Categorization of Automatic Fire Extinguishing Systems
Due to the increasing expansion, the development of various industries and the complexity of the stages of production and ... the same is the
risk of occurrence of various incidents, especially the fire, which is one of the most important and most dangerous of these events, is increasing,
in contrast Technology and day-to-day safety and safety issues (announcement and firefighting) are also rapidly evolving. In fact, the progress
of various industries, increasing the likelihood of fire (fire) and fire extinguishing technologies are constantly being challenged. Therefore,
the energy co-operating company, based on its experience, knowledge and mission, is continuously researching and developing fire extinguishing
equipment ...
Generally, automatic fire extinguishing systems can be divided into five categories:
i - Automatic automatic fire extinguishing system
ii - Automatic gas fire extinguishing system
iii - Automatic powder fire extinguishing system (Aerosol)
iv - Automatic foam fire extinguishing system
v - Automatic Mud Fire Fighting System (Water Mist)
vi - Vortex automatic fire system
Automatic water Firefighting System
The main parts of this system are:
i - The Tank or water pool
ii - Fire pumps
iii- Control valves such as Deluge Valve, Wet Valve, Dry Valve and so on
iv -Sprinkler or water spray
Usage: This system is used for class A fire suppression and cooling classes B and C. Some of its applications include office buildings, commercial
buildings, hotels, museums, parking lots, power transmissions, tanks and fuel and chemical storage tanks, ships, ports, warehouses
Automatic Gas Firefighting System
The system consists of sub-sets such as FM200, CO2, Inert Gas, Novec 1230 and other gas systems, each of which has the advantages and disadvantages
mentioned in the training section of this site.
Fire extinguishing systems play an important role in the concept of firefighting, especially in cases where other firefighters (such as water systems) can not do this.
In recent years and after Halon's ban since 1994, there have been many efforts to introduce and use other gases.
ISO and NFPA organizations have introduced thirteen types of gases from static sources such as argon and nitrogen and their mixtures, as well as halogenated
hydrocarbons such as NOVEC 1230 or FM200.
Generally, each fire extinguishing system consists of the following parts:
i-Gas cylinders with actuators
ii-Piolot Cylinders
iii-Manifold,Gas discharge hose, cylinder actuator hoses
iv-Electric valves and pressure switch
v-Gas discharge nozzles
Usage: Typically, this type of fire suppression system is used in classes A, B and E. Some of its applications include power boards, control panels, telecommunication boards, computer servers, power motors, UPS rooms, control rooms, Marshaling rooms
Automatic fire extinguishing systems (Aerosol)
Each aerosol cylinder consists of very fine particles of potassium and is stimulated either by thermal or electrical.
After excitation, these particles are removed from the cylinder and mixed with gases (often CO2, N2 or water vapor) to form a combustible substance.
Potassium compounds need the least amount of energy to ionize, and this energy is absorbed by fire. Then, potassium ions are combined with fire ions (O, H, OH),
and the chain reaction of the fire stops without reducing oxygen.
Automatic Foam Firefighting System
This system is the most effective method for class B (liquid fuels) fire suppression. Also available in Class A. The main parts of this system are:
i-Foam Storage Tank ( Bladder Tank)
ii- Water and Foam Mixer (Proportioner)
iii-Nozzle
Usage: Chemical storage, petroleum and chemical reservoirs, aircraft hangars and helicopters, oil facilities
Automatic Firefighting systems, fog or water powders (water mist)
The basis of the Water Mist system, as its name suggests, is based on the production of water dust (such as fog), which acts as a fine-water particle in a protected
environment.The diameter of these particles is between 300 and 1000 microns and causes the electrical conductivity of the water to disappear. In fact, the system,
like the fire extinguishing system, has a cooling effect and, like a fire extinguishing system, prevents oxygen from reaching the fire.
The main parts of this system are:
i -Water cylinders with stimulant valves
ii -High-pressure gas cylinders (nitrogen or air) with driven valves
iii-Manifold,Gas discharge hose, cylinder actuator hoses
iv-Electric valves and pressure switch
v-Nozzles
Automatic Vortex Firefighting System
Vortex Fire Extinguishing System (Vortex) is a hybrid water system with nitrogen. The following table shows the comparison between the fire extinguishing systems:
| Speed Function | Pressure(LPM) | size of each drop of water | Flow of water per Nozzle | System |
| High | 25 | 10 | 7/3 | vortex |
| High | 350 | 400- 1000 | 140 | Medium pressure water powder |
| Low | 1500-2500 | 50- 100 | 30 | High pressure water powder |
| Medium | More than 20 | More than 1000 | More than 95 | Sprinkler |
The application of these systems is in places and for various equipment, for example, turbines, pumps, oil installations, cable channels, power plants, etc.
The above article, based on years of experience, is the knowledge of the engineers of the company, Energy Coalition and Existential Mission The energy co-team,
based on the slogan (the secure city, wants help), is to inform you of your loved ones to the field.
(2).jpg)