WHY WHY ANALYSIS
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(Fig. 1-1) Phenomenon Why 1 Why 2 Why 3 Remedy Explanation section is not clean Clean the section. section is not clean . No standard for cleaning . Difficult to clean Takes time to remove a cover from . Make the cover emovable i one-touch action Establish a cleaning standard (once/week) Measure nt Example of correction Why Why Analysis (the approach from the principles and rules) Repeat asking "'WHY" until recurrence is prevented If the analysis is finished at the point of' is not cleaned ' Fig 1-1 , the answer will be 'Then we will clean there.' and the analy is ended. As explained in the example of correction, if the analysis is not regularly performed in a form of standard, and if another person comes the same trouble may occur again someday. Even when a cleaning standard is established, if it is difficult to do that cleaning will not be actually done when the workers are very busy production.
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