Repairment  Ergonomic Posture in terms of Maximum Force that is borne by the operators and Possible Risk that Occurs by Using 3D SSPP Software and REBA Methods (PT.XYZ Case Study) 

Johana Devi

Teknik Industri Universitas Kristen Maranatha

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PT.XYZ is an industry that engaged in the construction and steel fabrication located in Bandung. Researcher makes some observations on the production floor PT.XYZ bench vise. On the production floor it still seemed poor in posture such as bending and squatting, inadequate physical facilities, and the burden lifted exceeds the capacity of the operator’s body. If the state is carried out continuously and in the long term it can cause fatigue in working, but it also can lead to Musculoskeletal Disorders, which can degrade the performance of the operator.

This thesis aims to examine the condition of the current posture of the operator in terms of maximum force that is borne by the operator and the risks that may occur, to analyze the suitability of the existing physical facilities with operator anthropometry, as well as providing the physical facilities proposed design and improvement of work postures in order to support the operator’s performance better. Based on interviews with operators there are 11 activities to be studied include the activity of cutting lathes, scrap cutting, drilling (1), drill (2), assembly (1), assembly (2), assembly (3), material handling (1), material handling (2), material handling (3), and material handling (4). The data collected are the photos currently working postures, anthropometric data operators and measures of physical facilities at the production floor of a bench vise.

The data processed by using the 3D SSPP software and REBA method analyzes posture. The analyzed photos will be drawn the angle lines by using the software Image Analysis ergofellow, photos that have drawn the line angles will be taken into consideration in determining the joint angles in the input 3D SSPP software analysis and assessment methods REBA posture. Operator anthropometric data is used to analyze the suitability of the existing physical facilities with operator anthropometry. Based on processed data used the REBA, 8:33% have a high level of risk and very high, and 83.33% moderate and low risk. Out of the 11 activities surveyed 9 activities is clasified into poor working posture and need to be fixed, while the analysis of physical facilities resulting three physical facilities that have not ergonomic for repairment.

Therefore, the design of the proposed improvement of work postures and physical facilities are given in order to support the operator to be a better performance by using software Catia V5R19. There are  few suggestions for the design of physical facilities to support the posture of the operator of which are proposed wheel scrap machinery, hydra carts, and others. Based on the suggestions made, work postures obtained by the proposed improvements are re-evaluated using the 3D SSPP software and REBA posture analysis methods to prove that the proposed repair work postures for each activity are really good. With the proposed improvement of the working posture, 55.55% are produced a negligible level of risk and low risk level of 44.44% of the working posture, as well as the maximum force is borne by the operator even lower than before. Proposed work posture improvements are expected can improve the performance of the operator.


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