The 5 Whys: A Practical Example January 21, 2014
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A tradition of excellence TR-824 REV / Restricted Proprietary Information. Marvin Group proprietary rights are included in the information disclosed herein. Recipient by accepting this document agrees that neither this document, nor the information disclosed herein, nor any part thereof shall be reproduced or transferred to other documents or used or disclosed to others for manufacturing or for any other purpose except as specifically authorized by Marvin Engineering. The 5 Whys: A Practical Example January 21, 2014
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The 5 Whys: A Practical Example January 21, 2014. Example Illustrated. The Missing Countersink. PN 123456. Countersink Missing. Countersink. What supplier delivered. Should be condition. Example Illustrated. The Missing Countersink. PN 123456. Purchase Order Requirement: - PowerPoint PPT Presentation
Transcript of The 5 Whys: A Practical Example January 21, 2014
A tradition of excellence
TR-824 REV /Restricted Proprietary Information. Marvin Group proprietary rights are included in the information disclosed herein. Recipient by accepting this document agrees that neither this document, nor the information disclosed herein, nor any part thereof shall be reproduced or transferred to other documents or used or disclosed to others for manufacturing or for any other purpose except as specifically authorized by Marvin Engineering.
The 5 Whys: A Practical ExampleJanuary 21, 2014
TR-824 REV / - 01/21/2014© The Marvin Group 2013
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Example Illustrated
The Missing CountersinkPN 123456
CountersinkShould be condition
Countersink Missing What
supplier delivered
TR-824 REV / - 01/21/2014© The Marvin Group 2013
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Example Illustrated
PN 123456
Purchase Order Requirement:C’sink dia: .409” +/- 0.010
.409”
The Missing Countersink
TR-824 REV / - 01/21/2014© The Marvin Group 2013
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Five Whys Leg One
Countersink missing from part
Drill press operator didn’t add countersink
Job Traveler was missing instructionsfor countersink
Planning lacked instructions for countersink
Engineer Overlooked requirement for countersink on PO
Suggest what the next Why
might beSuggest thenext Why
Suggest thenext Why
There is No Defined process for creating planning
Suggest thenext Why
Engineer was going by memory of similar part without a countersink
Suggest thenext Why
TR-824 REV / - 01/21/2014© The Marvin Group 2013
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Five Whys Leg One
Countersink missing from part
Drill press operator didn’t add countersink
Job Traveler was missing instructionsfor countersink
Planning lacked instructions for countersink
Engineer overlooked requirement for countersink on PO
Engineer was going by memory of similar part without a countersink
Create process for writing planning
Add countersink instructions to job
Add countersink instructions to planning
Provide additional training to follow PO’s
There is No Defined process for creating planning
TR-824 REV / - 01/21/2014© The Marvin Group 2013
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5 Why Leg Two
Inspection process did not detect error on the part or in the planning
Provide additional training
Inspectors haven’t been trained to inspect to the drawing
Inspector checked the part against the job but not the drawing
There is no inspection plan with such a requirement
Create an inspectionplan
TR-824 REV / - 01/21/2014© The Marvin Group 2013
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5 Why Leg Two
Inspection process did not detect error in the planning
There is no requirement for QA to review new or updated planning
The Planning wasn’t reviewed by Quality Assurance
There is no defined process for QA review of planning
Create a planning review process to include QA
TR-824 REV / - 01/21/2014© The Marvin Group 2013
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Questions?
5 Whys – A Practical Example
