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Le Bureau de la gestion du risque,
1 Rue Nicholas,
Pièce 840
Ottawa (Ontario)
CANADA K1N 7B7

Tél: (613) 562-5892
Téléc: (613) 789-5711
Courriel: safety@uottawa.ca

 

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Extincteurs

Ce texte est à la traduction

ABCD ?

  • Feu Classe A ?
    A fire involving ordinary combustibles such as wood, cloth, paper, rubber and some plastics.
  • Feu Classe B ?
    A fire involving ordinary flammable or combustible liquids, flammable gases, greases and similar materials such as gasoline, oil, paint and natural and propane gases.
  • Feu Classe C ?
    A fire of this nature is usually a Class A or B fire, but also involves energized electrical equipment. Wiring and electrical appliances are in this class.
  • Feu Classe D ?
    A fire involving certain combustible metals such as magnesium, sodium, potassium, etc.

How do you know which extinguisher to use?
The following symbols indicate the extinguisher is applicable for use on:

Class A fires
Class A

The background of the symbol will be either Metallic or Green.

It will always be found on Water, Multi-Purpose Dry Chemical and Foam Type extinguishers and sometimes Halon extinguishers.

Class B fires
Class B
The background of the symbol will be either Metallic or Red.

It will always be found on Dry Chemical, Multi-Purpose Dry Chemical, Carbon Dioxide, Halon and Foam type extinguishers.
Class C fires
Class C
The background of the symbol will be either Metallic or Blue.

It will always be found on Dry Chemical, Multi-Purpose Dry Chemical, Carbon Dioxide and Halon extinguishers.
Class D fires
Class D
The background of the symbol will be either Metallic or Yellow.

It will always be found on special Dry Powder extinguishers, but it would be a rare case indeed for you to be faced with a Class D fire, especially in the home or office.

Class A Class B Class C Class D

On which fires is Water used and why?
Because it is an ideal cooling, soaking and penetrating agent. Its use on other classes of fire can be dangerous.

x
 
 
 

On which fires is Dry Chemical used and why?
Because it is a flame interrupting agent.

 
x
x
 

On which fires is Multi-purpose Dry Chemical used and why?
Because it melts and forms an oxygen excluding coating over solid burning materials.

x
x
x
 

On which fires is Carbon Dioxide used and why?
Because it effectively suffocates the fire and leaves no residue.

 
x
x
 

On which fires is Foam used and why?
Because it is a smothering and blanketing agent. Do not use on Class C fires because foams can be conductive.

x
x
 
 

On which fires is Dry Powder used and why?
Because it is a special smothering and coating agent. It is not suited for use on other classes of fire.

 
 
 
x

 

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Dernières modifications : 2010.10.22