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 (see also flash point). Flashover normally occurs at 500°C (932°F) or 590°C (1,100°F) for ordinary combustibles, and an incident heat flux at floor level of 20 kilowatts per square metre (2.5hp/sqft).
An example of flashover is ignition of a piece of furniture 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.
Flashover is a 2008 documentary film concerning the release of John Deacon from prison after he was wrongfully convicted of arson in 2005.
Story
March 27, 2004 an apartment building in Brockton, MA caught on fire resulting in two injured persons and hundreds of thousands of dollars in damages. A stove in one of the apartments malfunctioned and fed gas back into the ventilation system. The gas poured into the entire room and eventually combusted. Initial investigations revealed traces of flammable liquids soaked in various fabrics within the apartment. An arson investigation began soon after the discovery.
Police targeted two men: Frank Iannetta and John Deacon. Ianetta, the owner and superintendent of the apartment building would often delegate the electrical work to John Deacon. On March 27, John Deacon had been working on the 4th floor installing new outlets in compliance with health and safety regulations.
A week before the fire, Iannetta received a 2nd notice to make a number of repairs or the building would be condemned. The investigators took Iannetta and Deacon in for questioning. Ianetta confessed to setting up the fire to collect insurance money and also claimed that Deacon had sabotaged the stove to feedback into the room.
Myriads of silver discs Signals have been noticed Out on the drift Here comes the flashover From our new neighbor Here comes the flashover Behold new colors Messages, fresh images The over mind Has noticed another shift Never seen before Others bring new dawns Colored grays are on display The waiting is no more Never seen before Others bring new dawns Imagination's opening Inviting us on board Here comes the flashover Myriads of silver discs The over mind Has signaled another lift Dimensions of time have come undone Now we have become so unalone Migration, space, extensions, differences Information increases becoming
The MonroeFireProtectionDistrictFlashoverChamber is a training tool designed to provide firefighters with a controlled environment to recognize signs of a flashover ... https.//on.in.gov/fire-behavior-and-flashover-bloomington-june-29.
GRANT Twp. – Have you ever wondered how firefighters train to suppress the dangerous blaze of a structure fire or any fire that is building to flashover point? In Michigan, there is a FireAcademy at Oakland Community College (OCC) ... .
Flashover Maintenance out of Crestline, RiverRun ... “Part of what we do at Flashover Maintenance is give back,” said David Taylor, the organization’s vice president of operations.
Also known as flashover training, she said this program is free for the participating departments as it is through the OhioFireAcademy.What is a flashover? ... To prepare for a flashover, the U.S.
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Oxide Pang’s second film about firefighting plays more like a military thriller, with plenty of rousing speeches, but its plot is weak and its one-dimensional characters play second fiddle to the pyrotechnics ... .
Supporting local organizations through their community and finding ways to produce the best quality products is what FlashoverFarms thrives to do ... Flashover offers a variety of products from fresh ...
This paper presents the development of an attention based bi-directional gated recurrent unit model, P-Flashv2, for the prediction of potential occurrence of flashover in a traditional 111 m2 single story ranch-style family home.
NIST-led engineers are working on building a real-time alert system AI could help save firefighters' lives by predicting fire flashovers before they occur, according to new research published this week ... .
Iosco County News Herald
08 May 2024
Iosco County News Herald
08 May 2024