Evaluating Tooling Qualification and FAT Verification Records across International Sites
Tooling qualification demands auditing raw CMM trace data and thermal stability logs at vendor FAT rather than accepting summary capability sign-offs.
Calibration Log
Meaning
A formal record documenting the testing and adjustment of measurement instruments ensures that equipment performance aligns with established reference standards. A calibration log tracks the historical accuracy of specific tools over time, identifying when a device begins to drift or when it requires maintenance. This preventative logging helps confirm that all products manufactured using the device meet technical specifications before shipment.
Verification Record
Measurement procedures rely on traceable reference standards to validate instrument accuracy before production runs begin. Each entry in the calibration log provides the raw deviation data and the environmental conditions during the test. If a sensor fails to meet the required tolerance, the record captures the corrective actions taken.
Operators consult these entries to decide whether to adjust the current machinery or isolate the batch.
Interval Calculation
Scheduling checks relies on historical drift rates. A calibration log provides the data to adjust the time between checks.
Audit History
Quality audits require complete traceability of all test instruments back to national metrology standards. Having a complete calibration log prevents the costly rejection of entire product batches during a regulatory inspection. Auditors review the sequential history of each instrument to ensure that no uncalibrated tools were used in assembly.
When records are incomplete, the plant faces expensive retesting of already shipped products.