What we have written on the cold chain153 / 154

Check equipment documentation by model scope and HACCP records against the operation's own process.

Wall thickness alone does not show heat loss. Inspect joints such as corners, hinges and seals, and measure with a temperature difference.

When the unit stops, the display value is not the product temperature. Keep the doors shut, measure and log the product with the time, and send the load to a point named in advance.

For quick-frozen food, ambient temperature is recorded with a device meeting TS EN 12830, 13485 and 13486, at frequent and regular intervals, with date and time, and kept for at least one year.

Plan for a dry ice interruption using your own supply and usage records, not assumed market rates. Trial a backup on route.

Dry ice does not melt; at -78.5 °C it turns straight into carbon dioxide gas, and in an enclosed space the risk is that this gas is heavier than air and pools low.

Do not compare purchase price alone. Total costs for the same period, route and acceptance criteria, then divide by accepted deliveries.

ATP and HACCP wording is not a purchasing file. Check model, scope, issuer, date and your own use separately on the document itself.

Container count alone is not capacity. Track use, return, excursions, loss, washing and maintenance with explicit numerators and denominators.

A fixed trip count cannot validate every route. Assess real loads, temperature records, workflow and changing conditions against criteria set in advance.

Routine observation can reveal closure or panel damage early. Set repairs and intervals by model and authorised service advice.

One chemical recipe does not fit every surface. Identify the soil, follow product and equipment instructions, then check and record the cleaning.