Fire in Room

In room 410 a fire was caused by the reaction of chemicals in a similar manner (the reaction of sodium with water as described in reference 3 5 5 ), but it was extinguished by students in attendance. The students, after closing the windows and doors of the room, went out to help fight the fire in room 403. 

This internally initiated DBA is a potential fire in Room 109, in which the residual process waste, containing up to 500,000 curies of fission products, are stored to allow decay prior to off-site shipment. Only waste barrels and carts are present in Room 109, so other than the limited quantities of combustible materials present inside the barrel there are no flammable materials inside Room 109. The hydraulic fluid used to raise the shield doors might be considered a source of flammable material due to its proximity to Room 109. Ignition sources are also limited in that there are no exposed electrical circuits in this room. Thus, there is limited potential for a fire in Room 109. 

Fire in Room 109 Frequency Bin IV, 10" > F > lO (Very Unlikely) 0.008 mrem filtered 0.08 mrem unmitigated YES... 

Also, let s assume that, if there is a fire in room 1, then components A, B, C are damaged, and if there is a fire in room 2, then components C, D become imavailable. Another assumption is that if a fire occurs in room 1, then an internal initiating event lEj occurs, and that if a fire occurs in room 2, then internal initiating events lEj and IE2 occur. These assumptions are... 

Approximate number ot persons at discovery ot fire In room, cabin, compartment, ale., of origin... 

The calculated detonation velocity in room temperature acetylene at 810 kPa is 2053 m/s (61). Measured values are about 1000-2070 m/s, independent of initial pressure but generally increasing with increasing diameter (46,60—64). In a time estimated to be about 6 s (65), an accidental fire-initiated decomposition flame in acetylene at ca 200 kPa in an extensive piping system traveled successively through 1830 m of 76—203-mm pipe, 8850 m of 203-mm pipe, and 760 m of 152-mm pipe. 

For a room temperature eontrol system, the first requirement is to deteet or sense ehanges in room temperature. The seeond requirement is to eontrol or vary the energy output from the gas fire, if the sensed room temperature is different from the desired room temperature. In general, a system that is designed to eontrol the output of a plant must eontain at least one sensor and eontroller as shown in Figure 1.5. 

Fire in control room vs hi.Ji. iffects all cooling syslenu 1, oe-4 y X ... 

Ilc.skc.stad, G. and J. P. Flill, 1986, Experimental fires in Multi-Room/Corridor EndoMiies. NIST, NBS-GCR-86-502, Gaithersburg, MD 20899. 

The transfer of heat from a source to a receiver by radiant energy is radiation. The sun transfers its energy to the earth by radiation. A fire in a fireplace is another example of radiation. The fire in the fireplace heats the air in the room and by convection heats up the room. At the same time, when you stand within line of sight of the fireplace, the radiant energy coming from the flame of the fire itself makes you feel warmer than when you are shielded from the line of sight of the flame. Heat is being transferred both by convection and by radiation from the fireplace... 

A small fire in a computer room, a telephone exchange, or an assembly plant for communication satellites can cause enormous damage because of minute amounts of corrosion on circuit elements. Furthermore, if either water or a halogenated agent is used to control the... 

It was fun to think about how I should dress, speak, move, and touch, to talk of type-foundries and colophons, watermarks and printers patrons, and all the time watch a mans hands, the tilt of his head, the way his mouth moved as he spoke, the way his fingers brushed mine as he put more drinks on the table. It was fun that could fill my head and then my body, that bright, dumb spark in a man s eye that made my skin shiver in response. And we were away from home, after all, it was only a week, and the sun was shining on the Venice canals, or the moon was rising from behind the Rockies, or the coal fire in my rooms was so glowing that it shut out the gray cold and the Lancashire rain, and wrapped us in warmth. 

An issue of interest is the contribution to fire hazard in a room from products in a plenum space above it. This contribution can result from two scenarios fire in the room or fire in the plenum. The products being addressed here are PVC electrical products contained in a plenum. 

It is of interest to calculate, too the time required for both the fire itself and the thermal decomposition of the plenum PVC products to produce a lethal atmosphere. Table III presents such results for the fire, for heats of combustion of 20 kJ/g and 40 kJ/g, a range typical of most fires. In order to carry out this calculation it is assumed that the smoke is distributed instantaneously throughout the volume being considered, one or four room-plenums. The barriers represented by walls or... 

A chair burns in a room, releasing 500 kW, and the heat of combustion for the chair is estimated as 20 kJ/g. Fire and room conditions can be considered steady. The air flow rates into a door and through a window are 200 and 100 g/s respectively. Assume the room is adiabatic. The gases have constant and equal specific heats =1.5 kJ/kg K. The ambient air is 25 °C and the chair fuel gasifies at 350 °C. Compute the average temperature of the room gases. Account for all terms and show all work. 

Zukoski, E.E., Fluid dynamics of room fires, in Fire Safety Science, Proceedings of the 1st International Symposium, Hemisphere, Washington, DC, 1986. 

Thomas, P. H., Fires and flashover in rooms-a simplified theory, Fire Safety J., 1980, 3,67-76. 

Steckler, K. D., Quintiere, J. G. and Rinkinen, W. J., Flow induced by fire in a room, in 19th International Symposium on Combustion, The Combustion Institute, Pittsburgh, Pennsylvania, 1983. 

The mass flows include fuel (F), oxygen (O2), liquid water (1), evaporated water vapor (g) and forced flows (fan). The chemical energy or firepower is designated as Q and all of the heat loss rates by q. While Figure 12.4 does not necessarily represent a fire in a room, the heat loss formulations of Chapter 11 apply. From Equation (3.48), the functional form of the energy equation is... 

It is commonly said that two can overpower one, especially if they have sufficient room for putting forth their strength. Know also that there must come a twofold wind, and a single wind, and that they must furiously blow from the east and from the south. If, when they cease to rage, the air has become water, you may be confident that the spiritual will also be transmuted into a bodily form, and that our number shall prevail through the four seasons in the fourth part of the sky (after the seven planets have exercised power), and that its course will be perfected by the test of fire in the lowest chamber of our palace, when the two shall overpower and consume the third. 

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