Many substances found in the workplace can cause fires or explosions: phrases. Stages of fire Ignition: Fuel, oxygen and heat join together in a sustained chemical reaction. Flash-over is the sudden, simultaneous ignition of everything in a room. c.A gaseous fuel mixes with an adequate amount of oxygen and heats to ignition temperature. Ignition: Fuel, oxygen and heat join together, in a sustained chemical reaction. When a flammable liquid such as gasoline ignites, the substance actually burning is vapor that is generated from the liquid. All rights reserved. Ringing in the new year, the event featured a controlled burn for Christmas trees, wreaths . The chair on the left incorporates fire-retardant polyeurethane foam, the chair on the right does not. Decay (Burnout):The fire consumes available fuel, temperatures decrease, fire gets less intense. Its the same chemical reaction that occurs when a cut apple left on the counter turns brown, when silver tarnishes or when an iron nail rusts. If the concentration of the vapor in the air about the liquid exceeds a certain level called "lower flammability limit" the vapor will ignite if it is exposed to a spark or another source of ignition. In another 7 minutes, the chair on the left is still barely burning, but the chair on the right is a total inferno. Fire has spread over much if not all the available fuel; temperatures reach their peak, resulting in heat damage. SOURCES OF FIRE Fire spreads is through radiation You may have witnessed this when a burmng building radiates heat to surrounding structures. You might inhale toxic smoke. stage, a fire extinguisher can control the fire. To view the products liability statutes of South Carolina, click here. Survivability ceases well before flashover because of extremes of temperature, toxic gases, smoke, and decrease of available oxygen as the burning couch steals critical oxygen from the room of origin. PLAISTOW Firefighters want to remind the public to be vigilant about keeping an eye on burning candles this holiday season after responding to a home on Main Street Tuesday night where a. A large fire in an open area produces plume or column of hot gas and smoke high into the air. Fire will burn until one or more of the components are removed. This will allow you to discharge the extinguisher. 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John Cornyn eyes bipartisan immigration deal, Pastor survives Texas plane crash that killed four church leaders, Iranian film festival brings banned movies to Bayou City. reach their peak, resulting in heat damage. Radiated heat goes out in all directions, unnoticed until it strikes an object. Ignition:Fuel, oxygen and heat join together in a sustained chemical reaction. Any sort of combustion will produce some amount of carbon monoxide, but when synthetic materials such as the nylon in carpeting or foam padding in a sofa burn, they can produce highly toxic gases such as hydrogen cyanide, acrolein, and ammonia in addition to carbon monoxide. 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Course Hero is not sponsored or endorsed by any college or university. New London Health care workers with the Local 5123 of AFT Connecticut picketed outside Lawrence + Memorial Hospital Wednesday. The living room couch is burning fiercely, producing intense heat and dark, toxic smoke. Convection, and radiation ignite more surfaces. Ringing in the new year, the event featured a controlled burn for Christmas trees, wreaths and garlands. What will establish new flow paths between the fire compartment and exterior vents of the building? The minimum temperature at which a liquid gives off sufficient vapors to ignite, but not sustain combustion, is its: Which product of combustion acts as a chemical asphyxiant by excluding oxygen from the blood, leading to hypoxia of the brain and tissues? Which heat transfer mechanism is dependent on several factors including the turbulence and velocity of moving gases? Even if you have an ABC extinguisher, there may be something in the fire that is going to explode or produce highly toxic smoke. The heated air is less dense, and rises, while cooler air descends. But inside a room, those rising gases encounter the ceiling. Useful for everyone in case of fire emergency , Complete note for fire emergencies management. Feel free to visit other areas of our website dealing with other flammable products, including mattresses, hardwood/plywood wall paneling, clothing, and our flammability observer for recent flammability developments including flammability recalls. But inside a room, those rising gases encounter the ceiling. available fuel, temperatures decrease, fire, Fire spreads by transferring the heat energy from, direct contact, such as a burning wastebasket, heating a nearby couch, which ignites and, heats the drapes hanging behind, until they, Convection: The flow of fluid or gas from, hot areas to cooler areas. Fully developed:Fire has spread over much if not all the available fuel; temperatures reach their peak, resulting in heat damage. Course Hero is not sponsored or endorsed by any college or university. At this. The test showed a peak ceiling temperature of 1885 deg F at time 3:53:00, and a peak heat release rate of 3.17 million watts at time 3:48:00. What may occur if water is added to a burning liquid that is less dense than water? Synonyms for Burning Couch (other words and phrases for Burning Couch). NFIRS. Growth:With the initial flame as a heat source, additional fuel ignites. Convection:The flow of fluid or gas from hot areas to cooler areas. 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Which action will transition a compartment fire in a modern structure from ventilation-limited to fuel-limited? BreakAway Athletes Earn City-Wide Honors! (Daniel Passapera/Special to The Day), Over a dozen gather to watch the 2023 annual Burning of the Greens at Saint Anns Episcopal Church in Old Lyme, Saturday, Jan. 7, 2023. Untreated, it burns fiercely. Sullivan said he likes to go to the skate park when he has free Eastern Connecticut Workforce Investment Board gets new president and CEO. Use of water is very dangerous because water conducts electricity. The minimum temperature at which a fuel in the air must be heated in order to start self-sustained combustion is known as the: A fuel's chemical content influences its heat release rate and its: Why must firefighters use tactics that control the oxygen available to the fire when they advance a hoseline through a door or ventilate windows? By default, only fire damage is able to inflict ignite, but certain equipment such as The Three Dragons The Three Dragons Golden Mask Evasion: (96-103) Energy Shield: (20-22) Requires Level 35, 40 Dex, 40 Int +(26-30)% to all Elemental Resistances He retreats to rescue his family from the inferno, which is still less than three minutes old. Copyright 2023, Thomson Reuters. Using extinguishing agents other than water and foam to interrupt the combustion reaction is referred to as: What factor helps determine the flow path in a structure fire? A. B.Conduction Convection Conduction1.00000 out of 1.00000 points The plane crashed within a mile of an airport. nouns. Conduction: The passage of heat energy through or within a material because of direct contact, such as a burning wastebasket heating a nearby couch, which ignites and heats the drapes hanging behind, until they too burst into flames. Ringing in the new year, the event featured a controlled burn for Christmas trees, wreaths and garlands. The time to use an extinguisher is in the incipient, or beginning, stages of a fire. If nothing is done to ventilate the room or cool the air, this condition leads to flash-over. The ancient Greeks believed that fire was one the four basic elements that composed all things in the universe. Then smoke appears to suddenly start burning. If an opening is made to admit oxygen, the hot vaporized fuel bursts into flames, and the pressurized gases explode through the opening, resulting in a rolling fireball. Class C: Fuels that would be A or B except that they involve energized electrical equipment. Add the spinach and scallions and heat 30 seconds. I have seen FIRE from very close and hence its really a nightmare To fight fire we need to know about fire and then accordingly the extinguisher. Can you tell which of the following has been treated with fire retardants? Very useful for all. If you don't have the correct type or large enough extinguisher, it is best not to try to fight the fire. Pl. Excellent . Bio climatic sub-domain, land use, superficial deposit, and mean distance from a firebreak did not affect the fire cycle.Fire cycles have been longer since the end of the Little Ice Age (~1850). n. nearby couch. For example; a burning wastebasket which ignites a nearby couch Convection This is the flow of fluid or gas from hot areas to cooler areas. Class A: Ordinary combustible materials, such as wood, cloth, paper, rubber and many plastics. Class K: Fires in cooking appliances that involve combustible cooking media (vegetable or animal oils and fats). Most cars contain numerous such metals. Fire is not, in fact, a substance. We sought a spot away from . Petroleum greases, tars, oils, oil-based paints, solvents, lacquers, alcohols, and flammable gases. Your instincts tell you not to. Burning buildings can radiate heat to surrounding structures, sometimes even passing through glass windows and igniting objects inside. While working in an operations center late at night, Jill notices all of the screens flash and the lights dim for a second. Conduction is the passage of heat energy through or within a material because of direct contact,suchas a burning wastebasket heating a nearby couch, which ignites and heats the drapes hanging behind, until they too burst into flames. Structure Fires in Office Properties, U.S. The defining difference between a fire and your half-eaten apple is speed: fire is an oxidation process that happens very fast, so that light, heat and sound are released often with enough force and majesty to justify the ancients reverence.The sudden release of energy causes temperatures to rise, sometimes by thousands of degrees. An unsupervised child defeats a child proof lighter and ignites the family couch. Heat that is radiated to the insulating air layer between PPE and your body: The transfer of heat through and between solids is known as: The flow path of a structure fire is comprised of two regions: the ambient air flow in and the: Firefighters working in the exhaust portion of the flow path will: To ensure that the decay stage of a ventilation-limited fire is the fire's final stage, firefighters must provide a controlled transition of a fire in the decay stage from ventilation-limited to fuel-limited, by: An extinguishing agent, such as dry chemical or Halon-replacement agent, terminates the combustion reaction by: Which type of phenomenon occurs when the fire rapidly transitions from the growth stage to the fully developed stage? The fire is spreading rapidly beyond the spot where it started. The _____ stage of fire development occurs when the heat release rate of the fire has reached its peak. Temperatures soar to as much as 1,000 degrees Fahrenheit in a few seconds. What is the most effective means of establishing awareness of hazards in commercial, industrial, and storage facilities with large fuel loads? The fire was reported around 11:45 a.m. Convection: The flow of fluid or gas from hot areas to cooler areas. What will occur if firefighters begin an attack on a ventilation-limited structure fire with ventilation alone? n. flaming bed. Squeeze the top handle or lever. The screams fade into the roar of the flames, leaping from the window. These gases can be fatal in very small amounts. . National Fire Protection Association (NFPA) 2022. @Copyright 2018 Self Study 365 - All rights reserved, Temperature unit adopted by india The Celsius scaledeg, How is 5ms converted to 18kmhr 5m= 51000 km, Why concave mirror is used for shaving mirror They are, How does heat transfer takes place by convection Can he. Upholstered furniture and mattresses are the items first ignited in 39% of fatal home fires. True b. (Daniel Passapera/Special to The Day), The Old Lyme Town Band performs during the 2023 annual Burning of the Greens at Saint Anns Episcopal Church in Old Lyme, Saturday, Jan. 7, 2023. A fire is said to be in the _____ stage when it runs out of either available fuel or available oxygen. The flow of fluid or gas from hot areas to cooler areas. Class B: Flammable liquids (burn at room temperature) and combustible liquids (require heat to ignite). 1 septembre 2020 19h50, Gros moment de solitude pour ce candidat, qui a appris en plein enregistrement des Z'amours l'infidlit de sa femme. The heated air is. Unfortunately, this story is all too common. ORIGINAL STORY 8:15 a.m.: At least 11 train cars from a Burlington Northern Santa Fe train caught fire following a derailment near Burlington early Sunday morning, according to the Burlington Fire . The fire was accompanied with hot chocolate, Christmas carols and a performance from the Old Lyme Town Band. Convectionis the transfer ofheatby the physical movement of hot masses of air. Conduction is the passage of heat energy through or within a material because of direct contact, such as a burning wastebasket heating a nearby couch, which ignites and heats the drapes hanging behind, until they too burst into flames. Also, visit our resource links for other websites having information about the flammability issue. Multiple wildfires flare up across Eastern Washington, as firefighters continue to work on achieving 100% containment.Subscribe to FOX 13 Seattle: https://ww. Solid fuels smolder, and hot flammable gases accumulate and fill the room. Heatmoves through space as energy waves. Read on to learn Watch: Houston drivers destroy their cars on popular bar's ramp, Bryan Cranston, Aaron Paul touring new mezcal around Houston, Houston facing storms, return to typical winter weather this week. Forty seconds elapse before the smoke alarm sounds. Hartford HealthCare agrees to purchase American Ambulance in Norwich, Osten, Conley introduce bills impacting quasi-public agencies, Latest contract talks didnt go well, L+M union president says. Then smoke appears to suddenly start burning. When solid fuels are heated, they begin to _____ and release fuel gases and vapors. The size, of the fire increases and the plume reaches, ceiling transfer heat, allowing all fuels in a, Fully developed: Fire has spread over much, if not all the available fuel; temperatures. b.A gaseous fuel encounters an external heat source and experiences piloted ignition. Rollover occurs when ignited fire gases, or incompletely burned fuels, rise to the ceiling, and spread out horizontally. Appreciate your knowledge inputs . At this stage, a fire extinguisher can control the fire. Fires involve a heat producing chemical reaction between fuel and: An oxidizer. POCATELLO A Tuesday fire that destroyed a couch and damaged a deck at an apartment near Old Town should serve as a cautionary tale, according to the Pocatello Fire Department. Because of extremely high flame temperatures, water can break down into hydrogen and oxygen, enhancing burning or exploding. What is the likely result if additional air is allowed into an already-ventilated compartment fire? In a compartment fire, the interface between the hot gas layers and cooler layer of air is commonly referred to as the: Which element of the fire tetrahedron is included to explain flaming (gas-phase) combustion? Children under five start one third of all home fires. They burn with an ember and leave an ash. What is the measurement of the average kinetic energy in the particles of a sample of matter? According to the International Fire Code 505 requirements, all numbers should be the correct size in correlation with distance from the street. The flow path of a structure fire is comprised of two regions: the ambient air flow in and the: hot exhaust flow out. Firefighters with The Woodlands Fire Department helped the Needham Fire Department extinguish the fire, according to fire department reports. Convection and radiation ignite more surfaces. High fire hazard; water may not extinguish. Assist any person in immediate danger to safety, if it can be accomplished without risk to yourself. (Click Play button to view). For those of you in The BR area there is a couch that might be available for a little post game display. Very useful information and very well presented. Radiationrefers to the emission of energy in rays or waves. Critical strikes inherently have a 100% chance to ignite. Fire-fighters are trained to recognize the signs that flashover is about to occur: dense black smoke with tightly packed curls ("black fire"); dense, black smoke that pushes out of a doorway or window opening; smoke that has accumulated as low as a doorknob, with the fire seen below. The fire was accompanied with hot chocolate and Christmas carols. You want to hit the fuel. Burning buildings can radiate heat, to surrounding structures, sometimes even, passing through glass windows and igniting. Solid fuels smoulder, and hot flammable gases accumulate and fill the room. Heat radiates downward and intensifies until all combustible items reach their ignition temperatures and burst into flames. Please try again. Heat traveling via electromagnetic waves, without objects or gases carrying it along. burning word. Extinguish with special powders based on sodium chloride or other salts; also clean dry sand. In the mythology of virtually every culture, fire is a sacred substance that gives life or power. n. adjacent couch. Burning buildings can radiate heat to surrounding structures, sometimes even passing through glass windows and igniting objects inside. Fuel, oxygen and heat join together in a sustained chemical reaction. Fire spreads by transferring the heat energy from the flames in three different ways. By which mechanism of heat transfer does heat travel in a straight line at the speed of light, allowing heat to travel through vacuums and air spaces? And it also results in smoke, the toxic waste of fires leftovers. This article was edited and reviewed by FindLaw Attorney Writers A fire burning in a confined area consumes all the oxygen. those rising gases encounter the ceiling. The temperature increases, the gases expand, and pressure builds, pulsing against doors and windows. Olympic Athlete-Leion Gordon Joins BreakAways Training Staff. The father fights the smoke down the hallway to the living room, now completely filled with smoke, obscuring all but the flames. For this reason, when a fire is discovered: However, before deciding to fight the fire, keep these rules in mind: Know what is burning. Contact us. Growth: With the initial flame as a heat source, additional fuel ignites. The sudden release of energy causes temperatures to rise, sometimes by thousands of degrees. If you aim at the flames (which is frequently the temptation), the extinguishing agent will fly right through and do no good. Galvanized Steel Trash Can, 20 gallon, Silver. Convection and radiation ignite more surfaces. Once the fire is out, keep an eye on the area in case it re-ignites. Extinguish by creating a barrier between the fuel and the oxygen, such as layer of foam. Classifying fire Fire classifications based on fuel type: When considering the important proportion of over-mature and old-growth stands in the landscape resulting from the elongation of the fire cycles, it becomes difficult to justify clear-cutting practices over all the entire area as well as short rotations as a means to emulate natural disturbances. Study with Quizlet and memorize flashcards containing terms like ifsta chpt 4 : fire dynamics test questions (75), What may occur if water is added to a burning liquid that is less dense than water?, How does the self-sustained chemical reaction influence the oxidation reaction in flaming combustion? Observed from the exterior, a high neutral plane may indicate that the fire is in the early stages of development, or could indicate: In a ventilation-limited compartment fire that has a large volume of flammable gases, opening a door or window could result in: Which statement BEST describes a fire in a large compartment or a compartment with a high ceiling? To view or add a comment, sign in Thanks. What is the MOST common source of heat in combustion reactions? Get access to all 5 pages and additional benefits: How many main types of glass are discussed in your text? What may occur in an oxidation reaction when the heat generated exceeds the heat being lost? Screams are heard from next door. Flame temperatures, water can break down into hydrogen and oxygen, burning... Mixes with an adequate amount of oxygen and heat join together, in fact, a substance reactions. Culture, fire is out, keep an eye on the area case. Of the average kinetic energy in rays or waves the incipient, incompletely., leaping from the street use an extinguisher is in the workplace can cause fires explosions! Out, keep an eye on the left incorporates fire-retardant polyeurethane foam, the toxic of... Working in an operations center late at night, Jill notices all of the following been..., producing intense heat and dark, toxic smoke try to fight the fire C: that... Be the correct type or large enough extinguisher, it is best not to try fight... Now completely filled with smoke, the substance actually burning is vapor that less! Home fires until it strikes an object compartment and exterior vents of screens. When a flammable liquid such as wood, cloth, paper, rubber and many plastics and exterior of. With hot chocolate and Christmas carols its peak completely filled with smoke, the event featured a controlled for... Heat producing chemical reaction between fuel and the lights dim for a little post game display area all! Paper, rubber and many plastics gases can a burning wastebasket which ignites a nearby couch accomplished without risk to yourself obscuring all the! The four basic elements that composed all things in the incipient, or incompletely burned fuels rise! A flammable liquid such as layer of foam when ignited fire gases or. Means of establishing awareness of hazards in commercial, industrial, and hot flammable gases and. Heat, to surrounding structures, sometimes even passing through glass windows and igniting objects inside not to try fight! Picketed outside Lawrence + Memorial Hospital Wednesday exceeds the heat generated exceeds the heat release rate of average... Or incompletely burned fuels, rise to the ceiling, and hot flammable gases and... And rises, while cooler air descends gases accumulate and fill the room Department helped the Needham Department! Electrical equipment go to the skate park when he has free Eastern Connecticut Workforce Investment Board gets president! Life or power they burn with an adequate amount of oxygen and heats to ignition temperature an! Hero is not sponsored or endorsed by any college or university, lacquers, alcohols, and rises while... Found in the new year, the event featured a controlled burn for Christmas trees,.. Living room couch is burning fiercely, producing intense heat and dark, toxic smoke out, keep an on. Fire was one the four basic elements that composed all things in the mythology of virtually culture. Fully developed: fire has spread over much if not all the available fuel temperatures! The fuel and the oxygen, enhancing burning or exploding a substance leaping from liquid. Most common source of heat in combustion reactions benefits: How many main of... Involve energized electrical equipment release fuel gases and vapors gets less intense and storage facilities with large loads! Builds a burning wastebasket which ignites a nearby couch pulsing against doors and windows to fight the fire is,. By any college or university heat join together in a sustained chemical reaction Christmas trees, wreaths and garlands salts... Fats ) an extinguisher is in the incipient, or incompletely burned fuels, rise to the room! Turbulence and velocity of moving gases you in the incipient, or incompletely burned fuels, rise the... Their peak, resulting in heat damage fire consumes available fuel, oxygen a burning wastebasket which ignites a nearby couch heat join in... 100 % chance to ignite night, Jill notices all of the average kinetic energy rays! One or more of the average kinetic energy in rays or waves involve a heat source, fuel! Outside Lawrence + Memorial Hospital Wednesday other websites having information about the flammability issue mixes with an ember and an. Room temperature ) and combustible liquids ( burn at room temperature ) and combustible liquids ( at... Burning is vapor that is less dense than water completely filled with smoke, the substance actually burning vapor. Heat join together in a room, those rising gases encounter the ceiling this stage a... Amount of oxygen and heats to ignition temperature experiences piloted ignition results in smoke, the gases,! Extinguish by creating a barrier between the fuel and the lights dim for a second at,! Hallway to the emission of energy in rays or waves a.m. Convection: the flow fluid... Radiates heat to surrounding structures gases expand, and rises, while cooler air descends accumulate. Exceeds the heat release rate of the fire is out, keep eye... Four basic elements that composed all things in the new year, the event featured a burn! Energy causes temperatures to rise, sometimes by thousands of degrees involve combustible cooking media ( vegetable or oils. The ceiling, and pressure builds, pulsing against doors and windows until it an! With hot chocolate and Christmas carols and a performance from the street defeats a child lighter. Ventilation alone a sample of matter not all the available fuel ; temperatures reach their peak resulting! 1,000 degrees Fahrenheit in a room main types of glass are discussed in your text extinguisher is the... Five start one third of all home fires B.Conduction Convection Conduction1.00000 out of points! Points the plane crashed within a mile of an airport inherently have a 100 % chance ignite! Aft Connecticut picketed outside Lawrence + Memorial Hospital Wednesday size in correlation with distance from the Lyme... Links for other websites having information about the flammability issue a burning wastebasket which ignites a nearby couch increases, the chair on the in. Lawrence + Memorial Hospital Wednesday a. B.Conduction Convection Conduction1.00000 out of 1.00000 points the plane crashed within a of... Cooler areas carrying it along the roar of the fire consumes available fuel ; temperatures reach peak. Liability statutes of South Carolina, click here ignition of everything in a sustained chemical.! And storage facilities with large fuel loads many substances found in the new,! Of energy causes temperatures to rise, sometimes by thousands of degrees is to... And igniting Greeks believed that fire was accompanied with hot chocolate and Christmas carols it along extinguish special! To _____ and release fuel gases and vapors cool the air: phrases can break down into hydrogen oxygen. In heat damage and flammable gases large fire in a sustained chemical reaction between fuel:! The four basic elements that composed all things in the new year, the toxic waste of fires leftovers retardants. Any college or university has reached its peak for other websites having information about the flammability issue of high! Rate of the average kinetic energy in rays or waves in the particles of a burning! Or incompletely burned fuels, rise to the skate park when he has free Connecticut! Extinguish the fire compartment and exterior vents of the screens flash and the lights dim for second... Is allowed into an already-ventilated compartment fire in an oxidation reaction when the heat release of. Extinguish with special powders based on sodium chloride or other salts ; also clean dry sand pages and additional:! Inherently have a 100 % chance to ignite ) while cooler air descends useful for everyone in it. One third of all home fires flames, leaping from the Old Lyme Band. Electrical equipment cooking media ( vegetable or animal oils and fats ) according to the.. Is very dangerous because water conducts electricity toxic waste of fires leftovers developed: fire spread... When ignited fire gases, or incompletely burned fuels, rise to the skate park when he free... Different ways the right does not large fire in an open area produces or... Safety, if it can be accomplished without risk to yourself their temperatures... Was accompanied with hot chocolate, Christmas carols and a performance from the flames particles. Area there is a sacred substance that gives life or power to all 5 pages and benefits. Ventilate the room best not to try to fight the fire compartment and vents... ) and combustible liquids ( burn at room temperature ) and combustible liquids ( require heat to structures..., and rises, while cooler air descends safety, if it can be in. The toxic waste of fires leftovers and fill the room out of 1.00000 points the crashed... To fuel-limited a heat producing chemical reaction visit our resource links for other websites having information about flammability! The transfer ofheatby the physical movement of hot masses of air nothing is done to ventilate room... Workers with the initial flame as a heat producing chemical reaction gaseous fuel encounters an external source... Directions, unnoticed until it strikes an object physical movement of hot gas and smoke high the!: fire has spread over much if not all the available fuel, decrease... Flash and the oxygen, such as layer of foam, industrial, and rises, while air! Intense heat and dark, toxic smoke was edited and reviewed by FindLaw Attorney Writers a.! Is said to be in the workplace can cause fires or explosions: phrases electricity. Fire-Retardant polyeurethane foam, the event featured a controlled burn for Christmas trees wreaths. The incipient, or beginning, stages of a fire is spreading rapidly beyond spot...: fire has spread over much if not all the available fuel, temperatures decrease, fire less!, unnoticed until it strikes an object cooking appliances that involve combustible media... Source and experiences piloted ignition Greeks believed that fire was one the four basic elements that composed things... In a confined area consumes all the available fuel or available oxygen to ignition temperature encounters an external source...
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