Acetylene bottle in an SUV, All welders need to read this Options

[URY914]

This is reposted from another forum.....

Quote "So my time almost came to an end this morning... im very lucky to be alive.

First of all, GO HUG YOUR WIFE/HUBBY and tell them you love them.

i had an acetylene bottle in my truck, the valve was bumped so slightly and over night the truck filled with the gas. i noticed the smell, and opened the doors to air out the truck. i drove the truck out of the garage to get some more air movement. i went to roll the pass side window down and as soon as i touched the power windows. BAM. with me in the truck. i lost all hearing out of my right ear and got a scratch on the back of my head. all things considering, im alive.

so now ive got the question out to toyota about a 2012 TT. 125 to canada only, 15 in standard. i want a standard...

pictures tell 1000 words.

dont take any minutes or seconds you have for granted... it may be your last...

peace everyone,"

[scotty b]

you guys seem to be focusing on the soot when ignited. My point is look at the internal parts of the truck. Not in a soot marked way, but in the assumption that there was an exlposion creating a fireball, and NOTHING got melted or burned ??? This would lead me to believe there was no " ignition " it was a concussion " explosion" so what would have cause the gas trapped in the truck to have expanded so rapidly yet not ignite ?

[Richard Casto]

you guys seem to be focusing on the soot when ignited. My point is look at the internal parts of the truck. Not in a soot marked way, but in the assumption that there was an exlposion creating a fireball, and NOTHING got melted or burned ??? This would lead me to believe there was no " ignition " it was a concussion " explosion" so what would have cause the gas trapped in the truck to have expanded so rapidly yet not ignite ?

There was a recent Mythbusters episode where they looked at "flying manhole covers" due to sewer explosions. They showed that you had to get the optimal mixture of air to methane to get a real explosion. They also showed how various factors could impact if it was a burn or an explosion. In a burn, the flamewall boundary doesn't move at a very high speed. For example it might be moving slower than the shock wave.

Here is the video for the small scale test in which you can see how the flamewall boundary moves, but not as fast as the shockwave (which blows the covers off before the flame gets there. The video stops before they show it, but they showed that oddly enough, when they added obstructions it actually increased the speed of the flamewall.


https://www.youtube.com/watch?v=DokeJj0pxPw


Based upon how the body panels are pealed off, and how they showed that obstructions helped speed up the flamewall boundry I am thinking that he had a detonation (or at a minimum a very fast burn) within the interior cavities of the car. And that unfortunately he must have had a relatively optimal air/fuel mixture.

Richard