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The 1 st Why can be formed once the Team has Brainstormed for Potential Causes. 1 st Why / Function Development. 1 st Why / Function & FMEA. 1 st Why / Function & Cause & Effect (Fishbone). 1 st Why / Function Examples. 1st Why/Function Development.
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The1st Why can be formed once the Team has Brainstormed for Potential Causes 1st Why / Function Development 1st Why / Function & FMEA 1st Why / Function & Cause & Effect (Fishbone) 1st Why / Function Examples
1st Why/Function Development D4 - Developing the 1st Why / Function …Options Option 1: Use the Affinity Diagram to naturally group ideas, Example ‘VALVE MANUFACTURING’ OR Option 2: Use the Product (Assembly) Components, Example ‘VALVE LEAKS’ TEST/ ASSEMBLY VALVE BODY ADAPTOR FLUID & FITMENT WASHER OR Option 3: Use a Circumstantial Approach, Example ‘TEAM DISAGREEMENT’ NERVES ASSOCIATED ORGANS POSTURE SPINAL COLUMN MUSCLES ASSEMBLY/ TEST RAW MATERIAL MACHINING TAPPING DESIGN/ APPLICATION OR Option 4: Use a Process Orientated (Process Flow ) approach, Example ‘COOKING’ INCONSIDERATION PLATE UP COMMUNICATION BUY INGREDIENTS PREPARE INGREDIENTS DEADLINES COOK/BAKE FOOD FRUSTRATION PERSONALITY EAT FOOD OR Option 5: Use any other logical method or Sequence, Example ‘BACK ACHES’
1st Why/Function Examples D4 - Developing the 1st Why / Function …Options Option 1: Use the Affinity Diagram to naturally group ideas, Example ‘VALVE MANUFACTURING’ RAW MATERIAL MACHINING TAPPING DESIGN/ APPLICATION ASSEMBLY/ TEST ASSEMBLY/ TEST RAW MATERIAL MACHINING TAPPING DESIGN/ APPLICATION Seal Surface Deteriorates I Adaptor damaged thread Damaged face of Valve Missing Washer Vibration of Valve Applicable points from the Brainstorming Wrong Washer Operational Use Thread Pitch D4 - Developing the 1st Why / Function …Options Option 2: Use the Product (assembly) Components, Example ‘VALVE LEAKS’ WASHER VALVE BODY TEST/ASSEMBLY ADAPTOR FLUID & FITMENT Components of Valve Washer Valve Body Test/Assembly Adaptor Fluid & Fitment
1st Why / Functions & FMEA 1st Why = the Function The Function describes each Process Step in aProcess 1st Why Functions RAW MATERIAL MACHINING TAPPING ASSEMBLY/ TEST DESIGN/ APPLICATION • Select which Possible 1st Why Function • you would like to Investigate 2nd Why 2nd Why 2nd Why 2nd Why 3rd Why 3rd Why 3rd Why 4th Why 4th Why 5th Why
Automatic Population of C&E (Fishbone) The 1st Why will be forwarded to the 1st Arms of the Cause & Effect Diagram
This completes the D4 1st Why Now start the D4 2nd Why