Portable fire extinguishers are only classified by the type of extinguishing agent used (T/F)
F
Types of portable fire extinguishers are organized by the type of agent and method used to expel contents (T/F).
T
Portable fire extinguisher ratings are classified according to the types of fire for which they are intended (T/F).
T
Most portable fire extinguishers are operated in very different ways (T/F).
F
Maintenance for both fire department and privately owned portable fire extinguishers is based on NFPA� 10.
F
Class B fires are extinguished with:
Carbon Dioxide, Dry Chemical
Class A fires are extinguished with:
Water, Dry Chemical, Class A foam, Water Based Agents
Class C fires are treated as Class A or B after ______________.
power supply is off
Class D fires are extinguished with:
Dry powder chemical
Fires involve combustible metals, alloys are:
D
_____ fires involve combustible cooking oils, vegetable or animal fats.
K
____ fires are controlled by use of wet chemical systems.
K
Agents that work by smothering are effective on materials that contain own oxidizing agent (T/F).
F
Compressed air or inert gas within the container forces the agent out the nozzle at the end of the hose when the operator presses the handle describes a manual pump extinguisher (T/F)
T
Water-Mist Stored-Pressure Extinguishers are safe to use on energized electrical equipment (Class C) - because they use:
De-ionized Water
Aqueous Film Forming Foam (AFFF) extinguishers are intended for _____ fires.
Class B
Dry Powder Extinguishers control and extinguish _____ fires involving combustible metals.
Class D
Class A fire extinguishers ratings are based on:
amount of extinguishing agent, duration and range of discharge.
Class B ratings range from 1-B through 640-B and are:
expected to extinguish 1 square foot (0.09 m2) for each rating
Operating a fire extinguisher close to a fire can scatter lightweight solid fuels or penetrate the surface of liquid fuels (T/F).
T
_____ requires fire extinguisher inspection at least once a year.
NFPA 10
A dry chemical fire extinguisher must be ____ every six years.
refilled