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articles:those_who_fail_to_plan [2020/05/12 12:02] – rrandallarticles:those_who_fail_to_plan [2020/07/31 14:25] – rrandall
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 One of the best and most effective tools for performing a structured RCA is the Ishikawa Fishbone chart (shown below). Fishbone charts typically categorize problems through the 6 Ms (Manpower, Materials, Measurements, Machines, Methods & Mother Nature) that originated with Lean Manufacturing and the Toyota Production System. One of the best and most effective tools for performing a structured RCA is the Ishikawa Fishbone chart (shown below). Fishbone charts typically categorize problems through the 6 Ms (Manpower, Materials, Measurements, Machines, Methods & Mother Nature) that originated with Lean Manufacturing and the Toyota Production System.
  
-{{ :articles:1920px-cause_and_effect_diagram_for_defect_xxx.svg.png?nolink&700 | Ishikawa Fishbone Chart }}+[{{ :articles:1920px-cause_and_effect_diagram_for_defect-transparent.png?direct&700 | Ishikawa Fishbone Chart }}]
  
 And Fishbone charts are commonly used as a structured approach to identifying "Failure Modes" in a FMEA (Failure Mode and Effects Analysis). And Fishbone charts are commonly used as a structured approach to identifying "Failure Modes" in a FMEA (Failure Mode and Effects Analysis).
  
  
-Had a series of PFMEAs (Process Failure Mode and Effects Analysis) been completed during the planning stage, virtually all of the above "root causes" would have been eliminated before they were realized. And where issues are identified that contribute to process "common cause variation" (that cannot be removed without changing the process), the PFMEA will be helpful in identifying actions to "mitigate" the likelihood of occurrence and/or the severity of its impact.+Had a series of PFMEAs (Process Failure Mode and Effects Analysis) been completed during the planning stage, virtually all of the "root causes" (//special cause variations//) would have been eliminated before they were realized. And where issues are identified that contribute to process "//common cause variatio//n" (that can only be eliminated through changing the process), the PFMEA will be helpful in identifying actions to "mitigate" the likelihood of occurrence and/or the severity of its impact.
  
 Very few of the companies I've visited have ever performed any PFMEAs as part of their planning. IF they had, then the costs associated with their product returns, customer complaints, and performing individual Root Cause Analysis (RCAs) and Corrective Actions would have been dramatically reduced. Very few of the companies I've visited have ever performed any PFMEAs as part of their planning. IF they had, then the costs associated with their product returns, customer complaints, and performing individual Root Cause Analysis (RCAs) and Corrective Actions would have been dramatically reduced.