Which chemical is used in fire extinguisher and as a refrigerant?
The Freon chemical compounds that are used in household refrigerators and in air-cooling systems now have a new job. They are found to be effective in extinguishing fires.
Which chemical is used in fire extinguishers How is it harmful?
The dry chemical is potassium bicarbonate or sodium bicarbonate. They are harmful if inhaled.
What chemicals are in a class A fire extinguisher?
Fire extinguishers with a Class A rating are effective against fires involving paper, wood, textiles, and plastics. The primary chemical used to fight these fires is monoammonium phosphate, because of its ability to smother fires in these types of materials.
What liquid is in a fire extinguisher?
CO2s are designed for Class B and C (flammable liquid and electrical) fires only. Carbon Dioxide is a non-flammable gas that extinguishes fire by displacing oxygen, or taking away the oxygen element of the fire triangle.
What type of hazard is fire?
Physical Hazards: Fire. the product can each on fire and burn easily. Therefore, it is very important to avoid sources of ignition such as sparks and open flames when working with them.
What is a common fire hazard?
Arson. Cooking. Smoking materials. Open flame (i.e., candles/incense) Electrical (wiring, appliances and equipment) hazards.
What are examples of fire hazards?
Chemicals, spray painting, welding, combustible dusts, and flammable liquids are examples of special fire hazards.
What is fire hazard and its types?
Common fire hazards Kitchen fires from unattended cooking, grease fires/chip pan fires. Electrical systems that are overloaded, poorly maintained or defective. Combustible storage areas with insufficient protection. Combustibles near equipment that generates heat, flame, or sparks. Candles and other open flames.
What 3 things are needed for fire?
Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.
Do all fires need oxygen?
Oxygen. Air contains about 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn. Oxygen supports the chemical processes that occur during fire. When fuel burns, it reacts with oxygen from the surrounding air, releasing heat and generating combustion products (gases, smoke, embers, etc.).
What combinations can start a fire?
The Fire Triangle. Three things are required in proper combination before ignition and combustion can take place—Heat, Oxygen and Fuel. There must be Fuel to burn. There must be Air to supply oxygen.