This study aims to analyze the product failure of the type of pin post insulator product, as well
as to find the main cause and to propose improvements at PT XYZ using the Six Sigma
method. This research was conducted only in parts of the production process that have a
high failure rate such as in natural dryingsections. This study uses a Six Sigma methodology
approach with tools such as Fishbone diagrams and Pareto diagrams. This research is a
quantitative descriptive exploratory method. The results of this study were the type of …

… Then, corrective actions were taken in the form of repairing the extruder and finishing
machines, training the operators, making new SOPs, making checksheets and checklists for
control. The conclusion of this research is that quality control using the six sigma method
can reduce the rejection level and increase the six sigma level. The suggestion is the need
for further research to be able to increase the … Figure 4: shows the control chart and
capabilities in the finishing, natural drying, oiling, combustion and routine test sections. …