At which points should defect rate and quality checks be performed in a package sort process?

• A. Only when a problem is reported.
• B. Randomly throughout the day.
• C. At checkpoints.
• D. At the start of the shift.

Answer: (C)

Quality checks and defect-rate monitoring should happen at checkpoints—defined moments along the package sort process where you verify that each stage is completed correctly before moving on. This systematic, stage-specific verification catches defects early, gives immediate feedback to operators, and prevents issues from cascading into downstream steps. If you wait for a problem to be reported, or only perform checks randomly or at the start of a shift, defects can slip through and become harder to trace. Checkpoints provide consistent quality control aligned with the workflow, so the overall sort remains accurate and reliable.