What occurs during auto ignition?

During auto ignition, a flammable vapor ignites without any external ignition source, which typically occurs when the temperature of the vapor reaches a critical level and causes it to ignite spontaneously. This process is significant in fire safety and prevention, as it means that materials can catch fire even in the absence of flames or sparks if conditions such as heat and concentration are favorable.

In continuous exposure to a heat source or after reaching a specific temperature threshold, the energy within the vapor molecules can cause them to react chemically, leading to combustion. This scenario emphasizes the importance of temperature control in environments where flammable materials are present, making auto ignition a critical consideration in safety protocols and risk assessments aboard vessels and in other hazardous industries.