Special Risks

Deluge is an activation mode where all nozzles in an area are simultaneously activated by a mechanical action (pilot line under water or air), electronic action (smoke, flame detection), or manual action.

For high fire risks, it is often necessary to implement cooling systems for structures and equipment to prevent chain thermal reactions.

Furthermore, water curtains or systems to block thermal flows may also be required. In both cases, our teams have the expertise to implement systems using deluge-type fire networks.

Foam systems are mainly of three types: low expansion, medium expansion, and high expansion.


Low expansion is notably used to extend the cooling action of deluge systems (e.g., enhancing the cooling ring around a hydrocarbon storage tank).

Medium Expansion Foam
Medium expansion involves applying a layer of foam, typically onto a flammable liquid (hydrocarbon, oil, etc.), to isolate the burning liquid from oxygen and thus extinguish the fire (e.g., protection of a containment bund).

High Expansion Foam
High expansion aims to fill a volume within a given time so that oxygen is displaced and fires on solid materials are thus smothered (e.g., protection of hazardous product storage in a classified warehouse).