The report is completed the moment the excursion is noticed, with the measuring instrument still in hand; a sheet written from memory hours later carries no weight in an audit or a damage dispute. The first observation, what was known at that moment and what remains unexplained are kept apart. FAO's monitoring and corrective-action guidance also asks for the cause of a deviation and what was done with the affected product to be written into the records and reviewed regularly.
Written at once, the report turns temperature and timing lost along the cold chain into evidence.
The timeline
Discovery time, measurement time and the logger timestamp are separate fields: noticing an excursion at 14:20 does not establish that it began then. Record the last in-range and first out-of-range timestamps, and say so when the sampling interval or a data gap prevents an exact start. Separate excursions are not merged into one continuous event, and the device clock is matched with the time zone of the incident record.
| Field | How to write it | Keep apart from |
|---|---|---|
| Observation | Who saw what, where and when | The unknown real start |
| Measurement | Value, unit, point (air or product core), device, calibration | The logger's raw timestamp |
| Load | Product, lot, quantity, location | The disposition decision |
| Action | Segregation, hold, correction; who did it | Correction is not release |
| Cause | Fact and suspicion on separate lines | Verified root cause |
| Closure | Reviewer, decision, follow-up owner | The outcome of prevention |
The door may have stayed open, a device may have drifted or loading may have been delayed; in the first report these are marked as suspected causes, because the shape of a chart does not prove cause. An unverified cause written as root cause weakens the record. Raw data and photographs are attached by ID, and a later addition shows its actual entry time and author.
Action and product decision. Segregating the affected load, restoring the cooling process and assigning an owner are action lines. The decision to release, use or destroy the product is written separately with its basis and belongs to the quality or food-safety lead. According to FAO, product affected by a deviation is treated as potentially unsafe; corrective action both restores control of the process and deals with what happens to that product. Temperature returning to target satisfies only the first.
Closure and follow-up
At closure record the reviewer, data gaps, decision, follow-up owner and due date, and name the record or repeat check that will show the correction was carried out. Carry the event ID into the period review so that closure evidence for the same action can be reached from the audit form.
