As result of this technical problem solving process we have the 8D-Report (in automotive industries) or the CAPA process and report in pharmaceutical industries and others. This is one of the reason that this problem solving strategy is taught in most quality programs.In many companies the problem solving process is defined as a technical problem solving process regarding quality issues a product or (production-) process might have. Like any good plan, you gain the faith that if you simply follow the plan that you will make progress, even if that progress is the elimination of most of your candidates. It has the allure of being organized, systematic and complete. With one quick glance, it is easy to see how a problem can be broken into easily definable categories that can be validated or invalidated fairly quickly. One of the most attractive aspects of the Ishikawa diagram is the fact that it is highly visual and very systematic. The benefit of the Ishikawa diagram is that it creates a strong visual method of establishing several hypothesis that can be investigated through the process. If you look at the two processes, with the exception of semantics, they are actually identical. How this lines up with the Scientific methodĪs discussed in a past post, the scientific method is one of the oldest documented problem solving techniques we have at our disposal, so it is not surprising that later problem solving techniques can have a very similar format. Once the fishbone is completed with supporting data, it’s time to investigate from the most likely potential causes to understand how they may be impacting the problem. Within each categories there are secondary or root causes that can be investigated for their influence on the problem. In most manufacturing settings these problems are pretty easy to establish simply because these same 6 categories impact everything in manufacturing in one form or another: The reason that these categories are being established is to see how various factor may actually influence the problem. The nature of these categories have to be discreet and avoid overlapping as much as possible. Once the problem is defined, very specific categories of the problem are established. This method of problem solving is very methodical and visual, but before you approach it, you have to have a very well defined problem, with defining the problem, all efforts will be in vain. One method of problem solving known as an Ishikawa diagram (AKA cause and effect diagram, AKA fishbone diagram), was developed in the 1960s by Dr. See if a shift in one of these causes can give you a different effect to explore.” - Dr. “Think of at least four factors which influence your problem. In other words, answering these questions is the first stage of solving a problem also known as “Defining the problem”.
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