High expansion foam fire extinguishing systems are particularly suited to closed spaces, such as ship compartments, but can be designed to extinguish fires on open decks.
Thanks to their delivery systems and the characteristics of the foams, these systems can cope with the effects of the wind and the fact that the separation of oxygen from the flames is obviously more complex than in a closed environment.
In the marine sector, moreover, a source of possible fire-triggering concerns kitchen fryers that may contain significant amounts of oil; also in this case, foam systems are used optimally.
Foam is a cost-effective technology, safe for the crew and the environment (foam does not release dangerous decomposition products in contact with high temperatures), as well as being fast and effective.
When it expands, the foam suffocates the fire, separating the fuel from the combustible item, and allows cooling that hinders the resumption of the flames, while also reducing the evaporation of flammable vapours in the air. The systems used ensure the total saturation of an environment with the filling speed of the rooms by the foam of almost two metres per minute.
The speed is guaranteed by the high ratio of expansion of the foam agent which also allows low water consumption (freshwater and/or seawater).