Marioff - High Pressure Water Mist Fire Protection Systems

HI-FOG is a water mist fire protection technology which is fast, efficient, and totally safe for people and the environment. Developed by Marioff, a Finnish company with a background in marine and offshore high pressure hydraulics, HI-FOG makes use of the attributes of the only truly environmentally benign agent – water. HI-FOG has therefore become the first choice for many marine and land-based applications around the world.

HI-FOG is particularly suitable for use in urban railway and metro applications where the special risks and evacuation difficulties require a fire protection system that is reliable and provides few clean-up problems. Unlike conventional low pressure water spray or sprinkler systems, HI-FOG can be easily retrofitted in existing stations with minimal design and civil engineering costs. And systems are easily tested and require little maintenance.

• Superior Fire Suppression - More than 4000 full scale fire tests have proved the superior fire extinguishing and efficient cooling of HI-FOG - but with very small amounts of water
• Smoke Absorption Capability - Smoke is often more dangerous than the fire itself - HI-FOG scrubs and absorbs dangerous smoke particles providing superior protection to low pressure water spray systems
• Minimal Water Damage - Low flow and stainless steel tubing mean minimal water damage and clean-up in case of accidental discharge or fire
• Cost-effective Installation - Because of smaller pipe sizes 12-38mm (1/2-1.1/2") and wide nozzle spacing, installation and commissioning time for HI-FOG systems is considerably less than low pressure water systems - design and civil costs are also substantially less
• Easy Testing - Because HI-FOG uses only small amounts of water, system operation is easily checked and can be carried out as part of a regular testing and maintenance programme

HI-FOG INSTALLATIONS

Recent installations include over 300 HI-FOG self-contained systems for London Underground protecting a variety of risks. HI-FOG systems are being retrofitted in over 30 stations of the Madrid Metro, protecting a variety of risks including:

• Escalators (some over 20 years old)
• Shops, kiosks and store rooms
• Ticket offices / central control rooms
• Pump rooms
• Garbage rooms

HI-FOG SPRINKLER SYSTEMS

The HI-FOG Sprinkler System is an alternative to conventional sprinkler systems. It comprises a number of HI-FOG sprinklers connected by fresh water filled stainless steel small bore tubing to a pump unit via section valves. The pump unit is normally electrically driven, but alternatively a diesel-driven pump unit or Marioff’s innovative and economical GPU (gas pump unit) can be supplied.

HI-FOG MACHINERY SPACE SYSTEMS

The HI-FOG Machinery Space System replaces a gaseous fire extinguishing system and is approved by Factory Mutual and all major Marine Authorities and Classification Societies. The system utilises stand-alone MAU accumulator units or the HI-FOG sprinkler pump unit and is activated automatically or manually in sections, so the pipework from the section valve is dry.

HI-FOG LOCAL APPLICATION SYSTEMS

Marioff has approved HI-FOG Local Application systems which can be fitted in addition to a gaseous total flooding system. The systems can be fitted over any high risk or high value equipment.