How does purple K fire extinguisher work?

Dry chemical works by directly inhibiting the chemical chain reaction which forms one of the four sides of the fire tetrahedron (heat + oxygen + fuel + chemical chain reaction = fire). To a much smaller degree it also has a smothering effect by excluding oxygen from the fire.

What is a Purple-K extinguisher used for?

PURPLE K is a high performance extinguishing agent most effective for dealing with flammable liquid fires. Suitable for use on Class B and Class C fires.

How do K fire extinguishers work?

Saponification takes place when alkaline mixtures such as potassium acetate, potassium citrate, or potassium carbonate are applied to burning cooking oil of fat. The alkaline mixture combined with the fatty acid creates a soapy foam layer on the surface which holds in the vapors and steam and extinguisher the fire.

What chemicals are in Purple-K fire extinguisher?

Product Specifications. PURPLE K fire extinguishers contain specially fluidized and siliconized potassium bicarbonate dry chemical which is particularly effective on Class B flammable liquids and pressurized gases.

How does potassium bicarbonate put out fire?

Potassium bicarbonate is also used in certain types of fire extinguishers. When such an extinguisher is used, the potassium bicarbonate reacts with an acid present in the device to produce carbon dioxide. The carbon dioxide propels a liquid from the extinguisher and, itself, helps put out a fire.

How To Use A Purple K Fire Extinguisher

Is Purple-K corrosive?

Purple-K is normally non-toxic, but ingestion of large amount can cause alkalosis. In high temperatures it decomposes to carbon dioxide and potassium oxide, which is toxic and highly corrosive.

What is the Purple-K unit FDNY?

Purple-K, also known as PKP, is a dry-chemical fire suppression agent used in some dry chemical fire extinguishers.

What type of fire is purple K for?

Purple-K dry chemical agent may be used to combat fires in flammable liquids, gases, and greases (Class B) including such fires when involved with energized electrical equipment (Class C).

Is Purple K hazardous?

This product is classified as not hazardous in accordance with the Globally Harmonized System of Classification and Labelling (GHS).

Is Purple K the same as Class K?

Purple K Extinguishers

The purple K fire extinguishers use a dry chemical component to combat class B and C fires. Although the name suggests the use of potassium or that it combats class K fires, it is actually not effective against those fires.

What is K fire extinguisher?

Class K fire extinguishers offer improved fire control for cooking fires by: Minimizing the splash hazard. Forming a soapy foam on the surface of the hot cooking oil, holding in the vapors and steam, and smothering the fire. (A process known as saponification.)

What is class K in fire?

Class K fires involve vegetable oils, animal oils, or fats in cooking appliances. Extinguishers with a K rating are designed to extinguish fires involving vegetable oils, animal oils, or fats utilized in commercial cooking appliances.

What does a Class K fire mean?

Class K fires are fires with substances such as the animal and vegetable fats present in commercial cooking oils and greases. These types of fires can only be effectively quenched with a Class K fire extinguisher.

Which is known as Purple K Dry chemical?

Purple K Fire extinguishers contain a dry chemical, known as Potassium Bicarbonate, which is effective in extinguishing Class B and Class C fires.

What puts out a potassium fire?

Fire: Use Class D extinguisher such as Met-L-X or smother the fire with dry sand. Do not use water, carbon dioxide or halogenated extinguishing agents.

Is potassium flammable?

* Potassium is a FLAMMABLE and REACTIVE chemical and a FIRE and EXPLOSION HAZARD.

What is halon made of?

A halon may be any of a group of organohalogen compounds containing bromine and fluorine and one or two carbons. The effectiveness of halons in extinguishing fires arises from their action in interrupting chain reactions that propagate the combustion process.

What is Monnex powder?

Monnex^TM BCE powder is the world's most trusted high performance dry chemical powder for high risk firefighting applications. Monnex^TM is used in high risk situations where flammable liquids are stored, processed or transported.

How many FDNY units are there?

There are currently six different types of fire companies in the New York Fire Department, which all operate distinct types of apparatus: 197 engine companies, 143 ladder (or truck) companies, 5 rescue companies, 8 squad companies, 3 marine (or fireboat) companies, and the hazardous materials (hazmat) company.

How do you extinguish a magnesium fire?

Use approved Class D extinguishers or smother with dry sand, dry clay, or dry ground limestone and dry graphite. DO NOT use carbon dioxide or halogenated extinguishing agents. DO NOT use water or foam. Fire Protection Guide to Hazardous Materials.

What is in a halotron fire extinguisher?

Halotron I is a fire extinguishing agent based on the raw material HCFC-123 (93%) mixed with tetrafluoromethane and argon as propellants.

How does monoammonium phosphate extinguish fire?

A dry chemical extinguisher sprays a very fine powder of sodium bicarbonate (NaHCO3, baking soda), potassium bicarbonate (KHCO3, nearly identical to baking soda), or monoammonium phosphate ((NH4)H2PO4). These solids coat the fuel and smother the fire.

How do you clean up monoammonium phosphate?

To neutralize monoammonium phosphate based dry chemical, spray or wash the area with a solution of hot water and baking soda (one cup of baking soda to three gallons of water.) Let stand for a few minutes; then rinse with warm water. Wash the area with a mild soap and water solution; then rinse.

What color is a Class K fire extinguisher?

Class K fire extinguishers are for fires that involve cooking oils, trans-fats, or fats in cooking appliances and are typically found in restaurant and cafeteria kitchens. The geometric symbol indicating Class K is a black hexagon.

Where are Type K fire extinguishers required?

1 requires class K fire extinguishers be provided for hazards where there is a potential for fires involving combustible cooking media (vegetable or animal oils and fats). Based on these two requirements, there is confusion with regard to requiring class K extinguishers for stove top cooking.