Seven Steps or Seven QC Steps The 7 QC Steps process is a structured problem solving approach for improving weak processes. This approach is known as reactive improvement. The 7 QC Steps is easy to understand and learn, easy to use, and easy to monitor. The 7 QC steps process is structured as follows: Step 1: Select a Theme. In this step, the weakness in the process or the problem to be solved is clarified in a theme statement. A Flowchart, a Theme Selection Matrix, or a Cause & Effect Diagram is used as a tool in this step. Step 2: Collect and Analyze Data. This step focuses facts about the problem and discovers what types of problems occur frequently. When collecting data, you must think of all possible causes. Checksheets and Pareto Diagrams are the tools most often used. Step 3: Analyze Causes.With sufficient data from step 2, the root cause, or fundamental cause, is found by constructing a Cause & Effect Diagram. Step 4: Plan and Implement Solution. In this step, you brainstorm for ideas that are causing the problem and develop a solution that prevents the root cause from recurring. Then, you implement an adjustment to the process. The 4Ws and 1H Matrix (What, When, Where, Who, and How Matrix) is used to develop a plan. Step 5: Evaluate Effects.You evaluate the effects of implemented solution to make sure the solution worked and does not have unacceptable results from the comparison of data, before and after the implementation of the solution. In this step, comparative Pareto Charts and Graphs are frequently used to identify the results. Step 6: Standardize Solution. A standardized solution is confirms that the old process is replaced with an improved process and indicates that the solution is workable. A flowchart is most often used. Step 7: Reflect on Process and the Next Problem. In this step, you consider what the teams accomplishment was in the first 6 steps and recommend a weakness to work on next. Back to Original Page 7QC Tools Seven QC tools are fundamental instruments to improve the quality of the product. They are used to analyze the production process, identify the major problems, control fluctuations of product quality, and provide solutions to avoid future defects. Statistical literacy is necessary to effectively use the seven QC tools. These tools use statistical techniques and knowledge to accumulate data and analyze them. Seven QC tools are utilized to organize the collected data in a way that is easy to understand and analyze. Moreover, from using the seven QC tools, any specific problems in a process are identified. 7QC tools always include : Check Sheet is used to easily collect data. Decision-making and actions are taken from the data. Pareto Chart is used to define problems, to set their priority, to illustrate the problems detected, and determine their frequency in the process. Cause-and-Effect Diagram (Fishbone Diagram) is used to figure out any possible causes of a problem. After the major causes are known, we can solve the problem accurately. Histogram shows a bar chart of accumulated data and provides the easiest way to evaluate the distribution of data. Scatter Diagram is a graphical tool that plots many data points and shows a pattern of correlation between two variables. Flow Chart shows the process step by step and can sometimes identify an unnecessary procedure. Control Chart provides control limits which are generally three standard deviations above and below average, whether or not our process is in control.Quality Quality means a totality of characteristics of an entity that bear on its ability to satisfy stated and implied needs. In some references, Quality is referred to as fitness for use, fitness for purpose, customer satisfaction, or conformance to the requirements. To achieve satisfactory quality we must concern all stages of the product or service cycle. In the first stage quality is due to a definition of needs. In the second stage it is due to product design and conformance. In the last stage quality is due to product support throughout its lifetime. There are two major aspects of quality: quality of design and quality of conformance. Quality of design involves the variations of a product or services in grades or levels of quality. This includes the types of materials used in construction, tolerance in manufacturing, reliability, etc. Quality of conformance concerns how well the product conforms to the specifications and tolerances required by the design. Quality of conformance is influenced by the choices of manufacturing processes, training and supervision of the workforce, the type of quality-assurance system used, and the motivation of the workforce to achieve quality.
Posted on: Tue, 27 Jan 2015 04:53:18 +0000
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