Laboratory fire experiments with a 1/3 train carriage mockup

A total of six fire tests were conducted in a mock-up of a subway carriage that is about 1/3 of a full wagon length. They were carried out under a large scale calorimeter in a laboratory environment. The aim of the tests was to investigate the initial fire growth in a corner scenario using different types of ignition sources that could lead to a flashover situation. The ignition sources used were either a wood crib placed on a corner seat or one liter of petrol poured on the corner seat and the neighboring floor together with a backpack. The amount of luggage and wood cribs in the neighborhood of the ignition source was continuously increased in order to identify the limits for flashover in the test-setup. The tests showed that the combustible boards on parts of the walls had a significant effect on the fire spread. In the cases where the initial fire did not exceed a range of 400 – 600 kW no flashover was observed. If the initial fire grew up to 700 – 900 kW a flashover was observed. The maximum heat release rate during a short flashover period for this test set-up was about 3.5 MW. The time to reach flashover was highly dependent on the ignition type, wood cribs or backpack and petrol.

Lönnermark, Anders,1968-RISE,Mälardalens högskola,Akademin för ekonomi, samhälle och teknik,SP Brandteknik,MERO,SP Fire Research(Swepub:ri)AndersL@ri.se (författare)
Ingason, HaukurRISE,SP Fire Research(Swepub:ri)HaukurI@ri.se (författare)
Lindström, JohanRISE,Branddynamik (författare)
Li, Ying Zhen (författare)
Kumm, MiaMälardalens högskola,Akademin för ekonomi, samhälle och teknik(Swepub:ri)MiaKummBR@ri.se (författare)
RISEBranddynamik (creator_code:org_t)

Av författaren/redakt...: Claesson, Alexan ...; Lönnermark, Ande ...; Ingason, Haukur; Lindström, Johan; Li, Ying Zhen; Kumm, Mia

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