Supply relationships5 / 24

The WHO guide starts from 12 fixed sensors; a medium-sized cold unit typically gets about 20 sensors plus one for ambient.

Match device identity to reference, date, result and use decision; link certificate information to the relevant trip record.

Select sensor points from pilot load geometry and observed hot or cold spots; record location evidence rather than a fixed device count.

Match the raw file to logger identity, trip time and time zone; retain checksum, version and data gaps in the decision file.

Do not rely on battery indication alone; test before dispatch for the device, interval and conditions, then verify the file on return.

Name the first receiver, response record, backup escalation and authorized product-decision role for each alarm.

Alarm delay is not one interval: separate sampling, transmission, notification and response, then add their worst cases.

Preserve raw data, build a shared timeline and test each possible cause against supporting or contradicting evidence.

Link event evidence to a verified root cause, action owner and date, then to an effectiveness check.

When SKU, material, plates or layout change, document whether the prior qualification still applies.

Manage the effective date, training and withdrawal of old copies in one change process.

Link container ID, wash programme and visual inspection in one record; track release and rewash separately.

Record repair type, replaced part and affected function; complete the relevant check and link acceptance to the container ID.

A sample shift matrix shows who can do each task independently, who is learning with support and where coverage is thin.

Verify the repair against the model's instructed test; link container ID, load profile and first-dispatch result to the maintenance record.

Damage, repairs, route or product changes and recurring deviations can warrant review of the thermal plan.