Defect rate reduction is done in several ways as follows:
- When the defect rate is tolerable (that is, within the AQL or the “Acceptable
Quality Level”), the data is recorded and put under monitoring.
- When the defect rate is not tolerable (in this case, it is above the AQL), the
problem is reported in a “LOT OUT” procedure for the concerned entity to
investigate the root cause and implement measures.
- On a monthly basis, the defect rate data is gathered and analyze with the use of
the PARETO graph. The top 5 problems are identified. The top five problems are
then acted upon with measures implemented and monitored for improvement in
the succeeding months. This is reported in a monthly quality meeting and is
discussed for further improvement action.