What type of suppression system is not effective on self-oxidizing fuels?

Total flooding halon systems are not effective on self-oxidizing fuels due to the unique properties of these fuels. Self-oxidizing fuels, such as certain types of organic peroxides or oxidizing agents, have the capability to sustain combustion without an external oxidizer. Halon systems work by interrupting the chemical reaction in the fire, effectively displacing oxygen and reducing the heat. However, since self-oxidizing fuels do not rely on atmospheric oxygen to burn, removing oxygen or cooling the flame through a halon system does not address the intrinsic burning characteristics of these materials.

In contrast, foam suppression systems can blanket the fuel surface, effectively smothering the fire and interrupting the burning process. Water mist systems also can lower temperatures and reduce the concentration of combustible materials in the air, providing some degree of efficacy in controlling certain fire types. Gas suppression systems might create an inert atmosphere that can be beneficial for some types of fires but still would not effectively combat the characteristics presented by self-oxidizing fuels. Thus, while other systems have their uses, total flooding halon systems are specifically not effective when it comes to these types of fuels.