International intermodal transport connects ocean shipping, rail and road into a single logistics chain, with cargo passing between multiple operators. Reefer containers are the core temperature-controlled equipment in this chain, and a loss of temperature control can cause substantial cargo damage. Power is supplied by the vessel during the sea leg and through reefer connections at terminal yards. Conditions change when the container moves onto the road leg.

During road transport, the reefer unit depends on a power supply connected through a cable and socket. Long journeys, repeated stops and starts, roadside breakdowns and driver rest stops can all present risks to power continuity if the supply is interrupted. The container does not warm immediately after power is lost because its insulation provides a limited period of thermal protection. The duration depends on ambient temperature, insulation condition and the cargo itself, but many carriers lack a clear assessment of this window.

Temperature records and responsibility for losses can be even more difficult to establish. If the reefer’s temperature logger also loses power, gaps in the record can prevent cargo owners from determining how long the goods were exposed to rising temperatures. Frozen products may suffer quality damage after a modest temperature rise followed by recooling, with the effects becoming apparent only after unloading. Responsibility may then be disputed among the road carrier, terminal operator and shipping line. Temperature excursions on the inland leg can consequently lead to lengthy claims.

Risk reduction requires both equipment measures and operating controls. Before dispatch, operators should inspect the reefer’s socket, cable and insulation condition. Long-haul routes should have a mobile generator set or backup power supply available. Lightweight construction and environmentally friendly coatings support broader equipment objectives, while thicker thermal insulation can extend the protection window after a power interruption. On the management side, transport contracts should assign responsibility for power provision, define handover points and require drivers to report any outage that exceeds an agreed duration immediately.

Carriers should put clear power-supply provisions and suitable onboard backup arrangements in place, with defined responsibilities for responding at each handover. Together, these measures help maintain temperature control through transfers and inland transport, reducing cargo losses and claims disputes.

Established in 1999, CIMC Qingdao Refrigeration Industrial Base designs and manufactures ISO-standard reefer containers and a wide range of customized refrigerated and insulated specialty products. We serve customers across major logistics networks in North America, Europe, Asia, Australia and other markets. Our equipment supports sea, land and air supply chains, providing end-to-end cold-chain equipment manufacturing solutions from pre-cooling at origin and production through logistics transport to last-mile storage. Contact us to learn more about our reefer containers.

Address: No. 66–68 Xiangjiang Road, Jiaozhou City, Qingdao, Shandong Province

Telephone: +86-532-86687388 | +86-532-86687636 (Aviation Containers)

Email: customer_service@cimc.com | yunfeng.bi@cimc.com (Aviation Containers)

Website: www.qdcimc.com