TQM Approach |
The question 'What is quality?' may be debated at length, and there are many definitions. For now, lets assume it primarily means 'Giving the customer what he/she wants', and 'consistency'. |
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Consider a manufacturing process. There are a number of ways it may endeavour to ensure the customer gets what he/she wants. | ||
1. The process can make good product, but is unreliable, and defects escape into the market. If customers complain their complaints are resolved. This is costly and may harm reputation. | ||
2. Inspectors detect bad product at the end of the process and repair/reject it to protect the customers. This is costly and frustrating; deliveries will be delayed or costly buffers of finished goods required. | ||
3. Defects are returned to source for rectification or rework. Costs remain, as in (2). There are delays in identifying problems so causes may not be apparent. | ||
4. Defects are detected at source, causes will be more obvious. Delivery remains erratic, downstream customers are kept waiting, but at least they're not adding value to defective product. | ||
5. Defects are prevented. Through improving products and processes we can assure delivery without incurring rectification costs. There are a number of things which we have to accept if we wish to achieve the scenario depicted in (5):
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Six Sigma is a similar approach which uses the same tools and techniques, 're-labelling' some and according the title 'Black Belts' etc. to the facilitators. It's simple (but not easy!) goal is to achieve six sigma capability of all business processes - a 3.4 ppb defect rate. |
The web site dedicated to improving manufacturing competitiveness |
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genba-kanri.com |