INCORPORATING COLD CHAIN
CONTRIBUTORS as a fire suppression agent , which can effectively extinguish a fire while leaving no residue .
• Water mist systems : These systems use fine water droplets to extinguish fires , they are typically used in areas where traditional water-based systems would cause damage , such as in electronic or data centers .
• Foam systems : These systems use foam to extinguish fires , typically used in industrial processes or where flammable liquids are present .
Special hazard fire protection systems have several advantages over traditional water-based systems . They are effective in extinguishing fires in specialised environments , and they are also relatively clean and leave no residue , which makes them ideal for sensitive equipment and environments .
DRY CHEMICAL FIRE SUPPRESSION
Dry chemical fire suppression systems are a type of active fire protection system that use dry chemical powders to extinguish or control fires . They are typically used in environments where flammable liquids such as oil or gasoline , or flammable gases are present and where traditional water-based fire suppression systems would not be effective . Dry chemical fire suppression systems work by releasing a dry chemical powder into the environment , which smothers the fire by cutting off its oxygen supply . The powder also creates a barrier between the fuel and the oxygen , preventing re-ignition . There are several types of dry chemical fire suppression systems , including :
• Regular Dry Chemical : This type of system uses a sodium bicarbonatebased powder that is effective in extinguishing fires in Class B ( flammable liquids and gases ) and Class C ( electrical equipment ) fires .
• Purple-K Dry Chemical : This type of system uses a potassium bicarbonate-based powder that is more effective in extinguishing Class B fires and less effective on Class A ( ordinary combustibles ) fires .
• Monoammonium Phosphate : This type of system uses a monoammonium-based powder that is effective in extinguishing Class A , B and C fires .
Dry chemical fire suppression systems have several advantages over other types of fire suppression systems . They are effective in extinguishing fires in flammable liquids and gases , they are also relatively low in toxicity and can be used in occupied spaces .
GASEOUS FIRE SUPPRESSION SYSTEMS
Gaseous fire suppression systems are a type of fire protection system that uses a gaseous agent , such as carbon dioxide ( CO 2
), argon or nitrogen , to extinguish fires . These systems are typically used in environments where traditional fire suppression methods , such as water or foam , are not feasible or would cause damage .
Gaseous fire suppression systems work by releasing the gaseous agent into the protected area . The agent displaces the oxygen in the space , which is necessary for combustion to occur . Without oxygen , the fire cannot continue to burn .
Gaseous fire suppression systems have several advantages over other types of fire suppression systems . They are clean and leave no residue , which makes them ideal for sensitive equipment and environments . They are also effective in extinguishing fires in the early stages , before they have a chance to spread .
FOAM FIRE SUPPRESSION SYSTEMS
Foam fire suppression systems are a type of active fire protection system that use foam to extinguish or control fires . They are typically used in environments where flammable liquids , such as oil or gasoline , are present and where traditional waterbased fire suppression systems would not be effective .
Foam fire suppression systems work by creating a foam solution that is applied to the surface of the burning liquid , which smothers the fire by cutting off its oxygen supply . The foam also cools the liquid and the surrounding area , reducing the risk of re-ignition .
Foam fire suppression systems have several advantages over other types of fire suppression systems . They are effective in extinguishing fires in flammable liquid , they are also relatively low in toxicity and biodegradable , which makes them a good choice for sensitive environments . CLA
Image by WangXiNa on Freepik
Special hazard fire protection systems are a type of active fire protection system that is specifically designed to protect unique or specialised environments .
COLD LINK AFRICA • November 2023 www . coldlinkafrica . co . za 29