-- [ From: Mark Howser * EMC.Ver #2.5.02 ] --
Subject: RE: Clean Fire Extinguishers >Unfortunately, you won't find a fire extinguisher that effectively stops the fire and remains clean at the same time. >Types of Extinguishers: > >Class A: Ordinary Combustibles (wood, paper, rubber, plastic) >Class B: Flammable Liquids (liquids, greases, gases) >Class C: Electrical Equipment (live electrical equipment) >Class D: Combustible Metals (magnesium, titanium, and other "iums") > >Class A exting. are rated from 1A to 40A depending on their size. For a 1A rating 1 1/4 gallons of water are required. A 2A rating requires 2 1/2 gallons of water. (see the trend?) >A dry chemical extiguisher with a rating of 10A is equivalent to five >1/2 gallon water extinguishers. > >Class B extinguishers are rated from 1B to 640B. A complicated UL rating system best described by "...the 60B extiguisher will >effectively extinguish a sixty square foot fire when used by a non >expert...." > >Class C refers to whether the extiguishing agent conducts electricity. >You wouldn't want to spray a flaming engine with a class A fire >extinguisher unless you wanted to chance shock or electrocution. > >Class D--you aren't going to effectively stop the spread of burning >metals with any portable extinguisher. Call the FD, EPA and any other toxic spill agency that comes to mind. > >A fire extinguisher is rated as follows. > >4A 20B:C > >This extinguisher should extinguish a Class A fire that is four times >larger than a class 1A fire, extinguish approx. 20 sq/ft of class B fire and is also safe to use on energized equipment. > >Good luck, > >Mark >80 Westy >East Glacier Volunteer Fire Department -- Mark Howser Business (406) 226-5572 Hole in the Wall, Ltd. Home (406) 226-4412 PO Box 318 Email mchowser@3rivers.net East Glacier, MT 59434 Preferred Lodging and Dining near Glacier National Park "Take every day the trail way...one step at a time"
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