Using a modular design and compact components, HI-FOG® has the flexibility needed for all types of spaces, such as accommodation, public spaces, service areas, cabin balconies, machinery spaces, car decks, deep fat fryers and ducts.
HI-FOG® for Accommodation
In accommodation and service areas, HI-FOG® sprinkler heads are normally used. Each sprinkler has a heat-sensitive glass bulb which breaks at the given temperature. When the bulb breaks, the HI-FOG® pump unit automatically starts and water mist is discharged through the activated sprinkler(s).
Animation demonstrating the HI-FOG® system for accommodation areas
HI-FOG® for machinery spaces
Machinery spaces and pump rooms on vessels require special fire protection. The nature of the equipment and the heat they generate can turn small malfunctions into serious fires.
HI-FOG® has two configurations specially designed for these spaces:
HI-FOG® total flooding system: fully approved alternative to gas or foam systems for suppressing or extinguishing fires in spaces up to 6600m3 (net volume)
HI-FOG® local application system: designed and approved in accordance with the regulations for all local application systems, but has proven in real cases that it can also extinguish engine room fires in favourable circumstances without activating a total flooding system.
Both types of systems can be combined into a single integrated system for the vessel. This leads to savings in both installation and maintenance.
Animation demonstrating the HI-FOG® total flooding and local application systems
HI-FOG® for Ro-Ro decks
Ro-Ro decks and special category spaces can be protected by a HI-FOG® sprinkler or deluge system. The system type is chosen based on the vessel type and size, as well as the layout of the car decks.
The basic components of both systems are the same. Both typically use the modular HI-FOG® electric pump unit (SPU) and have either HI-FOG® sprinkler or spray heads. The number of pump modules and exact type of sprinkler or spray head depends on the size and required flow for the protected space. Where the systems differ is in the activation.
HI-FOG® sprinkler system
The HI-FOG® sprinkler system is an automatic system that uses wet tubing. The system uses sprinkler heads with heat-sensitive bulbs. When a sprinkler bulb breaks, the pressure in the system drops, creating a flow through the section valves which starts the pump unit.
HI-FOG® deluge system
The HI-FOG® deluge system uses section valves that are normally closed, with dry tubing behind the valves. Open spray heads are released in sections when activated. The activation can be manual or automatic using an external signal from a fire detection system.
Animation demonstrating the HI-FOG® system for Ro-Ro decks
HI-FOG® for deep fat fryers and ducts
Deep fat fryers are one of the major sources of fires on vessels.
Heat in close proximity to large amounts of combustible liquid (cooking oil) creates a high fire risk. Fires are challenging to put out because the hot oil needs to be cooled as well as the flames extinguished.
Pop-out spray head
HI-FOG® pop-out spray head for galleys
HI-FOG® systems for deep fat fryers and ducts are either standalone installations or intagrated into the main system. For ducts in galleys or laundry rooms, special HI-FOG® spray heads are used. The spray heads are kept protected outside the duct when not active. This prevents grease or lint from clogging the nozzle openings.
HI-FOG® for balconies
A HI-FOG® installation for balconies usually requires a special system due to the different indoor and outdoor fire protection requirements. HI-FOG® systems for balconies use either sprinkler or spray heads.
If sprinkler heads are used, the tubing is filled with anti-freeze to ensure the water does not freeze in cold climates. If spray heads are used, the system uses a dry-pipe solution.