Load Fires By Sub-Cause
While relatively common in lower value insurance losses, it is relatively uncommon for
a loss over the $50,000 threshold to occur due to a fire initiated by the load.
When considering all claims regardless of cost, the most common load to catch fire is
waste material in the garbage collection industry.
These fires are commonly caused by improper disposal of hot waste (e.g. ashes from
fireplaces) or through spontaneous combustion resulting from the heat of some waste
Refrigeration Fires By Sub-Cause
Refrigeration units on heavy trucks and trailers are a standalone air-conditioning
system typically powered by a small diesel engine.
Fires in refrigeration units usually result from either an accumulation of flammable
dust and other material around the heat exchanger or from leaks in the diesel fuel
system, in either case, this is typically then ignited by heat from the ignition system.
Engine/Cabin Fires By Sub-Cause
Engine/Cabin fires are split between those which result from electrical fires and those
which come from the failure of a mechanical system. Of the electrical fires, the
overwhelming majority of these are caused by the main starter motor power feed cable,
with most of the remainder being from alternator power output cables.
For the mechanical failures, common causes include high pressure fuel system leaks,
turbocharger failures and hydraulic and oil line failures.
Wheel End Fires By Sub-Cause
The predominant initial trigger for wheel end fires is either wheel bearing or tyre
failure. This is closely followed by fires initiated by the braking system.
Brake fires typically result from some defect in the parking brake system which results
in the spring-applied park brake being lightly applied. Over time the dragging brake
causes a build-up of heat and this results in spontaneous combustion.