Lean Manufacturing Approach to Improve Speaker Manufacturing Process

Nastiti Puji Lestari, Putu Dana Karningsih

Abstract


PT Y is a subsidiary of Y Group which specializes in producing speakers for local and international markets. At present PT Y's orders have not met the expected performance targets. Fulfillment of production orders reached 97.55% of the target of 100%. This is one of the concerns of Y Group that PT Y need to improve themselves because it can result in companies becoming less competitive than competitors. Based on preliminary observations, there was indications of waste, namely defects, downtime, and process delays. The lean tool used for further waste analysis is Lean Assessment Matrix (LAM). The results of the research show that the waste which gives the most significant influences are transportation, waiting and inventory. The root causes of problems between work stations are not ergonomic, do not have preventative maintenance schedules, there are no standards for handling defective products, the layout of the room is not in the direction of material, the carrying capacity of hand trucks is small, and the Outgoing Quantity Check (OQC) processes are not included in the company’s time standards. The proposed improvement recommendations include conducting training to improve product repair skills, relayout of production plant, and making a preventative machine maintenance schedule.

Keywords


Lean Assessment Matrix; Lean Manufacturing; Process Activity Mapping; Value Stream Mapping; Waste Elimination

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References


S. Nakajima, TPM Development Program : Implementing Total Productive Maintenance, 1st Editio. Portland Or.: Productivity Press, 1989.

J. P. Womack and D. T. Jones, “Lean Thinking: Banish Waste and Create Wealth in Your Corporation,” J. Oper. Res. Soc., vol. 62, no. 1, pp. 1–2, 1997, doi: 10.1057/jors.2010.172.

J. F. Cox, J. H. Blackstone, and APICS--The Educational Society for Resource Management., APICS Dictionary, 9th ed. Athens: APICS, 1998.

P. D. Karningsih, A. T. Pangesti, and M. Suef, “Lean Assessment Matrix: A Proposed Supporting Tool for Lean Manufacturing Implementation,” IOP Conf. Ser. Mater. Sci. Eng., vol. 598, no. 1, 2019, doi: 10.1088/1757-899X/598/1/012082.

M. A. Nash and S. R. Poling, Mapping The Total Value Stream : A Comprehensive Guide for Production and Transactional Processes. New York: CRC Press, 2008.

R. A. Saputra and M. L. Singgih, “Perbaikan Proses Produksi Blender Menggunakan Pendekatan Lean Manufacturing Di Pt. Pmt,” Pros. Semin. Nas. Manaj. Teknol. XV, pp. 1–9, 2012.

R. J. and K. C. Latino, Root cause analysis : improving performance for bottom-line results, 2nd Editio. Boca Raton, Florida: CRC Press, 2002.

I. A. Rawabdeh, “A Model for The Assessment of Waste in Job Shop Environments,” Int. J. Oper. Prod. Manag., vol. 25, no. 8, pp. 800–822, 2005, doi: 10.1108/01443570510608619.




DOI: http://dx.doi.org/10.12962/j23546026.y2020i1.11940

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