The OCAP works by helping teams identify variables that have possible effects on the process, including consequences or trends. The OCAP’s purpose is to help teams identify and correct those root causes that are causing problems in their processes. The OCAP outlines the steps to follow to correct the data so the outputs are back within the acceptable range. Being outside of this control range, whether it’s too high or too low – means there is now an “out of control” situation that must be addressed quickly. They are not always needed – only when the data being measured in the Control phase falls outside of the range that was pre-determined to be acceptable. The out of control action plan is a type of contingency control chart. Overview: what is an out of control action plan? If the data falls outside of these limits we are out of control. In short, a control chart indicates whether or not we are operating within acceptable limits (control limits). One of the most widely used tools in this phase is the control chart: a simple and effective tool to monitor process performance over time as it relates to variability. Its purpose is twofold: to ensure action items from the previous phase are efficiently implemented and maintained, and to monitor any variants in the improved process that falls above or below the pre-determined control limits. The final phase of (Lean) Six Sigma’s DMAIC framework is Control.
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