Why are pallets a dangerous fire hazard?

Pallets are a dangerous fire hazard primarily because they produce extreme fire loads and create horizontal air spaces. This means that when pallets catch fire, they can burn intensely and contribute significantly to the fuel available in a fire scenario. The design of pallets allows for airflow between the slats, which can facilitate the spread of fire. In addition, the tight stacking of pallets can create a situation where flames and heat travel horizontally, spreading fires more quickly through an area. This characteristic can lead to rapid fire development and increased risk to both life and property, making the fire load they present particularly hazardous in many environments.

While pallets being made of wood or easily catch fire are factors, the critical element is how their structure and arrangement can contribute to a more dangerous fire situation. The storage of pallets indoors may also add risk, but it is the combination of fire load and air space that truly elevates their potential for causing significant damage.