NFPA 10 Fire Extinguisher Exam Flashcards

Questions and Answers

What does ANSI stand for?

American National Standards Institute

What is Carbon Dioxide used for in firefighting?

It is a suitable medium for extinguishing Class B and Class C fires.

What are the two types of chemical extinguishing agents?

Gas

Wet (correct)

Foam

Dry (correct)

What characterizes a Wet Chemical fire extinguisher?

It is normally an aqueous solution of organic or inorganic salts that forms an extinguishing agent. Signup and view all the answers

What is a Dry Chemical fire extinguisher composed of?

It is composed of very small particles, usually sodium bicarbonate, potassium bicarbonate, or ammonium phosphate based. Signup and view all the answers

What is a High Pressure Cylinder in fire extinguisher context?

Cylinders containing nitrogen, compressed air, carbon dioxide, or other gases at a pressure higher than 500 psi at 70 degrees. Signup and view all the answers

What is Dry Powder used for?

To extinguish Class D combustible metal fires. Signup and view all the answers

What does Extinguisher Inspection entail?

A quick check that a fire extinguisher is in its designated place and operational. Signup and view all the answers

Which of the following are types of film-forming foam agents?

Film Forming Fluoroprotein Foam (FFFP) Signup and view all the answers

What are Appreciable depths in fire safety terminology?

Depth greater than a quarter inch. Signup and view all the answers

What types of agents are Halocarbons?

Hydrochlorofluorocarbon (HCFC), hydrofluorocarbon (HFC), perfluorocarbon (PFC), and fluoroiodocarbon (FIC). Signup and view all the answers

Which of the following are considered Halons?

Bromotrifluoroethane (Halon 1301) Signup and view all the answers

What is described by the term Mild Steel Shell?

All steel shells other than stainless steel and high pressure cylinders. Signup and view all the answers

What does servicing a fire extinguisher involve?

Performing maintenance, recharging, or hydrostatic testing. Signup and view all the answers

What is the definition of Travel Distance regarding fire extinguishers?

The actual walking distance from any point to the nearest fire extinguisher. Signup and view all the answers

What is a Self-expelling fire extinguisher?

A fire extinguisher in which the agents have sufficient vapor pressure to expel themselves. Signup and view all the answers

Which of the following are defined as obsolete fire extinguishers?

All of the above Signup and view all the answers

How are occupancy hazards classified?

As light (low), ordinary (moderate), or extra (high) hazards. Signup and view all the answers

What is meant by Light (low) hazard?

Locations where the quantity and combustibility of Class A combustibles and Class B flammables are low. Signup and view all the answers

Study Notes

Fire Extinguisher Terminology

ANSI stands for American National Standards Institute, responsible for developing consensus standards for products and services.
Carbon Dioxide is a colorless, odorless, and electrically non-conductive gas, effective for extinguishing Class B (flammable liquids) and Class C (electrical) fires.
Chemical agents are categorized into wet and dry types for extinguishing different classes of fires.

Chemical Agents and Their Properties

Wet Chemical agents consist of aqueous solutions of organic or inorganic salts, used primarily for fires involving cooking oils and fats.
Dry Chemical agents are fine powders often made of sodium bicarbonate, potassium bicarbonate, or ammonium phosphate, and are enhanced to resist caking and moisture.
Dry Powder agents extinguish Class D (combustible metals) fires through smothering, crusting, or heat transfer methods.

Fire Extinguisher Components and Maintenance

High Pressure Cylinders contain gases at pressures over 500 psi at 70 degrees Fahrenheit, crucial for the operation of certain extinguishers.
Extinguisher Inspection involves checking the position, tampering signs, and physical damage to ensure proper function.
Servicing encompasses maintenance operations like recharging and hydrostatic testing to maintain extinguisher effectiveness.

Types of Foam and Their Applications

Film-forming foam agents include Aqueous Film-Forming Foam (AFFF) and Film Forming Fluoroprotein Foam (FFFP), used for suppressing flammable liquid fires.

Hazard Classifications

Classifying Occupancy Hazard separates spaces into light (low), ordinary (moderate), or extra (high) hazards based on combustible materials present.
Locations designated as Light (low) hazards have minimal Class A combustibles and Class B flammables, typically resulting in low fire heat release rates.

Self-expelling Extinguishers

Self-expelling fire extinguishers can release fire suppressing agents automatically due to their inherent vapor pressure under normal temperatures.

Obsolete Fire Extinguishers

Obsolete types include soda acid, chemical foam, and pre-1971 stored pressure water extinguishers. They often involve outdated materials or technology, making them less effective or safe.

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Description

Test your knowledge of portable fire extinguishers with these flashcards based on NFPA 10. Learn essential terms and their definitions, including chemical types and specific extinguishing agents. Perfect for anyone studying fire safety and hazard prevention.