The Fishbone: A How ToOutside Factory Edition
Created by Tom Curtis 2011Blog: www.onimproving.blogspot.comOther presentation on www.slideshare.netUnder Onimproving Email: [email protected] me on Twitter @onimproving
IntroductionA fishbone diagram helps us look at Causes and Effect. For an effect, we look at multiple causes
and place them in categories. This helps us think through what might be driving the effect before we start fixing. It is a good step to help us on the path to identifying root cause and then
design corrective actions. What follows is how to set up a fishbone in steps and an example. The
fishbone can become a great aid in helping think through problems. Give it a try. --Tom Curtis
Steps 1-3Prepare the Fishbone
1
Add the Red Elements
Draw the Lines
2 Add Labels
Causes
Effect
3 Add Bone Labels
Causes
Effect
Procedure
People Process
Systems
Steps 4-5Use the Fishbone
4 Record Effect
Causes
EffectIssue
Procedure
People Process
Systems
5 Record Causes by Category
Causes
EffectIssue
Cause
Cause
Cause
Cause
Cause
Cause
Cause
Cause
Cause
Procedure
People Process
Systems
An Example:Using the Fishbone
Causes
EffectUnable to find
needed file
Each user has own filingprocess
Lots of users
Poor file Naming
No file naming procedure
No History of files recorded
Allow deletion by all users
Lack of organization
Notes: -Causes may fit in more than one category-Causes can be further explored with 5 whys-Not all categories may apply-Categories can be customized
Procedure
People Process
Systems
Out of date filing structure
Some files not filed Some files not filed
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