A temperature excursion is a recorded event in which a product’s temperature moves outside its specified range for a measurable period, requiring assessment of the potential impact on safety and quality.
In trade practice
Logger data is the primary source of excursion evidence; QA teams review the duration, magnitude and point in the journey at which the breach occurred. For quick-frozen foods, EU quick-frozen foodstuffs rules permit only brief upward fluctuations, and any excursion beyond that tolerance must be formally assessed. Suppliers are typically required to provide a written root-cause analysis and corrective action report. Repeated excursions on the same lane or from the same carrier indicate a systemic cold-chain failure rather than an isolated incident and may trigger supplier review.
In a specification
A cold-chain specification or quality agreement should state the temperature range, the maximum tolerated excursion duration, and the procedure for notifying the buyer and documenting the assessment outcome.