Lean Wednesday Tip: Unstable Processes

“A process that is not under control or is unstable displays patterns of variation. Unstable processes have variation that is unpredictable; the magnitude of the variation could change from one time period to another.”

Lean Wednesday Tip: Variation in a process

“Sources of variation can be found in the process itself, the raw materials used, the operator’s (employee’s) actions or the environment. For example, software settings / updates, tool wear, humidity, heat, and over-adjusting a machine are all sources of variation.”