Help with Six Sigma DMAIC (Define - Measure - Analyze - Improve - Control)

GOOD MANUFACTURING PRACTICE (cGMP) SIX SIGMA
1

A client has asked for some consulting help from me, wants it in the form of a six sigma project. I drafted the following. Is it reasonable? Does anyone have any suggestions?

Thanks,

Rex Clingan

6 Sigma approach

Define:
Define problem/opportunity.

Measure:
Measure performance of system before improvements made.

Analyze:
Analyze data from existing operation. Develop appropriate models. Use models to interpret data from existing operation. Develop candidate hypotheses for cause of problem. Rank hypotheses and select most promising. Develop methods to test selected hypotheses.

Improve:
Develop alternative options for improving process. Determine costs for each. Rank and select most promising for implementation. Implement. Evaluate results.

Control:
Establish controls to maintain improvement. Monitor ongoing performance against targets set.

2

Your response seems as reasonable as as anything else I have seen regarding six sigma. Since it also fits the Deming PDCA approach I would fly with it.

3

Dear All,
I want to add some more regarding six sigma.
In Define Phase the following are to be defined

  • Problem statement
  • Part Number
  • Response (Measurable / Not measurable)
  • History of rejection (2 years)
  • Specification
  • Instrument Used
  • Is R&R study required
  • Suspected Sources of Variation

You can use the techniques like Process mapping, FEMA, Pareto, R&R studies.

In Measure and Analyze phase, use Design of Experiments [doe] tools.

  • Paired comparison
  • Process parameter search
  • Component Search
  • Modified component search
  • Multi vari analysis
  • Concentration chart
  • Variable search
  • Full factorial

In Improve Phase, use techniques like

  • B Vs C [Better Vs Current]
  • Analysis of Variance
  • Scatter Plot
  • Response Surface Methodology.
  • In Control phase, use techniques like
  • Variation analysis
  • Control Charts
  • Pre-Control Charts
  • Process Control analysis and Control Plan
  • Mistake Proofing

Hope this will give better idea on six sigma approach.

4

[quote=ssnmd]Dear All,
I want to add some more regarding six sigma.
In Define Phase the following are to be defined

  • Problem statement
  • Part Number
  • Response (Measurable / Not measurable)
  • History of rejection (2 years)
  • Specification
  • Instrument Used
  • Is R&R study required
  • Suspected Sources of Variation

You can use the techniques like Process mapping, FEMA, Pareto, R&R studies.

In Measure and Analyze phase, use Design of Experiments [doe] tools.

  • Paired comparison
  • Process parameter search
  • Component Search
  • Modified component search
  • Multi vari analysis
  • Concentration chart
  • Variable search
  • Full factorial

In Improve Phase, use techniques like

  • B Vs C [Better Vs Current]
  • Analysis of Variance
  • Scatter Plot
  • Response Surface Methodology.
  • In Control phase, use techniques like
  • Variation analysis
  • Control Charts
  • Pre-Control Charts
  • Process Control analysis and Control Plan
  • Mistake Proofing

Hope this will give better idea on six sigma approach.[/quote]
Dear ssmnd.
Your interpretation is very clear. I am working at QA department in a new company and I don’t know should start from where. does it uses DMAIC. Can you help me about Quality Control. Thanks a lot.

5

If it’s still relevant I have found this page that describes the DMAIC phases in a clear language:

http://www.learn6sigma.com/

It also describes some of the tools that can be used in the different phases (just click on the relevant phase):

http://www.learn6sigma.com/about-dmaic

I hope it can help you.