Tag Archives forqualitypedia

Seven/ Eight Types of Wastes TIMWOOD

What is Waste?Waste is anything that does not add value to the existing process. We should avoid waste not only to reduce cost but also it increases the long-term performance of a process. Seven Types of Wastes (TIM WOOD)I suggest that you keep in mind TIM WOOD (the acronym for the seven types of wastes) […]

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Poka Yoke, Fool Proofing or the Mistake Proofing

What is Poka-yoke? Shigeo Shingo advocated the concept of zero quality control by arguing that inspection processes or the use of statistical control should be completely eliminated. He believes that quality should be controlled at the source of the problem and not after the problem has manifested itself. He recommends that inspection should be incorporated […]

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Kaizen

What is Kaizen? Move a mountain beginning with small stones. Definitions It is derived from the Japanese words kai which means change or to correct and zen which means good), Kaizen is a Japanese word means change for the better. Kaizen is a participative and democratic approach that involves every employee – from upper management […]

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5S for Workplace Improvement

5S is a workplace improvement tool. It was invented in Japan. It stands for five (5) Japanese words that start with the letter ‘S’: Seiri, Seiton, Seiso, Seiketsu, and Shitsuke. 5 S 5 C English Equivalent Explanation Seiri Clear out Sort (Tidiness) Throw away all unrelated materials in the workplace Seiton Configure Set in Order […]

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Kano Model by Noriaki Kano

The Kano model was developed by Noriaki Kano. It classifies the attributes of a product into three groups. 1. Basic or Threshold Attributes. Customers assume that these attributes will be present. If they are not present or are of low quality, customers will be dissatisfied. If they are present, customers’ satisfaction will not increase. Example: […]

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Defect – Definition and Causes

What is a Defect? A flaw or weakness in a system that causes the system to fail Non-conformance to a standard A disorder in the system or process which can cause a failure or discrepancy in the delivery of product or services. Expectations are not meet. A defect can be seen as an opportunity for […]

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Difference Between: Quality Assurance (QA) and Quality Control (QC)

 ​Many people have asked me about the difference between Quality Assurance and Quality Control. Here is the summary: ISO 9000 DefinitionsQuality Control:A part of quality management focused on fulfilling quality requirements.Quality Assurance:A part of quality management focused on providing confidence that quality requirements will be fulfilled.​Other Definitions​Quality Control is defined as The operational techniques and […]

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Causes of Poor Quality

Poor Quality The market is customer-centric. Competition is very high. Still, most of the companies face the problem of poor quality. In spite of various quality models, quality improvement processes and methodologies the issue of poor quality is there. Why is it so? What are the causes of poor quality? Causes of poor quality may […]

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Understanding Quality – Definitions and Dimensions

The challenge in defining quality is that it is a subjective concept, like beauty. Everyone has a different definition based on their personal experiences. Definitions The totality of characteristics of an entity that bear on its ability to satisfy stated and implied need. Quality is the ongoing process of building and sustaining relationships by assessing, […]

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Average Outgoing Quality (AOQ)

Average Outgoing Quality (AOQ): The expected average quality level of an outgoing product for a given value of incoming product quality. AOQ plot represents the relationship between the quality of incoming and outgoing materials. When incoming lots are very good, the outgoing quality will be good. When incoming lot is very bad, then also the […]

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Average Outgoing Quality Limit AOQL

Average Outgoing Quality (AOQ) plot represents the relationship between the quality of incoming and outgoing materials. When incoming lots are very good, the outgoing quality will be good. When the incoming lot is very bad, then also the outgoing quality will be good because poor lots get reinspected and fixed. See the graph showing the […]

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Dodge Romig Sampling Plans

Plans for acceptance sampling developed by Harold F. Dodge and Harry G. Romig. Four sets of tables were published in 1940: single sampling lot tolerance tables, double sampling lot tolerance tables, single sampling average outgoing quality limit tables and double sampling average outgoing quality limit tables.

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