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==Appropriate extinguishers depending on fire class== | ==Appropriate extinguishers depending on fire class== | ||
[[File:Fire_triangle.png|thumb|right| | ==How the agents extinguish the fire== | ||
[[File:Fire_triangle.png|thumb|right|150px|[http://en.wikipedia.org/wiki/Fire_triangle Fire triangle] ]] | |||
{| class="wikitable" style="float: right" | |||
|+ How the agents extinguish the fire | |||
|- | |||
! Extinguishing agent | |||
! Cooling | |||
! Expelling of oxygen | |||
! Negative catalysis | |||
|- | |||
| water | |||
| very good | |||
| good | |||
| no | |||
|- | |||
| water + foam | |||
| good | |||
| very good | |||
| no | |||
|- | |||
| powder | |||
| no | |||
| good | |||
| yes (good) | |||
|- | |||
| CO² | |||
| no | |||
| very good | |||
| no | |||
|- | |||
| FM 200 | |||
| no | |||
| no | |||
| yes (very good) | |||
|- | |||
|} | |||
[[Category:Health and safety]] | [[Category:Health and safety]] |
Revision as of 12:59, 14 February 2012
Fire extinguishing refers to the extinguishing of a fire. The chemical powder extinguisher is nowadays used for pretty much any type of fire, however appropriate fire extinguishing assumes analysing the fire class first, and then selecting a (environmentally harmless) extinguishing agent.
Fire classes
Class A | Class B | Class C | Class D |
---|---|---|---|
Ordinary combustibles | Flammable liquids | Flammable gases | Combustible metals |
wood, paper, textile, artificial materials | gasoline, diesel, petroleum, paint thinner | propane, butane | magnesium, natrium, potassium, aluminum, alloys |
Appropriate extinguishers depending on fire class
How the agents extinguish the fire
Extinguishing agent | Cooling | Expelling of oxygen | Negative catalysis |
---|---|---|---|
water | very good | good | no |
water + foam | good | very good | no |
powder | no | good | yes (good) |
CO² | no | very good | no |
FM 200 | no | no | yes (very good) |