Page 203 - Six Sigma Demystified
P. 203

Chapter 8  co n t r o l   S tag e        183


                           can be translated into other processes, even those which seem quite different.
                           White papers, case studies, project reports, and chat rooms are useful for spread-
                           ing the word and institutionalizing the findings.


                             PROjeCT examPle: lessons learned

                             Lessons learned for this project included:

                                 •  add requirement to new product/service introduction procedures to up-
                                   date order fulfillment database with product details.
                                 •  The team also identified a few potential improvement opportunities that
                                   were outside the scope of their project.
                                 •  add links to support renewal e-mails to encourage use of Web-order form.
                                 •  add ability to accept purchase orders to Web-order form.

                             These were documented in the company’s improvement opportunity database.



                    Recommended Tools


                           The following tools (discussed in detail in Part 3) are applicable to the control
                           stage of DMAIC:

                             •  Flowcharts and process maps help to define the process-level activities nec-
                                essary.
                             •  Statistical process control (SPC) charts, including C, Np, P, U, Individual-X,
                                X-bar, and EWMA charts, and the process capability index help to verify

                                the effects of the improvement.
                             •  Goodness-of-fit tests help to verify the statistical distributions assumed in
                                the various statistical tools.
                             •  R&R studies help to qualify operators’ proficiency on specific measure-
                                ment equipment.

                           In addition, the consensus-building tools noted at the end of Chapter 4 are also
                           applied as needed.
   198   199   200   201   202   203   204   205   206   207   208