Halon (short for halogenated hydrocarbon) is a liquefied gas that is used to extinguish fire by chemically interrupting the combustion chain reaction. It is nonconducting and described as a “clean agent,” as it leaves no residue after being discharged.
How much does a Halon system cost?
The estimated net cost for the Halon 1301 system ranges from $-338.7M to $-462.7M. The estimated net cost for the HFC-125 system ranges from $-326.8M to $ 450.9M. the aircraft assets it was designed to protect, the benefit (assets saved) would still be greater than the cost of the fire suppression system.
What replaced halon 1301?
SnaP approved substitute extinguishing agents for halon 1211 include the following: carbon dioxide, dry chemical, foam, hydrochlorofluorocarbons (hcFcs), powdered aerosols, and water mist. this course examines water mist extinguishing agent systems that can be used to replace halon 1301 and halon 1211.
Is halon toxic to humans?
Halon 1211 (a liquid streaming agent) and Halon 1301 (a gaseous flooding agent) leave no residue and are remarkably safe for human exposure. … Halon 1211 and Halon 1301 are low-toxicity, chemically stable compounds that, as long as they remain contained in cylinders, are easily recyclable.
Is Halon still used in aircraft?
While the production of Halon ceased on January 1, 1994, under the Clean Air Act, it is still legal to purchase and use recycled Halon and Halon fire extinguishers. In fact, the FAA continues to recommend Halon fire extinguishers for aircraft.
Are Halon systems legal?
It is legal to continue to use your existing halon system and to purchase recycled halon to recharge your system. 2. There are currently no laws prohibiting halon emissions, however, discharge testing is strongly discouraged.
What is the replacement for Halon?
More and more, non-halocarbon substitutes are being considered for replacement of halons. Already, water sprinklers are replacing halon systems in many applications. Dry chemical extinguishants and carbon dioxide are also receiving increased use.
How long does Halon fire extinguisher last?
Halon fire extinguishers require the same six year maintenance and 12 year hydro test that other fire extinguishers require.
What is a disadvantage of halon fire extinguishers OSHA?
Disadvantages: Obscures vision. More irritating than ordinary dry chemical. Nozzle pressure may cause burning liquids to splash.
What are Halon 1301 systems?
They exist in two forms – as Halon 1211, BromoChlorodiFluoromethane (CBrClF2) also known as ‘BCF’, and as Halon 1301, Bromotrifluoromethane (CBrF3). Halon 1301 is used only in fixed extinguisher installations typically cargo holds or engines and is a total flooding agent.