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Separating Release-Ready Glass from Glass Waiting for Inspection
Give release-ready glass and inspection-held glass different physical and recorded states so production pressure cannot turn waiting into accidental approval.
Updated · NANOLAB Knowledge
A pane that has completed its required holding period is not necessarily ready for dispatch. It may still require inspection, identification or assembly approval. Treat those conditions as separate release requirements.
Use explicit states
Define a small set of statuses such as processing, waiting for required conditions, waiting for inspection, held for review and released. Make the status visible on the rack or traveller without placing incompatible labels on treated glass.
Separate physical locations where practical
| Location | Permitted meaning |
|---|---|
| Holding area | Required process time or conditions incomplete |
| Inspection queue | Ready to be checked, not yet approved |
| Review area | Unresolved issue |
| Released rack | All defined release requirements met |
A common production failure
An operator sees a full holding rack and moves the oldest panes to packing. If age is being used as a substitute for inspection status, unreviewed work can be shipped. The solution is a release signal tied to the actual criteria, not a reminder to be more careful.
Make transfers traceable
Record pane identity, the completed requirement and the person or system authorising the status change. If a pane returns for rework, reset the relevant state rather than leaving its old release label active.
Measure the right bottleneck
Track time waiting for product requirements separately from time waiting for an inspector. The first is a process constraint; the second may be a scheduling issue. Combining them hides where additional staffing or workflow changes would help.
A clear release system protects both quality and throughput because operators can see what is genuinely ready to move.
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