZ is to use the MRP data processing method and the Lot For Lot lotting technique with a large percentage of gypsum of 1.48%, and copper slag of 8.17%.
Co-Authors Dista Amelia Eko Apriyana Fadila Woro Wulandari Ridwan Adi Setiabudi