Monitoring during a run and later verification answer different questions. Review planned measurements in run records and plan implementation across period records.
Read data by layer
- Monitoring: the run measurement required by the plan and recorded corrective action.
- Verification: coverage, recurring findings and outcomes of earlier actions.
Review the period
- Match planned runs to records found.
- Separate gaps from measured deviations.
- Group patterns by hour, route, vehicle or container.
- Compare records before and after a correction.
- Record changes that may affect the plan.
Limits of one run
One trouble-free run does not show that the plan was followed at other times or hazards remained controlled. State period and coverage.
Role of the TBX record
A TBX record is measurement data for a particular device and run; it does not replace equipment documentation or the HACCP plan. Link its ID to route and planned monitoring.
Verification reviews evidence about the plan across a period.
From finding to decision
For example, if records are found for 18 of 20 planned runs, investigate two as a coverage gap; those 18 do not represent the whole period.
