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7 Quality Control Tools (SQC Model) [MARCH 2009]
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7 Quality Control Tools (SQC Model) [MARCH 2009]

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The Introduction to 7-Quality Control Tools …

The Introduction to 7-Quality Control Tools
(SQC Model)

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  • 1. SEVEN QUALITY IMPORVEMENT TOOLS
    7
    QC
    ENGINEERING MANAGEMENT
    QUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    FAHAD MAHMUD MIRZA
    Sunday, May 09, 2010
    1
  • 2. PROLOGUE
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Quality Improvement falls in the major subject of Quality Control and Management…
    Quality Improvement:
    “Systematic approach to reduction or elimination of waste, work-back flow, rework, and losses in production process”
    //////////////////////////////////////////////////////////////
    Quality has to be caused, not controlled… -Phil Crosby
    7
    QC
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    Fahad Mahmud Mirza
  • 3. PROLOGUE
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Quality & Productivity Improvement
    While companies have adopted different methods to control design and manufacturing outcomes, the intent is always the same: quality improvement.
    Quality improvement efforts work best when problems are addressed systematically using a consistent and analytic approach; the methodology shouldn't change just because the problem changes. Keeping the steps to problem-solving simple allows workers to learn the process and how to use the tools effectively.
    //////////////////////////////////////////////////////////////
    Quality is never an accident, It is always the result of intelligent effort... -John Ruskin
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  • 4. PROLOGUE
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Quality Improvement Requirements
    • Organizational commitment
    • Communicating the commitment
    • Organizational culture
    //////////////////////////////////////////////////////////////
    Quality means
    doing it Right when no one is looking... -Henry Ford
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  • 5. PROLOGUE
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Quality Management
    Application of a system to manage a process consisting of structure, responsibilities, and procedures that achieves the quality desired
    Quality Plan
    A document that describes the standards, practices, resources and processes specific to producing quality
    //////////////////////////////////////////////////////////////
    Quality is not an act, It is a habit…
    -Aristotle
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  • 6. PROLOGUE
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Quality Assurance
    All the planned and systematic activities implemented within the quality system that can be demonstrated to provide confidence that a product or service will
    fulfill requirements for quality
    Quality Tool
    An instrument or technique to support or improve the activities of process management and improvement to meet the characteristics of quality
    //////////////////////////////////////////////////////////////
    Professionalism means
    consistency of Quality…-Frank Tyger
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  • 7. Improvement methods
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Quality Improvement Methods-
    ISO 9004:2000 Guidelines for performance improvement
    ISO 15504-4: 2005 Process assessment
    QFD — Quality Function Deployment
    Kaizen — change for the better; the continual improvement
    Six Sigma — 6σ, methods such as Statistical Process Control
    PDCA — Plan-Do-Check-Act cycle for quality control purposes
    Taguchi Methods — Quality loss function and Target specifications
    TQM — Total Quality Management
    TRIZ — Theory of Inventive Problem Solving
    BPR — Business Process Re-Engineering
    Quality Circle — People oriented group approach to improvement
    7QC— Also known as SQC (Seven Quality Control Tools)
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  • 8. Pdca - model
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
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    Easy to implement and follow up, the most commonly used and well-known quality process is the Plan-Do-Check-Act (PDCA) cycle
    P Plan: Define a problem or opportunity Analyze the situation and Develop a implementation Plan
    D Do:Implement corrective actions Document procedures and observations Using data-gathering tools to collect information
    C Check:Analyze information Monitor trends Compare obtained results with expected results
    A Act:Expected results: Do Nothing! Not-Expected results: Repeat PDCA cycle Document the process and revised plan
  • 9. PDCA - Model
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
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    Processand the Sub-Process
    //////////////////////////////////////////////////////////////
    Quality is free, but only to those
    who are willing to pay heavily for it…
    -Philip Crosby
  • 10. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    One of many methods to ease the quality improvement process was introduced by Kaoru Ishikawa
    It was called Seven Tools of Quality.
    Ishikawa believed that 95% of a company’s problems can be solved using these seven tools
    The tools are designed for simplicity so average person can have less complicated statistical analysis
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  • 11. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Seven Tools of Quality Improvement
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  • 12. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Flow Chart
    Flow charts describe sequence of activities graphically in accomplishing a task.
    It must reflect the actual process rather than what the process owner wants it to be.
    By generating flow charts, process owner can understand the process and working relationship between people and organization will be clarified.
    Furthermore, flow charts will show the duplicated effort and other non value added steps.
    So process owner can identify the target specific steps in order to make continuous improvement.
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  • 13. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Flow Chart
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    DOCK
    PAINT AND
    AESTHETICS
    RECIEVE
    INSPECTION
    FINAL TEST
    ASSEMBLY
    SHIPPING
    SUB-OPERATIONS
    7
    INSPECTION
    AND TESTING
    DOCK
    QC
  • 14. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Cause & Effect Diagrams
    Cause and effect diagrams are also called Ishikawa diagrams or fishbone diagrams.
    These diagrams show a relationship between the effect of the problem and the causes.
    Although cause and effect diagrams can be developed by individual, but it is better to be brainstormed by a team.
    To help in identifying the causes, people used to take 5 potential factors which are man, machine, material, method, and environment as the guidance.
    Cause and effect diagrams consist of 2 sides. The right side lists the effect or the problem, while the left side lists the causes of the problem.
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  • 15. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Cause & Effect Diagram
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    MATERIALS
    PEOPLE
    METHODS
    RESULT
    MACHINES
    DESIGNS
    MEASUREMENTS
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  • 16. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Check Sheets
    Check sheets are the paper forms for collecting data in real time easily and concisely.
    According to the data on check sheets, frequency or pattern of the events, problems, defects, etc. can be observed.
    These data are then used as input data for other seven quality tools such as histograms and Pareto diagrams.
    Furthermore, collected data on check sheets can be used as input to understand the real situation, analyze occurring problem, control the process, make the decision, and develop planning.
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  • 17. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Check Sheets
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  • 18. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Histogram Charts
    Histograms are bar graphs that present the frequency distribution of data.
    The horizontal axis represents the class interval of data while the vertical axis represents the frequency of each class interval.
    Not only for displaying data, histogram can also be used as a tool for summarizing and analyzing data.
    The particular values of histogram are:
    • Summary graph of frequency distribution
    • Shows data in various ranges
    • Conveys symmetry
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  • 19. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Histogram Charts
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  • 20. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Scatter Diagrams
    Scatter diagrams describe the correlation between 2 variables, so it can be identified whether those 2 variables are related.
    After developing cause and affect diagrams, sometimes people use scatter diagrams to determine objectively whether the cause and the effect are related.
    By looking at a glance to the scatter diagrams, process owner can analyze the positive/negative correlation of 2 variables. When the trend line goes from the bottom left to the up right, it means those 2 variables have positive correlation. Otherwise, if the trend line goes from the up left to the bottom right, and then it means those 2 variables have negative correlation.
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  • 21. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Scatter Diagrams
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  • 22. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Control Charts
    Control charts were invented by Walter A. Shewhart in 1920s.
    The maximum limit often called upper control limit and the minimum limit often called lower control limit, while the central line represents an estimate of the process mean.
    If the value is within control area, the process can be stated as a controllable process.
    The value outside control area indicates that the process is no longer stable because of some variation causes. Thus, this process needs proper corrective actions to eliminate the sources of variation.
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  • 23. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Control Charts
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  • 24. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Pareto Charts
    Pareto diagrams consist of bar graph and line graph that describe the proportion of each problem cause toward the overall cause.
    According to these quality tools, the major factor of the problem can be identified. Thus, it helps process owner in prioritizing the problem to be solved first.
    As Dr. J. M. Juran said, 80% of the problems are caused by 20% of the potential sources.
    Not only to identify the major problem, pareto diagram can also be used to analyze the improvement after solving some problems.
    Process owner can evaluate the process before and after solving the problems.
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  • 25. 7 basic tools of quality
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Pareto Charts
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  • 26. conclusion
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Benefits
    Many people in the industries are undoubtedly familiar with many of these tools and know their application, advantages, and limitations.
    However, this must ensured that these tools are in place and being used to their full advantage as part of their quality system procedures.
    Flowcharts and check sheets are most valuable in identifying problems, whereas cause and effect diagrams, histograms, scatter diagrams, and control charts are used for problem analysis. Pareto diagrams are effective for both areas.
    By properly using these tools, the problem-solving process can be more efficient and more effective.
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  • 27. Thank you
    ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
    Persistence is the twin sister of excellence.
    One is a matter of quality; the other, a matter of time…
    Even though if quality cannot be defined,
    you know what quality is
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