Usulan Perancangan Fasilitas Kerja Ergonomis pada Bagian Injection untuk Meminimalkan Risiko MSDs di PT Natamas Plast

Abstract

Proses produksi di bagian injection PT Natamas Plast menunjukkan permasalahan ergonomi akibat fasilitas kerja yang tidak memadai, seperti kursi tanpa sandaran dan bantalan serta meja yang tidak sesuai dimensi tubuh operator, sehingga memicu keluhan musculoskeletal disorders (MSDs) pada area leher, punggung, pinggang, pantat, dan betis. Penelitian ini bertujuan merancang fasilitas kerja ergonomis pada bagian injection berdasarkan data antropometri dan kebutuhan pengguna untuk meminimalkan risiko MSDs. Metode Nordic Body Map (NBM) dan Rapid Entire Assessment (REBA) digunakan untuk mengidentifikasi keluhan dan menilai risiko postur kerja, sementara pendekatan antropometri diterapkan untuk menentukan dimensi optimal fasilitas kerja. Hasil penilaian NBM menunjukkan rata-rata skor 63 (risiko sedang) dengan tiga operator berada pada kategori risiko tinggi, dan enam operator berada pada kategori sedang, sehingga diperlukan perbaikan postur kerja. Berdasarkan data antropometri, dirancang meja dengan tinggi adjustable 136 – 159 cm dan kursi dengan tinggi adjustable 39 – 49 cm. Rancangan ini diharapkan mampu meningkatkan kenyamanan dan mengurangi risiko MSDs operator.

Production activities in the injection section of PT Natamas Plast revealed ergonomic issues due to inadequate work facilities, including chairs without backrests or cushioning and worktables incompatible with the operators body dimensions, leading to musculoskeletal disorders (MSDs) complaints in the neck, back, waist, thighs, and calves. This study aimed to design ergonomic work facilities in the injection section based on anthropometric data and user needs to minimize MSDs risk. The Nordic Body Map (NBM) and Rapid Entire Body Assessment (REBA) methods were employed to identify complaints and assess postural risks, while anthropometric measurements were applied to determine the optimal facility dimensions. The NBM assessment indicated a mean score of 63 (moderate risk), with three operators classified in the high-risk category and three in the moderate category, confirming the need for postural improvements. Based on anthropometric data, a worktable with an adjustable height of 136 – 159 cm and a chair with an adjustable height of 39 – 49 cm were designed. The proposed design is expected to enhance comfort and reduce MSDs risk among operators.