HI-FOG is the world's leading water mist fire protection technology, developed by Marioff Corporation for use on Marine Vessels and offshore structures and protecting an increasing range of land-based applications.

HI-FOG is an innovative fire protection technology utilising high pressure to produce a fine water mist with average drop size of 50 - 120 µm. HI-FOG combines the extinguishing characteristics of water with the penetrative qualities of gases with no danger to people or the environment.

Application specific HI-FOG systems have been proved to be successful, for example, in protecting machinery spaces, turbine enclosures, offshore platforms and vessels. HI-FOG is the solution of choice especially for applications where superior fire suppression performance, easy installation and minimal water damage are key benefits.

The systems are designed to meet IMO and NFPA 750 specifications.

HI-FOG uses a combination of cooling and oxygen depletion to control, suppress and extinguish fires. By attacking two of the three elements needed for a sustained fire (heat, oxygen and fuel), HI-FOG is efficient for any shipboard application.


Accommodation, public spaces and service areas

In accommodation areas, public spaces and service areas, mist sprinklers with heat sensitive bulbs are normally used. When the bulb breaks, the HI-FOG pump unit will automatically start, discharging water mist through the activated sprinklers. The HI-FOG sprinkler systems use fast-action bulbs, and the system will therefore quickly react to a fire.

Machinery spaces

In machinery spaces, a dry pipe deluge type system is used. The activation is automatic or manual, depending on the application and corresponding regulatory requirements. As HI-FOG is harmless to human beings, activation by mistake or "just in case" will not cause any harm.

The HI-FOG total flooding systems are fully approved to be used in place of systems such as CO2 or foam, and offer the added benefit of immediate activation and post-fire cooling.

The HI-FOG local application systems have been designed and approved in accordance with the regulations for such systems, but have repeatedly shown that they can extinguish engine room fires on their own, without the activation of the total flooding system.