Smoldering combustion hazards of thermal insulation materials
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Smoldering combustion hazards of thermal insulation materials

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Published by National Bureau of Standards, Oak Ridge National Laboratory .
Written in English


Book details:

Edition Notes

Same title as: NBSIR 81-2350 and ORNL SUB 7686-1.

StatementOhlemiller, T. J.
The Physical Object
Pagination$0.00 C.1 $0.00 C.2.
ID Numbers
Open LibraryOL17584759M

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As Steen-Hansen, Mikalsen and Jensen proposed, combustible insulation materials are likely to contribute to fires by their tendency to ignite from smoldering combustion as well as visible flame.   Materials undergoing smouldering Type 2 obtained maximum temperatures in the range °C to °C and a total mass loss of 80 wt% to 90 wt%. This implies that Type 2 smouldering involves secondary char oxidation, which represents a risk for transition to flaming combustion and thereby a considerable fire by: 6. Smoldering combustion is the slow, low temperature, flameless burning of porous fuels and is the most persistent type of combustion phenomena. It is especially common in porous fuels which form a char on heating, like cellulosic insulation, polyurethane foam or peat. Smoldering combustion hazards of thermal insulation materials Technical Report Ohlemiller, T. J. ; Rogers, F. E. Work on the smolder ignitability in cellulosic insulation and on thermal analytical characterization of the oxidation of this material is presented.

An analytic model of the propagation of smoldering combustion through a very porous solid fuel is presented. Here smoldering is initiated at the top of a long, radially insulated, uniform fuel cylinder, so that the smolder wave propagates downward, opposing an upward forced flow of oxidizer. Because. Material Safety Data Sheet Extinguishing Media:Water or any standard agent may be used. Special Fire Fighting Procedures:Use standard procedures as dictated by the given situation. Material contains fire retardant and has a critical radiant flux greater than or equal to w/cm2and smoldering combustion less than or equal to 15%, per ASTM C Materials, which have a low thermal conductivity, are those, which have a high proportion of small voids containing air or gas. These voids are not big enough to transmit heat by convection or radiation, and therefore reduce the flow of heat. Thermal insulation materials fall into the latter category. Thermal insulation materials may be natural. Smoldering combustion in a packed bed of carbonaceous material is a very complex process, where numerous physical and chemical parameters are involved.

  Twentieth Symposium (International) on Combustion/The Combustion Institute, /pp. SMOLDERING COMBUSTION IN HORIZONTAL DUST LAYERS S. O. LEISCH, C. W. KAUFFMAN, M. SICHEL Department of Aerospace Engineering The University of Michigan Ann Arbor, MI U.S.A.   Fig. 1 shows a temperature–time history for the ignition of cornflour dust of particle size in the range 63 μm to μm with dust layer thickness 10 mm and chamber diameter mm. The plate temperature is shown in the figure. The final temperature of the hot surface is kept constant at °C. It can be seen that in the interval of 40 min, as the plate temperature increases, the dust. insulation is the CPSC standard, which covers four product attributes, critical radiant flux, smoldering combustion, corrosiveness, and settled density. The CPSC standard adequately addresses safety issues, but safety -- important as it is -- is only one factor in insulation . materials Article Experimental Study of Fire Hazards of Thermal-Insulation Material in Diesel Locomotive: Aluminum-Polyurethane Taolin Zhang 1, Xiaodong Zhou 1 and Lizhong Yang 1,2,* 1 State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei , China; ztlfi[email protected] (T.Z.); [email protected] (X.Z.).