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Fires are classified by the proper extinguishing agent. While water is used on Class A fires, using water on a Class B fire (e.g., a grease fire) is extremely dangerous. This is because Class B fires typically have a fuel with a lower density than water (causing it to rise) and the burning fluid is
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fires pose a greater safety risk. One ten-year study, examining the years 1976 to 1985, found that 4.7% of hospitalized burn patients suffered burns from hot grease or oil, with 78% of such injuries occurring in the home. According to the
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involved cooking; over the same time period, cooking equipment was implicated in 19% of home fire deaths, 44% of home fire injuries, and 17% of total direct property damage. Grease fires are an object of study in
148:. For example, when water is placed on grease, it creates steam which expands rapidly and splatters burning droplets in a phenomenon causing burns and spreading the fire. Because of this, Class A
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262:– an active fire protection system designed to respond to Class B fires inside infrastructure by removing flammable liquids into secondary containment
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116:); Class C fires (in which the burning material is energized electrical equipment) and Class D fires (in which the burning material is combustible
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144:). The resulting sudden rising of a column of flames together with droplets of boiling fuel and water is generally known as a
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457:
Schubert, Warren; Ahrenholz, David H.; Solem, Lynn D. (1990). "Burns from Hot Oil and Grease: A Public Health Hazard".
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use water, while Class B fire extinguishers use dry chemicals (foam or powder), such as aqueous film-forming foam,
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Class B fires are distinguished from the other fire classes: Class A fires ("ordinary combustibles" such as
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Fighting Fires in and Around
Flammable and Combustible Liquid Atmospheric Storage Tanks
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Out of the Frying Pan and into the Grease Fire: A Case Study in Food
Science
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Fundamentals of Fire
Protection for the Safety Professional
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Attempts to extinguish a grease fire during a demonstration
394:. API Publication 2021 (3rd ed.). Washington, D.C.:
512:, National Center for Case Study Teaching in Science,
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443:Lon H. Ferguson & Christopher A. Janicak,
89:fires are types of Class B fires. The use of
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345:Robert H. Hill, Jr. & David C. Finster,
97:, for example, creates a Class B fire. Some
303:, 8th ed. (Centgage Learning: 2009), p. 76.
416:. NFPA 30 (2018 ed.). Quincy, Mass.:
459:Journal of Burn Care & Rehabilitation
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363:
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301:Modern Livestock & Poultry Production
299:James R. Gillespie & Frank Flanders,
347:Laboratory Safety for Chemistry Students
322:International Association of Fire Chiefs
260:Ignitable Liquid Drainage Floor Assembly
330:Fire Inspector: Principles and Practice
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233:Other combustible materials fire symbol
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493:Home Fires Involving Cooking Equipment
414:Flammable and Combustible Liquids Code
190:fire departments in the United States
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497:National Fire Protection Association
418:National Fire Protection Association
326:National Fire Protection Association
284:National Fire Protection Association
186:National Fire Protection Association
101:are also Class B fire materials.
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221:Combustible materials fire symbol
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471:10.1097/00004630-199011000-00014
369:JB Crippin, "Types of Fires" in
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124:(known in the United States as
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334:Jones and Bartlett Publishers
288:Jones and Bartlett Publishers
396:American Petroleum Institute
154:multi-purpose dry chemicals
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447:(2d ed. 2015), pp. 203-04.
120:). The less-commonly-used
172:) or highly pressurized
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514:University at Buffalo
351:John Wiley & Sons
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538:at Wikimedia Commons
336:, 2012), pp. 204-06.
45:or flammable gases,
373:(ed. Max M. Houck:
136:of water (212
371:Forensic Chemistry
158:ammonium phosphate
150:fire extinguishers
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534:Media related to
209:Class B fire icon
43:flammable liquids
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499:(November 2016).
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140:or 100
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35:Class B fire
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31:fire classes
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248:Grease duct
181:cooking oil
179:Grease and
162:halogenated
79:natural gas
267:References
170:Halon 1211
166:Halon 1301
349:(2d ed.:
282:, p. 23 (
49:greases,
47:petroleum
546:Category
412:(2018).
390:(1991).
353:, 2016).
290:: 2006).
242:See also
156:such as
146:slopover
99:plastics
87:kerosene
83:gasoline
71:alcohols
67:lacquers
63:solvents
479:2286612
126:Class K
122:Class F
75:propane
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160:, and
118:metals
114:rubber
112:, or
110:paper
93:on a
69:, or
37:is a
475:PMID
422:ISBN
410:NFPA
168:and
106:wood
85:and
55:oils
51:tars
39:fire
33:, a
467:doi
388:API
41:in
29:In
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142:°C
138:°F
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