What is a HI-FOG system?
marine. The water-mist fire-fighting system developed by Finnish company Marioff. The HI-FOG system is based on the removal of harmful smoke and gases produced by a fire, and uses specially-developed sprinkler and spray heads.
How does a HI-FOG system work?
HI-FOG® performance is based on fast evaporation of water that cools down the flame and surrounding gases as well as locally displaces oxygen. The very small droplets as such effectively block radiant heat. The HI-FOG® micro-droplets, represent water in its most effective fire fighting form.
What is hyper mist system in ship?
The hyper mist or high pressure fog fire fighting system is installed for all important ship’s machinery systems in the engine room (ME. AE, Purifier, Boiler etc.). The high-pressure water mist/fog system provides water mist protection during emergencies to engine room areas and machinery spaces.
What is the capacity of high fog system?
The Hyper Mist Fire Extinguishing System jets out uniform microfog out of nozzles of special specifications under a pressure as high as about 4 to 10 MPa (about 40 to 100 kgf/cm2). The water particle diameter is about 50 to 200 μm.
What is water fog?
Definition of water fog : a fine spray or fog formed by sending one high-pressure stream of water against another in the tip of a nozzle and used especially for checking combustion by its immediate transformation into steam.
What is a water mist system?
A water mist system is a fire protection system which uses very fine water sprays (i.e. water mist). The small water droplets allow the water mist to control, suppress or extinguish fires by: cooling both the flame and surrounding gases by evaporation.
What is CO2 system?
A fixed installation designed to displace the oxygen in the protected space and thus extinguish the fire, usually used to fight fires in engine rooms, boiler rooms, pump rooms and holds. The system normally consists of a series of large CO2 cylinders.
What is high expansion foam?
High expansion (HI-EX) foam agents, also called detergent foams or multipurpose synthetic foams, are typically based upon fatty alcohols, alkyl sulphates and butyl carbitol. As the name suggests they expand at high ratios to quickly form voluminous foam for specific applications in extinguishing and vapour suppression.
Why is there high expansion foam in engine room?
High Expansion is mostly used on dry product fires or enclosed areas to drawn large volume surfaces and fill cavities such as warehouse, cellars, aircraft hangar or engine/pump rooms aboard ships. Less water used produces a very large amount of foam in a short time, resulting in fire extinguishment by smothering.
Why does fog occur?
Fog forms when the difference between air temperature and dew point is less than 2.5 °C (4.5 °F). Fog begins to form when water vapor condenses into tiny water droplets that are suspended in the air. This occurs from either added moisture in the air, or falling ambient air temperature.
What are the two main types of mist systems?
There are many types of mist systems available, including traditional in-line, upright mist nozzles; inverted mist nozzles with leak prevention devices; irrigation booms with mist heads; and water- or air-driven fogging nozzles. Mist systems can be operated manually or automatically.
How many ships are equipped with Hi fog?
Indeed, HI-FOG ® is so highly regarded in the marine industry that more than 2000 vessels, ranging from private yachts to vast cargo and cruise ships, are now equipped with Marioff’s trusted system. The simple nature of HI-FOG ® – one panel controls the entire ship’s system – allows it to be used effectively and safely on such a substantial scale.
What is the HI FOG system based on?
The HI-FOG system is based on the removal of harmful smoke and gases produced by a fire, and uses specially-developed sprinkler and spray heads.
What can HI FOG water mist system be used for?
The HI-FOG® Water Mist Fire Protection System can be used in place of deluge, gas, foam, dry chemical, traditional sprinkler and any other type of fixed fire protection system. It is efficient against most types of fires. HI-FOG® controls, suppresses and extinguishes fires by discharging a fine water mist at high velocity.
What kind of fire protection can you use with Hi fog?
The HI-FOG® Water Mist Fire Protection System can be used in place of deluge, gas, foam, dry chemical, traditional sprinkler and any other type of fixed fire protection system. It is efficient against most types of fires.