Why are pallets considered a dangerous fire hazard?

Pallets are particularly hazardous in fire situations primarily because they produce extreme fire loads and create horizontal air spaces that can facilitate the rapid spread of flames. The design and construction of pallets allow for significant air circulation, which can enhance combustion. When pallets burn, they can release a considerable amount of energy, creating intense heat and flames that threaten nearby structures and safety.

Additionally, the spaces between pallets enable flames and heat to travel horizontally, making it easier for a fire to spread quickly across a larger area. This vertical and horizontal potential for fire spread makes pallets a significant risk in both storage areas and during transportation. While untreated wood and flammable chemicals can also contribute to fire hazards, it is the combination of high fire load and structural design that underscores the danger of pallets in a fire scenario.