90 • e 12 Principles of Manufacturing Excellence
action is not yet in place and repeat occurrences of external defects
still happen.
Stage 3: ere is early evidence that operators are beginning to take own-
ership for the product quality they produce. DPMU, scrap, dock audit,
and customer complaints and returns data are being used to do team-
based problem solving. e workplace is highly visual and includes the
status of active quality improvement team projects. Operators take it
personally if they have quality escape from their area. Operators now
have the authority to shut the process or machine down due to quality
issues. External failures are <1,000 DPMU. ere is robust use of data
to drive sustainable corrective actions. Problems are ro ...