Ergonomic Assesment Postur Kerja Pada Material Handling di Mesin Mixer Tepung Melalui Konsep Karakuri di PT Dua Kelinci

Abstract

Musculoskeletal Disorders (MSDs) merupakan masalah umum di industri pengolahan makanan akibat aktivitas fisik berulang dan postur kerja yang tidak ergonomis. Penelitian ini dilakukan di Divisi Bijian PT Dua Kelinci untuk mengevaluasi postur kerja pekerja pada proses persiapan tepung menggunakan metode Rapid Entire Body Assessment (REBA). Data dikumpulkan melalui observasi langsung, dokumentasi postur kerja, serta analisis sudut tubuh menggunakan software Kinovea dan software Ergofellow. Hasil analisis menunjukkan bahwa postur kerja pekerja memiliki tingkat risiko tinggi hingga sangat tinggi dengan skor REBA mencapai 9–11. Untuk pekerja 1 mendapatkan skor REBA 9, pekerja 4 mendapat 10, dan pekerja 2 & 3 mendapat skor 11. Skor tertinggi tercatat pada kelompok lengan atas, batang tubuh, dan pergelangan tangan karena aktivitas membungkuk, menjangkau, dan mengangkat beban berulang. Sebagai solusi, dirancang alat bantu berupa trolley berkonsep karakuri untuk mengurangi beban fisik, meningkatkan ergonomi kerja, dan menurunkan risiko MSDs. Rancangan ini diharapkan dapat meningkatkan kenyamanan dan keselamatan kerja, mendukung efisiensi operasional, serta memberikan dampak positif terhadap produktivitas dan keberlanjutan proses kerja di perusahaan.

Musculoskeletal Disorders (MSDs) are prevalent issues in the food processing industry, primarily due to repetitive physical activities and non-ergonomic work postures. This study was conducted in the Grain Division of PT Dua Kelinci to assess the work postures of employees involved in flour preparation, utilizing the Rapid Entire Body Assessment (REBA) method. Data were gathered through direct observation, documentation of work postures, and body angle analysis using Kinovea and Ergofellow software. The analysis results indicated that the workers' postures exhibited a high to very high risk level, with REBA scores ranging from 9 to 11. Worker 1 received a REBA score of 9, Worker 4 scored 10, while Workers 2 and 3 both scored 11. The highest scores were noted in the upper arm, torso, and wrist regions due to activities involving bending, reaching, and repetitive lifting. To address these issues, a karakuri concept trolley was designed to alleviate physical strain, enhance work ergonomics, and reduce the risk of MSDs. This design aims to improve workplace comfort and safety, support operational efficiency, and positively impact productivity and the sustainability of work processes within the company.