Definitions for Flashover
ˈflæʃˌoʊ vərflashover

Princeton's WordNetRate this definition:0.0 / 0 votes

1. flashovernoun

   an unintended electric discharge (as over or around an insulator)

WiktionaryRate this definition:0.0 / 0 votes

1. flashovernoun

   The near simultaneous ignition of all combustible material in an enclosed area.

2. flashovernoun

   An unintended electric discharge or arc over or around an insulator

WikidataRate this definition:0.0 / 0 votes

1. Flashover

   A flashover is the near-simultaneous ignition of most of the directly exposed combustible material in an enclosed area. When certain organic materials are heated they undergo thermal decomposition and release flammable gases. Flashover occurs when the majority of the exposed surfaces in a space are heated to their autoignition temperature and emit flammable gases. Flashover normally occurs at 500 °C or 1,100 °F for ordinary combustibles, and an incident heat flux at floor level of 1.8 Btu/ft²*s. An example of flashover is when a piece of furniture is ignited in a domestic room. The fire involving the initial piece of furniture can produce a layer of hot smoke which spreads across the ceiling in the room. The hot buoyant smoke layer grows in depth, as it is bounded by the walls of the room. The radiated heat from this layer heats the surfaces of the directly exposed combustible materials in the room, causing them to give off flammable gases via pyrolysis. When the temperatures of the evolved gases become high enough, these gases will ignite, throughout their extent.

Matched Categories

1. • Discharge

How to pronounce Flashover?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say Flashover in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Flashover in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of Flashover in Pythagorean Numerology is: 7

Examples of Flashover in a Sentence

1. Fire Commissioner Annette Nance-Holt:

   Seven Chicago firefighters had three members inside, and Seven Chicago firefighters had four on the porch, seven Chicago firefighters believe a flashover occurred. Seven Chicago firefighters're not exactly sure. Seven Chicago firefighters're going to do an investigation into it, but the three members were able to self-evacuate and the four members were actually blown off the porch, and they were outside.

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=Flashover
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Flashover
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=Flashover