The heatwave conditions searing much of Australia in recent days are an increasingly urgent insurance stress test. For property writers, the focus is often on bushfires and direct property damage. But in the transport and logistics sector, heat is a far more multifaceted exposure, reshaping risk profiles for goods in transit, critical infrastructure, operators and the supply chains that connect them.
A recent freight train derailment on the East West railway line in South Australia between Port Augusta and Port Pirie – still under investigation, but early indications suggest heat was a factor – halted a crucial national freight artery for days. It could underline how a single incident caused wholly or in part by extreme temperatures can ripple through multiple classes of cover.
“Given the conditions, anything temperature sensitive will be at significant risk of loss or damage and if any goods have spilled there could be clean up costs as well,” said Daniel Morrison (main picture), head of marine for NTI.
It’s still not known what goods, if any, the freight train was carrying. SA CFS deputy state controller Brenton Hastie told ABC Radio Adelaide that there was no HAZMAT leak and no hazardous materials risk to manage.
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Refrigerated food, pharmaceuticals, chemicals or bulk commodities all respond differently to prolonged exposure, delays and potential spillage. Clients can still face significant uncovered costs from spoilage, contamination, clean-up and delay.
“The nature of heat-related losses in our world is often indirect,” he said. Rather than dramatic failures blamed squarely on temperature, claims are more likely to stem from associated stress and fatigue on people and machinery, increased ignition potential for bushfires, or inadequate preparation of cargoes for an environment that is hotter, drier and more volatile than historical norms.
“Obviously extreme temperatures can be a challenge for road and rail networks as well as a challenge for the people operating in the industry,” said Morrison.
From a systems perspective, the South Australian derailment – where 11 wagons partially derailed on a critical junction used by east–west and north–south services – shows how fragile national freight routes can be. According to ABC News, the line is expected to be out of service for days, affecting services between Sydney and Perth, Melbourne and Perth, and Adelaide and Darwin, with recovery work slowed by temperatures in Port Augusta forecast to reach 47°C.
For brokers, the lesson is how extreme heat can expose how concentrated and interdependent key logistics links have become.
Morrison said NTI is not currently seeing a spike in heat-related transport claims, but exposure is rising as heatwaves become more frequent and prolonged. That includes not just the risk of derailments or road incidents, but the knock-on impacts of bushfires, cyclones and flooding on already stretched networks.
Temperature-sensitive cargo is especially vulnerable when high heat coincides with disruption: delays, re-routing and congestion can all chip away at product integrity. In practice, that can turn a minor operational issue into a significant insured loss where there is inadequate planning around cold chain resilience, backup power, alternative routes or stock rotation.
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Brokers would likely also be aware of the human factor. Long shifts in extreme heat increase fatigue and error rates for drivers, yard staff and maintenance crews. That elevates liability and workers’ compensation exposures and can interact with property and cargo risks in unpredictable ways. Morrison said brokers should ensure that the exposure of people, as well as equipment, to heat and fatigue is monitored and managed appropriately to limit potential loss or disruption.
For brokers, that translates into some practical focus areas when advising transport and logistics clients:
At this time of year, multiple perils – extreme heat, bushfires, cyclones and flooding – can converge to disrupt logistics and damage infrastructure across the country. That demands holistic conversations about limits, sub-limits, accumulation risk and the interplay between cargo, liability, business interruption and contingent business interruption covers.
For brokers, the South Australian derailment is a timely reminder that heatwaves are not just uncomfortable; they are strategic risk events. As temperatures climb and freight corridors strain, brokers who can help clients anticipate and manage these exposures will be central to keeping Australia’s supply chains – and insurance programs – on the rails.
