Abstract

In this 4.0 industrial era, some material handlings are still conducted manually by human. One example is in the warehouse area of CV Cita Nasional, a milk processing factory in Kopeng, Central Java. Workers are repetitively unloading a 25 kg sack of sweet whey powder from truck to warehouse area. Therefore, this study was carried out to investigate the musculoskeletal disorders risks on that workers manual handling activity. The OVAKO Working Posture Analysis System (OWAS) was chosen to be applied in the evaluation steps. For each activity in the unloading process, OWAS score category of 3 (improvements are necessary as soon as possible) were resulted on lifting, 2 (improvements are necessary in the long-term future) on carrying, and 3 on lowering the load. Consequently, a trolley was then designed to minimize the risks. The trolley was designed based on Indonesian anthropometry dimensions. Applying this proposed tool, lifting and lowering activities were then categorized in OWAS score of 2, whilst carrying was resulted in OWAS score of 1 (improvements are not necessary). This applied study was valuable in order to minimize the musculoskeletal disorders risks on such manual material handling activity, not only in the current workplace, but also in similar situation of industries.

Highlights

  • CV Cita Nasional is one of the milk processing factory, located in Kopeng, Salatiga, West Java, Indonesia

  • A trolley was designed in Indonesian anthropometry dimensions to help minimize the risks

  • The lifting, carrying, and lowering activities with the proposed tool could be conducted in lower OVAKO Working Posture Analysis System (OWAS) score, interpreted as lower musculoskeletal risks

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Summary

Introduction

CV Cita Nasional is one of the milk processing factory, located in Kopeng, Salatiga, West Java, Indonesia. One of the main ingredients in the milk processing is the sweet whey powder. This ingredient made of secondary product of processed cheese, which involved enzyme as the coagulation method to absorb water, generate emulsification, and result foams. We configured that the workers’ activity in storage handling were mostly conducted manually, which theoretically will develop high risks of musculoskeletal disorders (MSDs). Such prolonged situation, if not well controlled, will lead into injury and accident at work

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