A road closure or breakdown can cause delay; product endurance cannot be known without product, vehicle and packaging evidence.
Write the incident plan in advance
For mountain routes, include the call tree, alternate stopping points, service or transfer contacts and decision owner in the dispatch file.
During an incident
Follow company emergency instructions for driver and public safety first. Report vehicle unit, fuel or power status and location to dispatch.
Capture the logger trace and timestamps. Make door-opening or equipment-intervention decisions under approved instructions.
Consider product risks beyond ambient air; do not infer cargo condition from outside temperature alone.
Decide whether to transfer
Before using a backup vehicle or holding area, confirm product instructions, equipment suitability, record continuity and safe access with the responsible owner.
Record transfer time, seal or container condition, logger ID, and handing-over and receiving persons.
Decide product status after the event
Segregate cargo when needed. Authorized quality staff should review actual temperature history, duration, product criteria and data gaps together.
An assumed number of hours or visual appearance is not a criterion for use or disposal.
Keep the incident record and decision rationale together in the shipment file.
A delay does not establish a safe duration for the product; use the evidence to improve the next plan.