A Tollgate Review will help you determine if the goals in a DMAIC stage have been completed and whether you can move on to the next stage. A Six Sigma Measure Tollgate Review is like a checkpoint at which the various team members meet with a project Champion and determine whether the work has been performed as indicated in the project plan and whether the objectives mentioned have been achieved.

Six Sigma Measure Tollgate Review:

Has the Team Identified the Key Measures (Input’s and Y’s)? 

  • Has a detailed Process Flow Chart/Map been developed to show Quick Wins (redundancies, Lean Improvements)?
  • Has the “Input Map” been developed?
    • How much time was spent on the development of the Input Map?
    • Is the team confident that they have identified most of KPIV’s (Key Process Input Variables)? 
    • Are the KPOV’s (Key Process Output Variables) described in measureable terms?
  • What key measures identified indicate the performance of the business process (The Big Y’s and Little Y’s)? 
  • What are the agreed upon definitions (specifications) of the high impact characteristics (CTQs), defect(s), unit(s), and opportunities that will figure into the process capability metrics? 

Was the Measurement System and the Data Verified?

  • Has the team verified the stability and accuracy of the measurement process?
  • Was a gauge R&R conducted? If not, how was the Measurement System Verified?
Process Variation Displayed and Communicated 
  • Has the team used control charts to display and communicate baseline variation in the KPIV’s?
  • Is there “Out of Control” situations? If so, how are they being dealt with?
Performance Baseline
  • What is the current process performance baseline?
  • How large is the gap between current performance and the customer-specified (goal) performance?
Multi-Vari Data
  • Has the team determined the potential data that can be collected on the KPIV’s?
Define Stage Deliverables:
  • Flow of the Process Charted through a detailed Flow Map/Chart
  • Input Map developed to show KPIV’s
  • C&E Matrix developed to Pareto Input’s to “Critical Few”
  • Project “Y” tracked using Run Chart, Time Series Chart, or Individuals Chart 
  • Baseline variation in KPIV’s displayed 
  • Measurement System Verified through a Gauge R&R, Audit, or other method
  • Baseline Capability Determined through Capability Study, or other method
  • Low hanging fruit actions assigned to team
  • Red flags and recommendations for resolving them defined
  • Next steps documented
  • Approval of report out signed by Project Champion