Regularly, somebody who needs a flame douser will purchase an ABC fire quencher without really thinking about to the genuine flame perils they have to secure against. When purchasing fire dousers, you have to know a few things about quenchers so as to settle on an educated choice, explicitly, the flame class you have to secure against and unique conditions you have to consider (PC hardware, for instance). bình chữa cháy co2
Classes of flame dousers
With regards to fire dousers, there are five classes of flames: A, B, C, D, and K.
Class A – Fire dousers appraised for Class A flames have a green triangle with “An” in the inside just as a pictogram of a trash can and wood consuming. These dousers are utilized to put out flames for regular combustibles like paper, fabric, elastic, and a few plastics (materials that leave slag when consumed, thus, the “A”).
Class B – Fire quenchers evaluated for Class B flames have a red square with a “B” in the middle just as a pictogram of a fuel can with a consuming puddle. These quenchers are utilized to smother fires for combustible fluids like gas, greasing up oil, diesel fuel, and numerous natural solvents found in research centers (things found in barrels, henceforth “B”).
Class C – Fire dousers evaluated for Class C flames have a blue hover with a “C” in the inside just as a pictogram of an electric fitting with a consuming outlet. These quenchers are utilized to smother electrical flames for empowered electrical gear, electric engines, circuit boards, switches, and instruments (“C” for flow electrical).
Class D – Fire dousers evaluated for Class D flames have a yellow pentagram (star) with a “D” in the middle just as a pictogram of a consuming rigging and bearing. These dousers are utilized to stifle fires from metals and metal composites like titanium, sodium, and magnesium.
Class K – Class K fire dousers are utilized explicitly for cooking fires from oil, fat, and cooking oil (“K” for kitchen).
You can get fire quenchers with a solitary class rating or various flame class appraisals (ABC or BC, for instance).
Fire dousing materials
Fire dousers utilize various materials for stifling flames. When picking your quencher, you have to figure out what kind of flame you might battle and afterward pick the best smothering material for your application.
Water: Water, or APW, dousers use pressurized water to quench fires. APW dousers must be utilized for Class A flames (combustibles, for example, paper, fabric, and so forth.); they can’t be utilized for putting out different classes of flames.
Dry substance: Dry synthetic concoctions are utilized to quench A-, B-, C-, or D-type fires. They work by putting a fine layer of substance dust on the material that is consuming. Dry synthetic dousers are viable at putting out flames. Be that as it may, dry synthetic dousers can be rough and destructive to gadgets and certain different materials.
Carbon dioxide: Carbon dioxide works by expelling oxygen from the quick region of the fire. Carbon dioxide quenchers are just at any point utilized for B (combustible fluid) and C (electrical flames) dousers. For PC, medicinal and logical hardware, and air ship gadgets, carbon dioxide would be a superior decision than dry concoction quenchers in light of the fact that a carbon dioxide douser leaves no buildup.
Metal/sand: Some class D fire quenchers utilize metal or sand, for example, sodium chloride (NaCl) or powdered copper metal, to cover fires from metals and metal amalgams.
Some flame risks require specific dousers. Here are a couple of instances of those applications.
Metal or sand quenchers are utilized to put bulldoze D (metal and metal combination) fires:
Salt (sodium chloride- – NaCl) is the most regularly utilized material in metal/sand quenchers. NaCl dousers function admirably with flames including magnesium, sodium, potassium, compounds of potassium and sodium, uranium, and powdered aluminum.
Sodium carbonate quenchers are additionally utilized on flames including sodium, potassium, and compounds of potassium and sodium. Where stress consumption of treated steel is a thought, this sort of flame quencher would be a superior decision than a NaCl douser.
Powdered copper (Cu) metal is utilized for flames including lithium and lithium compounds.
Graphite powder quenchers are utilized on lithium fires just as flames that include high-liquefying point metals like titanium and zirconium.
Sodium-bicarbonate-put together quenchers are utilized with respect to flames including metal alkyls and pyrophoric fluids.
Halotron I is a perfect operator substitution for Halon 1211, which was prohibited from use because of its ozone draining properties. Halotron I quenchers are utilized for dousing fires in PC rooms, clean rooms, and where media communications gear or gadgets are available. Halotron leaves no buildup and is nonconducting yet is more costly than carbon dioxide. It ought to be noticed that Halotron I will never again be delivered after 2015.
FE-36 (CleanGuard) quenchers are another spotless specialist swap for Halon 1211. FE-36 dousers are less harmful than Halon 1211 and Halotron I and supposedly have no ozone-exhausting potential. FE-36 is likewise utilized for flames in PC rooms, clean rooms, and where media communications hardware or gadgets are available. Dissimilar to Halotron I, FE-36 isn’t gotten ready for eliminate.
Nonmagnetic flame dousers: Wherever solid magnets are being used, for instance, close attractive reverberation imaging (MRI) or atomic attractive reverberation spectrometers (NMRSs), nonmagnetic flame quenchers ought to be picked. The solid attractive fields produced by this kind of hardware can cause steel chamber fire dousers to fly over a stay with savage power.