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

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

    • SEVEN QUALITY IMPORVEMENT TOOLS
      7
      QC
      ENGINEERING MANAGEMENT
      QUALITY IMPROVEMENT IN TECHNICAL CONCERNS
      FAHAD MAHMUD MIRZA
      Sunday, May 09, 2010
      1
    • 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
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      QC
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    • 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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    • 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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    • 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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    • 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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    • 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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    • 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
    • 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
    • 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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    • 7 basic tools of quality
      ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
      Seven Tools of Quality Improvement
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    • 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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    • 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
    • 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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    • 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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    • 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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    • 7 basic tools of quality
      ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
      Check Sheets
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    • 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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    • 7 basic tools of quality
      ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
      Histogram Charts
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    • 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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    • 7 basic tools of quality
      ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
      Scatter Diagrams
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    • 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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    • 7 basic tools of quality
      ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
      Control Charts
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    • 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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    • 7 basic tools of quality
      ENGINEERING MANAGEMENTQUALITY IMPROVEMENT IN TECHNICAL CONCERNS
      Pareto Charts
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    • 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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    • 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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