A Fire Alarm System has a control panel (FACP) & number of devices, The panel receives information from devices working together to detect & report fires, Warn people through visual and audio appliances when smoke, fire or carbon monoxide are present. These alarms may be activated automatically from smoke detectors, and heat detectors or may also be activated via manual fire alarm activation devices such as manual call points or pull stations. Alarms can be either wall mountable sounders, horns or bells. Fire alarm sounders can be set to certain frequencies and different tones including low, medium and high, depending on the country and manufacturer of the device.
In crisis situations, people are often lost and act irrationally. In such situations, people need more effective, safer and quicker evacuation of a building & warn people inside the building not to use the elevators. Voice evacuation systems allow for a controlled evacuation as people may be given clear and concise directions of where to evacuate. Intelligent fire alarm systems combined with a voice evacuation system helps to improve survivability in the event of a fire.
An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. Emergency lights are standard in new commercial and high occupancy residential buildings, such as Malls, Apartments, Building, Hotels & Industries.
By the nature of the device, an emergency light is designed to come on when the power goes out. Every model, therefore, requires some sort of a battery that could provide electricity to the lights during a blackout. These device light an area during a blackout and perhaps provide enough light to solve the power problem or evacuate the building.
VESDA, Very Early Smoke Detection Apparatus is a laser based smoke detection system. It is even known as Aspirating smoke detection, or Air Sampling system. The detector sucks air from the protected environment through the purpose built pipes and samples the quality of air passing through the system detection chamber. This system can be installed anywhere that a conventional smoke detector system can, but with greater flexibility. Where conventional systems have to be strategically placed to provide maximum protection. Additional benefits of using this system over conventional detectors are greater reliability and efficiency with features which include entire airflow analysis and ignition point targeting, with the ability to work alongside existing smoke detection and air conditioning systems symbiotically.
Installations are in the widest variety of environments, these including ceiling voids, cold rooms, computer rooms, and warehousing.
Risers dry or wet are pipe work systems specifically for delivering large volumes of water to all floors of a building for fire protection purposes.
A dry riser is a system of empty pipe work installed within buildings. It comprises a two way breeching inlet at ground level and a series of water outlets at appropriate locations throughout a building. The two way breeching inlet enables connection to a fire appliance via a hose for the supply of water feeds landing valves located throughout the storey’s of a building as required.
A wet riser system is a system of pipe work which is fully and permanently charged with its own dedicated water supply. This water supply would typically be situated in the basement of a building and would comprise water storage tanks normally feeding two wet riser pumps. These pumps can generate a high pressure supply of water and as such wet riser pipe work can extend to a much greater height than that of a dry riser system. As with dry riser systems, wet riser systems enable fire fighters to access a plentiful supply of water and tackle a fire effectively.
Fire pump is a part of a fire fighting system, powered by electric or diesel Supply. It is connected to water sources. The pump provides water flow at a higher pressure to the sprinkler system risers and hose standpipes. The fire pump starts when the pressure in the fire hose reel or sprinkler system drops below a threshold. The sprinkler system pressure drops significantly when one or more fire sprinklers are exposed to heat above their design temperature, and opens, releasing water. Alternately, If fire hoses reels or other firefighting connections are opened, causing a pressure drop in the fire fighting main. Types of pumps used are: Horizontal Split Case, End Section & Vertical Turbine.
Fire Sprinkler System is a simple but a key, active component of domestic or commercial building’s fire protection system. A sprinkler system consists of pipes along a ceiling that contain water under pressure, with an additional source of water for a constant flow. Attached to the pipes, automatic sprinklers are placed at select locations. Sprinkler heads are installed in ceilings or side wall, the sprinkler discharges water automatically when a fire is detected Only sprinkler nearest the fire activates and controls or extinguishes the fire. Sprinklers are so effective because they react so quickly. They reduce the risk of death or injury from a fire because they dramatically reduce heat, flames, and smoke.
A pre-action fire sprinkler system is a type of sprinkler that requires a two-step process in order to discharge. These systems work well in areas where accidental discharge needs to be prevented. Pre-action fire sprinklers are a dry sprinkler system; water is not contained in the pipes but is held back by a pre-action valve. Pre-action valves are electrically operated valve that is activated by detection devices.
When a fire is detected the pre-action valve opens, allowing water to flow into the sprinkler pipes and only once the individual Sprinkler Head breaks it permits water to flow onto the fire. Pre action systems are designed to protect water-sensitive areas such as Data Centers, Freezer Warehouses, Libraries, Museums, Telecommunications Centers, Control Rooms, Computer Rooms, Store Room
A Fire Suppression system is a system used to suppress and / or extinguish a fire within a building. Suppression systems provide cooling, control the fire.
These suppressing agents include HFC227, CO2, Chemical, or Inert gases. These agents have unique properties that are ideal for protecting sensitive equipment and contents within a building even while suppressing a fire.
Firefighting foam “Aqueous Film-Forming Foam Concentrates (AFFF)’’ is used for fire suppression. Its role is to cool the fire and to coat the fuel, preventing its contact with oxygen, resulting in suppression of the combustion.
AFFF foam solutions utilize three suppression mechanisms:
The foam blanket blocks oxygen supply to the fuel.
Liquid drains from the foam blanket and forms an aqueous film that suppresses fuel vapor and seals the fuel surface.
The water content of the foam solution produces a cooling effect for additional fire suppression.
Condensed aerosol fire suppression is a Micro particle-based form of fire extinction. It is similar to gaseous fire suppression (or dry chemical fire extinction). It employs a fire-extinguishing agent consisting of: very fine solid particles as well as gaseous matter. The micro particles and effluent gases are generated by the exothermic reaction; the particles remain in vapor state until the process of being discharged from the device. Then, it is condensed and cooled within the device and discharged as solid particles.
Condensed aerosols are flooding agents. They are effective regardless of the location and height of the fire. This can be contrasted with dry chemical systems, which must be directly aimed at the flame. Aerosol fire suppression systems can be effective in suppressing Class A, B, and C fires. However, effectiveness depends on the concentration of particulates near the flame, location of other flammable materials, and type of fuel involved.
A water mist system uses very fine water sprays particles (i.e. water mist). The small water droplets allow the water mist to control, suppress or extinguish fires by:
Advantages over gaseous agents and traditional sprinkler systems: