8D Process
Supplier Quality Assurance (SQA) 2
Table of Content
Introduction ............................................................................................................... 4
1-5-20 Rule ................................................................................................................ 5
D1: Formation of a problem-solving team .............................................................. 5
D2: Problem description .......................................................................................... 6
5W1H Method .................................................................................................. 6
D3: Containment actions ......................................................................................... 8
D4: Root cause analysis .......................................................................................... 9
1.1 Application ......................................................................................... 9
Root cause types............................................................................... 9
QM-Tools for the root cause analysis: ............................................. 10
1.2 Procedure ........................................................................................ 11
Identify possible causes .................................................................. 11
Evaluate possible causes ................................................................ 12
Identify the root cause ..................................................................... 13
Confirm root cause .......................................................................... 15
D5: Potential corrective action .............................................................................. 16
D6: Implement corrective action ........................................................................... 17
1.1 Implementation plan ........................................................................ 17
1.2 Proof of effectiveness ...................................................................... 17
1.3 Update standards ............................................................................ 17
D7: Take preventive action .................................................................................... 18
1.1 Update relevant documents ............................................................ 18
1.2 Share information ............................................................................ 18
Read across (Yokoten): ................................................................... 18
Lessons learned: ............................................................................. 18
D8: Closure and team celebration ......................................................................... 19