Desain tempat kerja akan sangat bergantung pada jenis pekerjaan dan alat atau fasilitas yang digunakan untuk menunjang pelaksanaan operasi kerja. Salah satu departemen dalam PT. TJ Forge Indonesia adalah departemen Forging, Seksi Heat Treatment. Pada departemen ini terdapat aktivitas pengecekan kekerasan (hardness) part. Jika dilihat dari desain tempat kerja, maka salah satu faktor yang dapat menentukan ketidak nyamanan pekerja adalah kurangnya alat bantu mekanis yang digunakan. Opertor (pekerja) sering merasakan kelelahan pada bagian punggung dan leher. Analisis ergonomi akan dilakukan untuk menentukan alat bantu mekanis. Dalam penelitian ini, metode yang digunakan untuk menganalisis sikap dan posisi kerja menggunakan metode Rapid Upper Limb Assessment (RULA). Metode RULA digunakan untuk mengestimasi terjadinya risiko gangguan otot skeletal. Hasil yang diperoleh dari penelitian ini adalah sikap kerja operator yang melakukan pengecekan hardness dengan posisi membungkuk setelah diinvestigasi dengan menggunakan RULA checksheet mendapatkan hasil final score +5 yang berarti investigate further and change soon (perlu diinvestigasi lebih lanjut dan segera lakukan perubahan). Rekomendasi yang diberikan adalah dengan menambahkan alat bantu (support) dengan menambah ketinggian meja kerja agar operator tidak lagi membungkuk. Sikap dan posisi kerja operator dihitung lagi dengan mengunakan RULA checksheet dan hasilnya adalah +2 (acceptable) atau dapat diterima. Kata Kunci: Ergonomi, Postur Kerja, RULA
<div><p class="TtuloAbstract">Abstract: Taguchi method is one of a design of experimental (DOE), by using statistical approach to optimize the process parameters and maintaining the minimum variability and also improve the quality of product. Based on data characterisation, Nominal is Best in Taguchi methods is suitable application in this study. Its describe the procedures and steps that occur in DOE to find an optimum quality parameter corresponding quality characterisation. Nominal is the best applied in milling process of pulp on the hydrapulper with pulp freeness 650 Canadian Standard Freeness (CSF). The result is shown by orthogonal array, Signal-to-Noise (S/N) Ratio and analysis of variances (ANOVA). Three factors cosidered in this study and namely the composition of pulp (waste paper), pulp consistency and milling time. The experiment will conducted after determination of each level and the appropriate orthogonal array was selected. After measuring of pulp freeness produced by the pulp milling on the hydrapulper, then Signal-to-Noise (S/N) Ratio is calculated. As the conclussion, the factors and levels of optimum freeness obtained, pulp composition in level 1 (100%), pulp consistency at level 2 (8%) and milling time factor in level 2 (45 minutes). The result of experimental verification was interpreted in the conclusion.</p></div><p class="Abstract"><strong>Keywords:</strong> Taguchi; DOE; pulp; hydrapulper; Nominal is the Best; ANOVA</p>
A product or technology is perceived easily in case it has a high level of usability. This means users have no difficulties or encounter problems while using. The purpose of this study is to conduct usability testing of vision sensor-based working time measurement technology. It is meant to determine the ability of the technology to conduct work time measurement functions with the same results as the conventional process using a stopwatch. The study involves an experimental method with two factors. Based on the results of the ANOVA Two-Way Analysis (within-subject design), the first and second levels in apparatus factor shows there is no difference in the average value of the cycle time between work measurements with and without the vision sensor technology (Fobtained(4,1) < Fcritical(5,12)). Therefore, the technology designed is capable of measuring the same work as manual measurement.
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