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QMS Cause-& Effect Diagram; Turtle Diagram
Dɇnnis Fickingɇron 13 November 2012
Transcript of QMS Cause-& Effect Diagram; Turtle Diagram
- What is a Ishikawa Diagram?
- Pros & Cons
- Development (6 Steps)
- Conclusion 2.Turtle Diagram
- What is a Turtle Diagram?
- Pros & Cons
- Conclusion What is a Cause-and- Effect Diagram? - identify, sort and display possible causes of a problem
- relationship between a given outcome and the influenced factors
- Kaoru Ishikawa (~1940) = Cause & Effect Diagram When should we use a C&E Diagram ? - identify the possible root causes
- analyze existing problems Why should we use a C&E Diagram? - identifying and organizing the known
- good structure
- systematic way Benefits of using a C&E Diagram - helps determine root causes
- encourages group participation
- uses an orderly, easy-to-read format
- shows possible causes of variation
- increases process knowledge How do we develop a C&E Diagram ? Step 1
define the outcome/effect
positive = object
negative = problem Step 2- fill in the box and draw the arrow short description
of the outcome Step 3 -identify main categories poor gas
mileage Methods Machinery People Materials Step 4 -identify causes influencing the effect poor gas
mielage Methods Machinery People Materials drive too fast Step 5 - add detailed levels poor gas
mielage Methods Machinery People Materials drive too fast impatience always late Step 6 -analyze the diagram poor gas
mileage Methods Machinery People Materials drive too fast impatience always late major branches A series of "why questions" Q: Why does he drive too fast?
A: He is very impatience.
Q: Why is he impatience?
A: He is always too late. Disadvantages - unclear
- not chronology Conclusion - You can determine root causes and effect
- Structure and analyze the process Turtle Diagram What: Equipment & Material Who: Personnel & Competencies Inputs Process How: Documentation/ Method Criteria: Objectives & Target Outputs What: Equipment & Material Who: Personnel & Competencies Inputs Process How: Documentation/ Method Criteria: Objectives & Target Outputs machine, materials,
including special skills,
restrictions... process controls,
specific method... key data;
objects... actual process
information... output measure of effectiveness - display
other information effective execution & improvement of key processes Benefits of using a Turtle Diagram - summarize
- transparent Disadvantages - outdated
- suspect - 6-8 team members What: Equipment & Material Who: Personnel & Competencies Inputs Process How: Documentation/ Method Criteria: Objectives & Target Outputs Steel Conversion Steel rod CNC-Maschine Semi-skilled worker Milling 20 rods
per day Analysis - S.W.O.T.- analysis - Variance- analysis Conclusion It is a useful tool to visually the individual procedures for
a process. But there are better methods to illustrate a process today. Thank you End use wrong gear poor hearing radio too loud can not hear the engine carburetor
adjustment fuel mix
too rich under inflated tires no record of
the pressure difficult air straems poor maintenance no awareness poor driving habits poor training wrong octane gas improper lubrication wrong oil don't knwo
octane - optimize a process