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Week 7

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17 views18 pages

Week 7

Uploaded by

jujupascua
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Fire

ExtinguishmentE
FIRE EXTINGUISHER

A fire extinguisher is a handheld active fire protection


device usually filled with a dry or wet chemical used to
extinguish or control small fires, often in emergencies.
Classifications of Fire
Extinguisher
Class A
It is used for ordinary combustibles, such
as wood, paper, some plastics, and
textiles. This class of fire requires the
heat-absorbing effects of water or the
coating effects of certain dry chemicals.
Extinguishers that are suitable for Class A
Class B
The Class B Fire Extinguisher is used
for flammable liquid and gas fires
such as oil, gasoline, etc. These fire
extinguishers deprive the fire of
oxygen and interrupt the fire chain by
inhibiting the release of combustible
vapors.
Class C
It is used on fires that involve live
electrical equipment, which require the
use of electrically non-conductive
extinguishing agents. (Once the
electrical equipment is de-energized,
extinguishers for Class A or B fires may
be used.)
Class D
It is used on combustible metals,
such as magnesium, titanium,
sodium, etc., which require an
extinguishing medium that does not
react with the burning metal.
Class K
It is used on fires involving cooking
media (fats, grease, and oils) in
commercial cooking sites such as
restaurants.
Safety Tips
• Use a portable fire extinguisher when the fire
is confined to a small area, such as a
wastebasket, and is not growing; everyone has
exited the building; the fire department has
been called or is being called; and the room is
not filled with smoke.
Safety Tips
• To operate a fire extinguisher, remember the word PASS:

PULL the pin. Hold the extinguisher with the nozzle pointing
away from you, and release the locking mechanism.
AIM low. Point the extinguisher at the base of the fire.
SQUEEZE the lever slowly and evenly.
SWEEP the nozzle from side-to-side.
Safety Tips
Safety Tips
• For the home, select a multi-purpose
extinguisher (can be used on all types of home
fires) that is large enough to put out a small
fire, but not so heavy as to be difficult to
handle.
Safety Tips
• Read the instructions that come with the fire
extinguisher and become familiar with its parts
and operation before a fire breaks out. Local
fire departments or fire equipment distributors
often offer hands-on fire extinguisher training.
Safety Tips
• Install fire extinguishers close to an exit and
keep your back to a clear exit when you use the
device so you can make an easy escape if the
fire cannot be controlled. If the room fills with
smoke, leave immediately.
Safety Tips
• Know when to go. Fire extinguishers are one
element of a fire response plan, but the
primary element is safe escape. Every
household should have a home fire escape plan
and working smoke alarms.

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