ANALYSIS OF QUALITY CONTROL OF AIRKU PRODUCTS USING SIX SIGMA METHOD AT PDAM TIRTA BINANGUN KULON PROGO REGENCY

Abstract

The purpose of this research is to investigate the causes of defective products and to propose improvements to reduce defective product in AirKUpackaging based on the six sigma method. This research used descriptive qualitative approach. The population in this study are AirKU products that were defective packaging before being handed over to consumers. The purposive sampling method was used by choosing AirKU products of 240 ml, 600 ml and 19 liter packaging from January to December 2018. Data analysis techniques using the six sigma method are define, measure, analyze, improve, and control (DMAIC ). The results showthat the causes of defective products are lid defects (77%), broken lid (8%), and cracked gallons (5%). The results of the calculation of AirKU's product sigma value is 3.89 with a defective product average of 2.6% of total production. Sigma level shows that the performance of production is quite good and above the average of Indonesian companies (2-sigma). The most dominant causes of defects product are machine, man, method, media, and raw materials. Proposed improvements include routine maintanance of machine, expansion of production sites, increasing employee motivation, and regular trainings for employees.

Keywords: quality, quality control, DMAIC, six sigma