What is a control plan in Six Sigma?

A control plan in Six Sigma is fundamentally a document that outlines the necessary steps to maintain and sustain process improvements achieved during a project. Its primary purpose is to ensure that the enhancements made through various Six Sigma methodologies are not only implemented but also monitored over time.

By detailing specific metrics, procedures, and response actions, the control plan serves as a guideline for future operations, allowing teams to standardize practices and continue delivering outputs that meet the desired quality standards. This helps to prevent drift back to prior, less effective performance levels.

The control plan is instrumental in ensuring that any changes made are effectively integrated into everyday processes and that they are sustainable long-term. Its comprehensive nature includes monitoring techniques, assigned responsibilities, and regular review intervals, making it an essential tool for quality assurance in Six Sigma initiatives.

Options that focus on process failures, strategies for team meetings, or lists of project stakeholders do not capture the essence of what a control plan is designed to achieve within the Six Sigma framework, which is maintaining improvements and ensuring the continued success of process changes.