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An Assessment Methodology For The Fire Performance Of School Bus Interior Components

Braun, E., Klote, J.H., Davis, S., Levin, B.C., Paabo, M. and Gann, R.G., 1991. An Assessment Methodology For The Fire Performance Of School Bus Interior Components. Fire Safety Science 3: 855-864. doi:10.3801/IAFSS.FSS.3-855


A full-scale fire performance protocol for the evaluation of school bus seat assemblies was developed. This protocol is based on the results of full-scale testing of end-use seat assemblies and computer fire modeling of the ignition source and burning item(s) in a single compartment enclosure. Tenability criteria were applied to the results of the full-scale tests and computer fire model calculations. The results showed that temperature is a suitable criterion for this application. Toxicity of the decomposition products plays a secondary role in determining occupant survivability. Occupant tenability limits are exceeded for ignition sources over 300 kW, independent of the type of seat assembly. Based on the full-scale test data, computer simulations were conducted to determine which tenability criteria were exceeded in the full-scale tests.


bus, combustion products, fire performance, hazard, tenability, toxicity

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