ANALISIS PENGENDALIAN KUALITAS DENGAN MENGGUNAKANMETODE SIX SIGMA(Studi Kasus: Perusahaan Minibus)
2021
Quality is the key to success for an industry to be able to compete and dominate
the market. PT. XYZ is a manufacturing companny in carroserie that produces
bus, minibus and box. After conducting observations and interviews with the
company that there are still many defective products found in the process of
painting minibus. One method that can overcome product defects is Six Sigma. In
this research, the Six Sigma with Define, Maesure, Analyze and Improve. The
result show company’s defect rate for process of painting minibus is 208,382
DPMO or the company sigma value level of 2.31 sigma. In this study also used
Failure Mode and Effect Analysis (FMEA) which is used to determine the value of
Risk Priority Number (RPN) on each potential cause of failure. After observations
and interviews were obtained 35 potential causes of failure in the process of
painting minibus. The potential cause of failure with the highest RPN value is that
the spray booth filter has not been replaced with an RPN value of 170.43 which
causes a type of “cat bintik” defect. So the proposed improvements that can be
suggested from the results of the research to reduce the number of defects in the
minibus painting process is to provide training to operators how to mask the
correct way and increase supervision during the production process, provide
adequate ventilation so that the operator can concentrate properly, perform
periodic replacement of spray booth filters and operators ensure the feasibility of
spray booths before starting the painting process, provide and ensure the wipes
used in a clean state.
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