Halons
are fire quenching agents which are vaporous when released in the aircraft
environment. Halons have, as of not long ago, been in verging on widespread use
in aircraft fire extinguisher halon, both fixed and
portable. They exist in two structures - as Halon 1211,
BromoChlorodiFluoromethane (CBrClF2) otherwise called 'BCF', and as Halon 1301,
Bromotrifluoromethane (CBrF3). At the time of installation fire extinguisher halon
1301 is utilized.
The
adequacy of halons in dousing flames emerges from their activity in intruding
on chain responses that engender the burning procedure. Halons are
nonconductors of power and can be utilized as a part of battling flames in
combustible fluids and most strong flammable materials, incorporating those in
electrical hardware; they are inadequate on fills containing their own
oxidizing specialists or very receptive metals, for example, sodium or
potassium. Halon 1301 (bromotrifluoromethane) is
particularly supported for extinguishing fires quenching flames including
electronic equipments on the grounds that it leaves no deposit and does not
bring about electrical short circuits or harming erosion of the component.
Halons
are electrically non-leading and have been recognized as the best widespread
extinguishing agent for the aircraft purpose. They work principally by
chemically interrupting as the 'Fire Triangle'(Fuel-Oxygen-Heat)
which must be supported for a fire to proceed. They don't deliver residues and
in this way don't bring about optional harm. In any case, the fumes are
poisonous if breathed in and precaution needs to be taken when they are
utilized.
Every
airplane created in the most recent thirty years has utilized Halon 1301 for
motor flame assurance and in numerous cases payload and dry straight security
also. For all intents and purposes US Organizations including the Military, FAA
and PA have acknowledged the fire extinguisher halon
1301as essential use.
Fire
needs three components to flourish: fuel, oxygen and warmth. The most widely
recognized smothering operators like water, carbon dioxide, dry synthetic and
froths assault the flame physically to deny the flame of one or a greater
amount of the three discriminating components required for proliferation. Fire extinguisher halon
varies in the way it puts out the flame. It offers some of water's cooling
impact and some of carbon dioxide's covering activity; however its crucial
dousing method lies in its ability to artificially respond with the fire's
segments. fire extinguisher halon really intrudes
on the chain response of flame.
Water
is extremely powerful on class a flames (normal combustibles like wood and
paper). Halon is viable on basic combustibles but rather Halon is additionally
viable on class B (combustible fluids), and it doesn't lead power back to the
quencher administrator (class C).
Halon
is like CO2 in that it is suitable for utilization in chilly climate and leaves
no deposit. Dissimilar to CO2, be that as it may, fire extinguisher halon
does not dislodge the let some circulation into of the zone where it is
apportioned. Additionally, dissimilar to CO2, there is no threat of "cool
stunning" flying or other delicate electrical gear. Hence with such
advantages of fire extinguisher halon one can sale
his/her old Halon to a company who re-use it in aircraft safety products.
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