Flash Fire vs VCE at the BakerRisk Wilfred E Baker Test Facility

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When a combustible vapor ignites, the result is either a flash fire or a vapor cloud explosion, also known as VCE. At the Wilfred E. Baker Test Facility (WEBTF), BakerRisk built two test rigs to demonstrate the difference between these two types of hazards. As you can see, the flash fire rig (left) is fairly empty while the VCE rig (right) contains several vertical pipes, which acts as congestion similar to process piping and equipment.
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Опубликовано:

4 окт 2024

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Комментарии : 3

@chupacabra1765 Год назад

I don't really see much difference in the structures except for size perhaps the right one appears smaller. The video and description is not really clarifying the perimeters and objectives of the test. The left one seems overly rich, as opposed to the right which seems to exhibit a more of a stoichiometric balance. The piping, or congestion you mentioned is not well defined in the video or an explanation of why it contributes to a much higher rate of deflagration.

@MrSunrise- Год назад

I can see the pipes - looks like about 50 of them. The turbulence created as the fuel-air mixture is forced past them accelerates the deflagration-to-detonation transition. The effect of piping on vapor cloud explosions has been long known, but I don't know that it has be quantified - which looks to be what they are doing here.

@Master-Disaster 7 месяцев назад

@@MrSunrise- There were empirical models that have quantified it built from lots of testing at the British Gas Research site in Spadeadam, England, after the Piper Alpha disaster. It used full size mock-ups of offshore modules with piping etc. When I get a chance I will dig out one of the videos and post it.