What is a disadvantage of multi class dry chemical fire extinguishers?

What is the disadvantage of a multi class dry chemical fire extinguisher?

Thoughtless use may lead to the powder causing more damage than the fire itself, using dry powder fire extinguishers in kitchens or offices as powder can contaminate food and inhibit the use of electrical components such as keyboards if discharged.

What are the benefits of multi class dry chemical fire extinguishers?

The most widely used type of fire extinguisher is the multipurpose dry chemical that is effective on Class A, B, and C fires. This agent also works by creating a barrier between the oxygen element and the fuel element on Class A fires. Ordinary dry chemical is for Class B and C fires only.

What is the primary drawback of dry chemical fire extinguishers?

What are the advantages and disadvantages of ABC, dry chemical fire extinguishers? The multi-purpose chemical, monoammonium phosphate, is corrosive and damages computers and electronic equipment. The corrosive action may be slow and not evident for several months.

What is one disadvantage of a fire extinguisher?

Disadvantages: limited to class A fires only. leaves a small amount of residue after the fire has been extinguished. water is an electrical conductor, making the extinguisher unsuitable if the class of fire has an electrical supply, or for use near live electrical equipment.

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What kind of fires is ABC extinguisher not good for?

What kinds of fires is a B:C extinguisher not good for? Wood, paper and cloth.

Why is CO2 better than dry chemical for fighting a Class C fire?

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 are the 3 methods of extinguishing a fire?

All fires can be extinguished by cooling, smothering, starving or by interrupting the combustion process to extinguish the fire. One of the most common methods of extinguishing a fire is by cooling with water.

How do I know if my fire extinguisher is still good?

Rubin recommends checking the pressure gauge monthly. “If the needle is in the green area, it’s functional,” he says. If it falls anywhere else, the extinguisher is unreliable and should be serviced or replaced. For an older model without a gauge, have it checked by a pro.

When should you not use a CO2 fire extinguisher?

Dangers: CO2 extinguishers should not be used on fires involving solid materials, such as paper, wood and fabric, and also are not suitable for use on flammable gases. How it works: The CO2 works by cutting off the fire’s oxygen supply. This then smothers it and, as it does so, extinguishes the flames.

Tame a raging fire