We are pleased to welcome back to my blog consultant and trainer David Roy from Six Sigma Professionals, Inc.
Oops! Didn’t see that coming! Part 3
As a continuation from the June blog, we are now covering the “Conceptualize” phase of the ICOV framework of a rigorous new design process as explained in “Services Design for Six Sigma – A Roadmap for Excellence”.
This phase is important because it conceives, evaluates and selects good design solutions through robust process methodology which ensures alignment to the customer and the business needs.
Many design solutions skip this phase and become typically named as “Launch and Learn”.
The Conceptualize phase consists of two stages and associated Tollgates to validate successful completion of the requirements.
The Concept Development stage involves translating Customer requirements into solution free Functional requirements, developing the System Level Conceptual Design, generating Concepts for required functions, Concept selection and translation of the Functional Requirements to Design Parameters.
An example of a Functional Requirement for a Customer Want of “Speedy Service” could be “Speed of Service” and a Design Parameter could be “Waiting Time”
Tollgate 3 Exit Criteria:
- Assessment that the Conceptual Development Plan & Cost will satisfy the customer base
- A Decision the design represents an economic opportunity (if appropriate)
- Verification adequate funding will be available to perform Preliminary Design
- Identification of the Tollgate Keeper & the appropriate staff
- An action plan to continue flow-down of the design Functional Requirements
The Preliminary Design stage involves creating the design documentation and configuration management, performing design analysis and testing, translating the Design Parameters into Process Variables and formulating the Production strategy.
An example of further mapping the Design Parameter of “Waiting Time” to a Process Variable could be “Number of Phone Lines”
Tollgate 4 Exit Criteria:
- Acceptance of the selected Solution/Design
- Agreement the Design is likely to satisfy all Design Requirements
- Agreement to proceed with the next stage of the selected Solution/Design
- An action plan to finish the flow-down of the design Functional Requirements to design parameters and process variables
Formal tools which can be used in this phase are QFD, TRIZ/Axiomatic design, Measurement System Analysis (MSA), Failure Mode effect Analysis (FMEA), Design scorecard, Process mapping, Process management, Pugh Concept Selection, Robust Design, Design Scorecards, Design for X and Design reviews.
The next and final blog will cover the Optimize and Validate phases.
David Roy is an integral part of the Six Sigma community. He taught GE’s Jack Welch and entire staff Six Sigma, as well as served as Senior Vice President of Textron Six Sigma. He is a Certified GE Master Black Belt, was instrumental in developing GE’s DMADV (DFSS) methodology, and has taught 3 waves of DFSS Black Belts. David holds a BS in Mechanical Engineering from The University of New Hampshire. He is also the co-author “Services Design for Six Sigma – A Roadmap for Excellence”