There are only 2 possible causes for #RootCauseAnalysis and it’s very close to #TWI from #Lean
A friend of mine just reported a very interesting insight from a meeting he had with the japanese man (sorry didn’t took note of his name) who invented QRQC or Quality Circles. I’m posting this here as the guy doesn’t have a blog of his own.
The two possible root causes are:
- failure to instruct properly, which is what TWI Job Instruction is about
- failure to setup your process properly, which at first the japanese man presented as a bad FMEA.
And what’s in a FMEA? 1) Overall steps of a process 2) Key points and 3) risk analysis
Can you see how close this is to a TWI Job Breakdown Sheet with the 1) steps 2) key points and 3) justifications of the key points (where the justification is a risk mitigation technique in itself to ensure memorization of the key points)?
So basically, you end up with the only two possible root causes of any problem :
- bad Job Breakdown Sheet (description and organization of the job)
- bad Job Instruction (instruction of that job)
Originally published at Appreciating Systems.