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Statistical Process Control - Essay Example

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There are many factors that affect the scenario like mental focus, body strength, direction of air, kick intensity, shoe structure and level of tiredness etc. Despite these factors the players are selected in teams for their marksmanship. The question that arises here is that if a player cannot exhibit exactly same performance again and again then what the criterion of a player selection is? The answer to this question is very simple. Players are selected on the basis of level of control and their consistency to exhibit that ranged control over and over again. For example if a bull’s eye miss rate of a shooter remains in certain acceptable limits then he would be considered in control of his expertise. Evans J. R. (1991) in his book, indicates that a production process generally comprise of the entities namely People, Materials, Machines, Measurements and Methods. It is observed that these factors are the main causes of variations in a production process. The causes of variations are observed to be of two types. Common causes: That can be reduced by introducing changes in the process but cannot be eliminated completely. For example using a better version of sail may improve the output of yachting endeavor. Special causes: however are easy to be figured out and eliminated. For example upon discovery of a malfunction a machine repair can re-align the process of production etc. As mentioned earlier that despite the absence of exact replication, the process are considered and relied upon due to the “Under Control Factor”, the inception of process control seems essential for almost all processes. The Fundamental Concepts And Aims Of SPC: Regarding the assurance of product quality the conventional approach is to inspect the product after manufacturing in order to pass it or to reject it. This approach is found to be less economical and wasteful since a whole lot of manufactured product may be rejected due to a consistent production flaw. A better approach is to timely stop the flawed process of production in order to curb manufacturing of products that do not meet the required specifications. The process oriented approach that emphasizes on analysis of production data produced at runtime in order to control the quality of the product by keeping its construction between specifically determined limits is called Statistical Process Control. The term “Statistical” indicates the involvement, study and analysis of numeric data values that hold production information. The SPC comprises of, Selection of Observation Samples from process of production. Quality Characteristics Measurement. Data recording and calculations. Construction of Control Charts and other assisting graphs. Chart analysis for problem identification. Cause determination and rectification in case of a problem. The approach of SPC is aimed towards, Optimizing the cost – production ratio. Facilitating the production operators in identifying the problems that arise due to the usage of inappropriate materials, tools and equipments. Enabling the operators to determine the normal control limits and bearable ranges of variations in order to ease the process of frequent machine adjustments. Enabling the production managers to assess the capability extent of the production process to which it can produce a product within control limits. Supporting decision making regarding purchase of new equipment. Keeping ...Show more


[Name of University/Institute] [Name of Discipline] ‘Statistical Process Control.’ [Name of Instructor] [Name of Student] Introduction: Our world is a world of variations and inconsistencies. These variations or fluctuations can easily be observed almost everywhere in terms of actions, processes or happenings…
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