Description
This paper presents the results of analyses of fire scenarios occurring in trains standing at a platform. These were carried out to support a broader study to assist Amtrak in defining the requirement for egress from an open station.
In this study the tenability close to the perimeter of the fire have been assessed, specifically the radiation from the fire itself. Although tenability in an enclosed station would also be affected by visibility and toxicity of the smoke, depending on the design elements of the station, the parameter that most limits the distance to the tenable boundary is likely to be radiation.
CFD analyses were carried out for a number of fire scenarios based on Amtrak’s design fire size of 31 MW for a single car fire, with assessment of smaller fires in the range of 5 to 10 MW that simulate, for example, under-car fires.