A tool that uses a closed loop process to tie root causes with causal factors with corrective actions….. you can’t just pick your favorite cause just because it sounded good and we all voted on it.4.
Actually "5 why" is standard rule of thumb.
See TapRoot Step 3-5. The first step is to identify the problem. The purpose behind a 5-why analysis is to get the right people in the room discussing all of the possible root causes of a given defect in a process. I can use a wrench for many uses correctly and incorrectly, but does that mean a wrench is a bad tool?It is realy good article and explained in in detail.I would like to receive your articles periodiclly through my e-mail ID.5-Why has been in existance for from the time I was a student of 1st grade, almost 65 years ago.
We always teach NOT to use the tree as a presentation tool … that’s not what it’s made for.While there has been much conversation on when and how to use the “5 why’s” method, one perspective seems to be missing. The right people might give the right answeres using 5W or any other RCA tool. This is one of the most important aspects in the five why approach – the real root cause should point toward a process that is not working well or does not exist. The 7-Step TapRoot Analysis shows that. So they need training in their job, exposure to real problems and it’s solutions, and get the feel of reoccuring problems,But, there may be tools that are pushing a TEAM of engineers to a RC+solution that is different from what they initially though would be the answere. If the root causes for each “why” split into their own tracks of inquiry, you may be looking at a problem that is more difficult and, therefore, not well-suited to 5 Why analysis. Everything gets improved and updated with User input, TapRooT� uses this same concept and gets better every year in small refinements; refinements that do not change the concept and foundation, just make it easier.The point is I can make refinements to a screwdriver to make it a better pry bar (never done this myself ), or just get the right tool in the first place. )Does that make 5-whys a root cause method? How many fuses you think were replaced before looking elsewhere? Well, if we start applying the whys to that we quickly start to drive down into driving a deeper understanding of human performance factors.
The list goes on and on.Of course we could stop at anything dealing with human behavior; that can always be fixed with discipline…. The solutions should be targeted and measured and should directly impact the root causes of the whys.The beauty of the 5 Why process isn’t that it’s perfect: It’s that it gives you a method to rationally find solutions to baffling problems. He is quoted using the following 5-Why example to teach the technique:The circuit has overloaded, causing a fuse to blow.There was insufficient lubrication on the bearings, so they locked up.3. (It is easy … But it is ONLY easy if you already know the answer BEFORE you start asking why.I had a relative who works in a factory. Usually the best tool for the analysis is large blackboard or flipchart. And “No Filter” is his root cause (the fifth why).I would never call “NO FILTER ON THE PUMP” a root cause. If you’re attempting to solve for complicated difficulties, you’ll find that the root causes split into “tracks” of inquiry that have their own root causes.In other words, don’t try to solve the reasons for global poverty by asking five questions—it’s much too complex an issue.Instead, whittle larger problems into smaller ones and solve the root causes of those problems. What could potentially causing it to slip?” Instead of discovering only that the alternator pulley is loose, asking “what else cause be causing this” may reveal the belt was worn. The boss was taught 5-Whys. The why why analysis is quick, however it shouldn't be the only one method in manager's methods portfolio. By visiting our website, you agree to the use of cookies as described in our
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