The document discusses the differences between chronic and sporadic problems and the appropriate approaches to address each type. It defines chronic problems as existing for some time and requiring improvement projects to attain breakthroughs. Sporadic problems are deviations that require troubleshooting to restore normal performance. The document outlines the sequence for breakthrough analysis including diagnosis to find root causes and developing remedies. It also summarizes the key steps in troubleshooting sporadic problems and the link between root cause analysis and the management by fact approach.
10. Definitions - Continued Cause: “Something” that happened to produce a deviation of the actual from the expected or desired. Proved reason for existence of problem. Often “multiple causes”. Dominant or Root Cause: a major contributor to existence of problem which must be fixed before there is an adequate solution. Remedy: a change that can successfully eliminate or neutralize the cause of a problem.
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12. Diagnosis for Improvement Diagnostic Journey: 1. Study the symptoms surrounding the problem to serve as a basis for theorizing about causes. 2. Theorize the causes of these symptoms. 3. Collect data and do analysis to test the theories and determine the causes. When the problem can be switched on & off at will - the journey is over!
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17. Tool Example - Ask Why 5 Times Generate Theory: Follow with Remedy! Failures from Supplier A are 2X the industry average. There is excessive damage in transit. Packaging is insufficient. Packaging specifications are incomplete. Why? Why? Why? Why? Real Root Cause There are no technical specifications for packaging available. Why?
18. Tool Example - Cause & Effect Generate Theory: Follow with Test of Theories based on priorities Out of Date Not Manufacturable Part Problem Cutting oil Bar Stock Capability Scheduling cpk Tolerances Procedures Set-up Maintenance Cost Inaccurate Training Engineering Support Operator Errors Adjustments Materials Machinery Methods Manpower Wrong Material Over Sized Wrong Oil Packaging Print Inaccurate
19. Tool Example - Structure Tree Elbow Failures Problem Subproblems Theories Most Likely Root Causes Crimp makes inadequate contact Cross Thread Pin not fully seated Cable not fully seated Defective Elbow Operator Material Methods Tools & Equipment Guide Thread Lack of Verification for Alignment # of Revolutions not counted
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22. Tool Example - Histogram & Run Chart Test Theory: Follow with Remedy! Histograms: Run Charts:
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26. Diagnostic Journey Root Cause Analysis Begins with Collecting Data on Symptoms Ends with agreement on Cause(s)
29. Management by Fact (MBF) Remedies Root Cause Analysis Diagnosis Direction Setting Direction Deployment Management Process Policy Deployment & Management by Fact Policy Deployment Monitor Performance Gap Detected No Yes
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31. MBF Form Root Cause Analysis/Diagnosis Remedies PROBLEM STATEMENT/OBJECTIVES & PERFORMANCE TRENDS: (indicate a brief statement of fact here) Insert graph of performance over time here (e.g., Pareto Chart / Current State vs. Goal) Insert graph of more detailed information here (Supportive Info. as necessary - e.g., Costs associated with the problem statement)
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Editor's Notes
* Introduction. * Announcements. * Ask the Audience: How many of you want to make defects in your work? How many of you want to make your work perfect or defect free the first time? How many of you believe this is possible? Well - it is!!!!! And, hopefully you will all be believers after the session.