MERRY SISKA DAN HENRIADITeknik Industri, Fakultas Sains dan Teknologi, UIN Sultan Syarif Kasim Riau, PekanbaruLaman: merrysiska@yahoo.comABSTRAKUD. Dhika Putra merupakan perusahaan yang bergerak dalam pembuatan tahu. Saat ini kondisi layout fasilitasproduksi dan kondisi fisik lingkungan kerja di perusahaan mengalami kendala. Penelitian ini bertujuan untuk merancangulang tata letak fasilitas pabrik pembuatan tahu yang dapat meminimalkan panjang lintasan material handling sertamenerapkan metode 5S untuk meningkatkan produktivitas kerja. Pendekatan yang digunakan pada perancangan ulangtata letak fasilitas pabrik adalah dengan menggunakan pendekatan Systematic Layout Planning (SLP) yang dapatdikategorikan ke dalam tiga tahapan, yaitu tahap analisis aliran material, tahap penelitian dan tahap proses seleksi.Sedangkan metode 5S terdiri dari beberapa tahapan untuk mengatur kondisi tempat kerja yang berdampak terhadapefektivitas kerja, efisiensi, produktivitas dan keselamatan kerja. Hasil penelitian ini menyimpulkan bahwa layout usulanyang terpilih untuk dijadikan layout akhir dalam penelitian ini menunjukkan penurunan panjang lintasan materialhandling yang cukup signifikan yaitu 45 m atau sekitar 19,2% lebih pendek dari layout awal. Berkurangnya panjang aliranmaterial handling layout yang terpilih juga dipengaruhi karena penataan lingkungan kerja dengan metode 5S.Kata kunci: material handling, tata letak fasilitas ����pabrik, systematic layout planning, metode 5SABSTRACTUD. Dhika Putra is a tahu manufacturing company. Currently, the company is having some problems in productionfacility layout and physical environment. This study aimed to redesign the facility layout of tahu manufacturing companyto minimize the path length of material handling and apply the 55 method to enhance work productivity. The approachused to redesign the plant facility layout is Systematic Layout Planning (SLP), which can be categorized in three stages,namely material flow analysis, research, and selection. While the 55 method consist of several steps to organize workplacecondition that affect on the effectiveness, eficiency, productivity, and safety. This study concluded that the chosen layoutfor the final layout showed a significant decrease in path length of material handling, i.e 45 meters or about 19,2%. Thedecreasing of material handling path length on the choosen layout was also influenced by the arrangement of the workplace by using 55 method.Key words: material handling, layout of plant facilities, Systematic layout planning, 5S Method
Working posture or work attitude is the working position is naturally formed by the body of workers due to the facilities used to interact with or work habits. Unsuitable working attitude can cause physical complaints such as pain in the muscles (Musculoskeletal Complain). Brick-making factories were encountered in the Village of Sail. This research is a field where once obtained the data needed and then do the processing of the data from the mapping process operations, risk evaluation work experienced by workers by using OCRA Checklist, calculate the value OCRA index, focus group discussions problems faced by workers, design repair work method proposed, calculates the data anthropometry workers, prototyping proposed workstation moulding bricks and evaluate the results of the optimization workstation moulding bricks. After all, factors rated the results of activities scored bricks have totalled a score of 23.19 for the body of the left and amounted to 25.13 to the right part of the body. This value is high because the number of ATA and RTA are very much different. If the number of recommended actions (RTA) is smaller than the number of actual action (ATA) then there is a risk assessment of musculoskeletal disorders.
The porous carbon electrode materials for supercapacitors derived from biomass waste attract lots of attention due to their natural abundance and low cost. This study therefore aims at developing a cost-effective and sustainable method for synthesising porous activated carbon derived from mission grass biomass waste (MG). The one-stage integrated pyrolysis for carbonisation, physical activation, and KOH activation was used to obtain porous activated carbon monolith. The surface morphology and pore structures consist of interconnected activated carbon nanofiber with high carbon content of 90.45%. The KOH impregnation successfully changed the morphology from the rod-like shape into a nanofiber structure. Due to their synergistic effect, the specific capacitance enhanced from 115 to 171 F g −1 in 1 M H 2 SO 4 aqueous electrolyte with an egg duck shell membrane as a separator. The result showed that the maximum energy and power densities were 23.75 Wh kg −1 and 96.94 W kg −1 , respectively. Therefore, these unique properties enable the mission grass to become a high potential for porous carbon electrode materials as supercapacitor energy storage.
Biomass-based activated carbon (AC) has been widely used as a supercapacitor electrode. Although there have been many studies that explain the potential of biomass as a material to produce AC as supercapacitor electrodes in performance through specific capacitance values and energy values, there have been no studies that discuss their potential from an economic point of view. Therefore, this study aims to use mission grass as a supercapacitor electrode to produce AC based on techno-economic aspects. There are several calculations, including the cost of production, break-even point (BEP), payback period (PP), net present value (NPV), and sensitivity analysis. Furthermore, it is necessary to include an estimate of cost component data to calculate the small-scale production target of 5,472 units/year. The results showed that cost of production of USD 1.83/unit with a selling price of USD 2.37, BEP at 3,538 units earned a gross profit, PP, and a positive NPV of USD 8,380, 5 years, and USD 8,768, respectively. According to sensitivity analysis, changes in selling price to BEP are considered the most sensitive. These implies that using mission grass as a supercapacitor electrode is beneficial. HIGHLIGHTS Development mission grass as a supercapacitor electrode is beneficial Produce activated carbon in small-scale production up to 5,472 units/year The payback period obtained in 5 years, NPV positive of USD 8,768 and earned gross profit of USD 8,380 Selling price of the supercapacitor biomass-based cheaper than other GRAPHICAL ABSTRACT
PT. Asia Forestama Raya Pekanbaru merupakan salah satu perusahaan yang memproduksi diantaranya Raw Plywood, Product Secondary Pocess (Polyester Plywood dan Film Face) dan kayu gergajian atau moulding. Penelitian ini dilakukan dengan menerapkan ke perusahaan langsung agar dapat melihat perbandingan dan dampak positif yang diperoleh perusahaan.Sumber data diperoleh berdasarkan observasi dan wawancara kepada kepala stasiun kerja dan para pekerja.Analisis lingkungan kerja dilakukan berdasarkan aspek 5S dan tentang keselamatan kerja berdasarkan metode HIRARC.Hasil penelitian menunjukkan bahwa kondisi lingkungan kerja pada perusahaan belum memenuhi kriteria 5S sehingga perlu dilakukan perbaikan. Penerapan keselamatan para pekerja belum maksimal sehingga perusahaan masih memiliki 46,15 % kegiatan dengan potensi bahaya ekstrim, 38,46 % kegiatan dengan potensi bahaya high (tinggi), 11,54 % kegiatan dengan potensi bahaya medium (sedang) dan 3,85% kegiatan dengan potensi bahaya low (rendah). Implementasi mengenai aspek 5S telah dilakukan namun dalam penggunaan alat keselematan kerja harus lebih ditingkatkan dan diprioritaskan kembali.
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