Definition

ULTRAFOG^® is a Class 1 high pressure water mist system as defined by the National Fire Protection Association (NFPA 750) and draft European (CEN) standards. The systems operate between approximately 60 and 200 bar with droplet sizes ranging between 10 and 200 microns.

Performance

The use of high pressures and a range of specially developed discharge heads mean an ULTRAFOG^® system will generate a range of droplet sizes that ensure effective fire fighting. The efficiency of an ULTRAFOG^® system is such that it will use less than 10% of the water discharged by a comparable conventional sprinkler system.

ULTRAFOG^® systems and components are tested by the Swedish Test Laboratory (SP) that is fully authorised by the International Marine Organisation (IMO) and accepted by NFPA. The systems are tested and approved to the requirements of IMO Res. A.800 for accommodation spaces, stores and service spaces, IMO Msc/Circ. 668+728 and IMO Msc/Circ. 913 for machinery spaces and pump rooms. Component testing is also undertaken by Underwriters Laboratories.

Intelligent Options

ULTRAFOG^® systems can be configured in several ways:

Open (Deluge)

A water fog system using open discharge heads attached to a pipe network that is connected via a valve to a pressurised water supply. The valve is controlled mechanically or by means of a detection system. When the valve is opened, water flows into the pipe network and is discharged through all the heads attached to that network.

Wet Pipe

A water fog system using automatic (frangible bulb) discharge heads attached to a pipe network containing water and connected to a pressurised water supply. The water will discharge immediately from any head opened by the heat of a fire.

Dry Pipe

A water fog system with its pipe network filled with compressed air. When a discharge head is opened by the heat of a fire the drop in pressure causes a dry pipe valve to open. Water under pressure then enters the pipe network and discharges through any opened heads.

Pre-Action

A water fog system as described above but with a supplemental smoke or flame detection system covering the same area. Actuation of the detection system will also open the dry pipe valve and allow water to fill the pipe network. If heat then opens one or more automatic heads, water will be discharged immediately.