WHERE CERTIFICATES ACTUALLY LIVE
A ring binder in a supervisor's office, and nobody's calendar.
Calibration does not fail because people are careless. It fails because a certificate is a piece of paper whose expiry is known only to whoever reads the small print on it.
The laboratory
Issues the certificate, posts it, and has no obligation or mechanism to tell anyone when it lapses. Their work ended at issue.
The supervisor
Files it. Knows roughly which instruments were done last year. Leaves the company eventually, taking that knowledge with them.
The production line
Uses the instrument daily. Has no view of the certificate at all and no reason to think about it.
The auditor
Finds out, once a year, by opening the binder. This is the only moment the register is ever assembled.
The customer
Receives goods weighed on the scale. Has no way to ask whether it was in calibration on the day of their shipment.
The expiry date is printed on every certificate. It is simply not attached to anything that acts on it.
If you calibrate instruments, or depend on them.
Still at the design stage. What would help is a picture of how validity is tracked where you work, and what a missed expiry has cost.
sari.handayani@teraberlaku.online
Tangerang, Banten