Portable fire suppression devices, commonly found in vehicles, contain pressurized substances designed to extinguish small fires. Exposure to elevated temperatures, such as those experienced inside a closed vehicle during hot weather, raises the internal pressure within these canisters. Excessive pressure buildup can compromise the structural integrity of the container, potentially leading to a rupture or explosion. The likelihood of this occurrence depends on factors including the initial fill level, the type of extinguishing agent, the canister material and construction, and the maximum temperature reached.
The potential for a pressurized container failure presents a safety hazard. Such an event could result in projectile debris, causing injury to individuals in the vicinity or damage to property. Furthermore, the sudden release of the extinguishing agent may create a hazardous atmosphere, depending on the type of substance used. Historically, there have been documented cases of pressurized containers failing due to heat exposure, underscoring the need for proper storage and handling procedures.