Six Sigma in logistics

Here is an example of successfully using Six Sigma: “Reducing stopping lines time caused by logistical problems”. The key indicator which give the performance of the process is Y% - the percentage of stops caused by logistics errors reported to total available (Td). This indicator should be as small as possible and it is critical for customer satisfaction (delivery time) and for cost reduction in the same time.
In Define is identify and study the process and select the team that will work on the project. Specific tools of this phase can be: Map process and collecting the Voice of the Customer.
Data are collecting and measure downtime (Tm), then calculate the ratio % Y = Tm / Td * 100 and their variation in time and the parameters that would influence it, x-s (Measure phase).