Measurment of DPU/DPMO in Assembly process

sushant_kulkarni

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#1
Dear All,
I have manufactured Heat Pump assembly unit. During assembly each unit required 2-3 days to complete.
These operation consist of 7 no. of stages.
Each stage has multiple defect observed.
I need to start measuring defect level.
Should I start with DPU concept? Is that Applicable here?
What are the requirements of defect per unit?
Should I collect all opportunities of defect at each stage?

Can any one help for addressing defect level in assembly operation?
 
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Bev D

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#2
DPU (defects per unit) is the best method. DPMO (defects per million opportunities) is very difficult to do as the number of opportunities is quite open to debate and manipulation and in the end it doesnt’ help you understand your ulaity levels or drive improvements any better than DPU. It jus provides opportunities for debate, denial and delay.
 
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