A fire suppression system includes a broad range of products and equipment including sprinkler systems, gas suppression systems as well as hydrant and hose reel systems.

The starting point for choosing the right system for your requirements begins with a risk analysis of your building or facility. Stevnor Services can design, install, service and maintain the full range of suppression systems, including:

  • Sprinkler systems
  • Water mist systems
  • Foam systems
  • Gaseous suppression systems
  • Hydrant and hose reel systems

Fire Sprinkler Systems

The four main types of sprinkler systems are:

Wet systems: The most common typically found in office buildings, retail establishments and climate controlled warehouses. The water is constantly maintained in the sprinkler piping.

Dry systems: Designed for environments where the ambient temperature may be cold enough to freeze the water in the sprinkler piping, such as unheated buildings, parking garages and loading docks. Water is not present in the piping until the system is activated.

Pre-action systems: Typically used in areas where accidental activation is unacceptable due to the high value and irreplaceable nature of the equipment or content being protected, e.g. museums, data centres and libraries. A pre-action system is a combination of a wet, dry & deluge systems. It uses a double interlock system that requires the concurrent activation of a fire detector and also a sprinkler in order for water to be dispersed. When dormant the piping is filled with air similar to a dry system. The activation of a fire detector will open the pre-action valve allowing water to flow into the piping, effectively turning it into a wet system. The activation of a closed sprinkler will then allow the water to be dispersed simultaneously through all sprinklers over the protected area similar to a deluge system. Without the concurrent activation of both the detector and the sprinkler, water will not be applied to the protected area.

Deluge systems: Commonly used in special hazard areas where rapid fire spread is a concern such as outdoor transformers and fuel loading racks. The system utilises open sprinkler heads that allows all the sprinklers in the system to discharge water simultaneously over the entire hazard once a detection device has been activated.

Gas Suppression Systems

Gas suppression systems are commonly employed in areas that are highly volatile, critical or contain sensitive equipment where non-fire damage from water is as detrimental to the equipment or materials as a fire.

Gas suppression systems can be used in:

  • Computer server rooms
  • Data processing & data storage centres
  • Hospitals & medical centres
  • Financial institutions
  • Switch rooms
  • Power generation plans
  • Critical electronic infrastructure
  • Gas turbine enclosures
  • Diesel generator enclosures
  • Lube oil tanks
  • LPG storage tanks
  • Process pumps
  • Flammable liquid storage
  • Transformers
  • Substations

The main types of gas suppression systems include:

Clean Agent Suppression Systems (FM200, NOVEC 1230, Argonite, Proinert): Engineered to suppress fires and to protect assets without causing harm to people or the environment. They are safe to breathe and once discharged, extinguishes the fire rapidly leaving little to no residue resulting in reduced business downtime.

Carbon Dioxide (CO2) Suppression Systems: Extinguishes a fire by removing the oxygen from the protected area. While they are environmentally safe and leave no residue, they are not recommended for normally occupied areas because of the asphyxiating effect on people. CO2 systems are extremely effective for many industrial hazards including chemical storage areas, electric generating plants, transformer rooms, turbines, food manufacturing processes and semi-conductor wet benches.

Hydrants & Hose Reels: Fire hydrant and hose reel systems include installation of pipes, water tanks, pumps, hydrant outlets and/or hose reels in a building to provide a ready means by which a flow of water can be delivered in any part of the building for the purpose of firefighting. Due to the variety of fire suppression systems, it is important to ensure that you choose the right one for you building or facility requirements. Stevnor Services is experienced in designing and installing a system to your needs and also integrating the system with the other components of your building’s fire safety and protection programme. We can also provide regular inspection and testing as well as remedial repair work across a wide range of suppression systems to correct deficiencies in your suppression system, while maintaining it at an optimal level of operation and as per the Australian Standards.