write an essay on your experience during fire hazard
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Answer:
It is important to have a basic understanding about how a fire occurs and behaves within a building. Essentially, fire is a chemical reaction. A carbon-based material (fuel) mixes with oxygen (usually a component of air) and comes in contact with something hot enough to heat this mixture so that combustible vapors are produced. If these vapors dissipate, then nothing happens. However, if they come in contact with an ignition source--such as open flame--a fire results. Depending on the combustibility of the ignited fuel, the fire may start as a slow-growth scenario with a long smoldering period or it may grow rapidly with almost no smoldering time. In either instance, once visible flames appear, the fire's destructive forces increase exponentially.
The flaming stage of a fire will start with a rapid rise in heat levels, initially along the room's ceiling, and then throughout the entire space. During the first two to three minutes, ceiling temperatures can reach 1,000°C (1,800°F). Over the next few minutes, these temperatures will spread throughout the room as the ceiling's layer of hot gases migrates. Ultimately, this gas layer acts like an oven's broiler, superheating and igniting all combustibles in the room. At that point, the room and all within it are completely destroyed.
The fire can then spread through open doorways and wall penetrations, or through concealed wall and ceiling cavities to other spaces in the building. Ultimately, if not suppressed, the fire can lead to a total loss of the building and its contents, not to mention the loss of lives.
Based on these realities, the preferred fire is the one that never happens; this is the only way to actually avoid fire losses. Common fuels in hospitals include paper, wood and plastic furnishings, textiles, chemicals, gases, and other combustible components of the building. Typical ignition sources include electrical and lighting equipment, heating and air-conditioning systems, cigarette use, cooking, office equipment, extension cords, food and beverage preparation, and warming equipment.
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