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Old 01-28-12, 02:30 PM   #1
bman2112
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Little Lesson concerning acetylene from an FJ Owner

Got this on another forum, pics in the link. Keeps acetylene tank in vehilce, smelled gas from garage and vehicle, aired out both for a while, started FJ backed out garage, hit the window button and "BOOM".

http://www.toyota-4runner.org/5th-ge...-fj-owner.html

So here's the full story in his own words that he posted on CT4WD:

"Im a journeyman plumber by trade and a 5 cubic foot 'B' tank of acetylene is an extremely common tool within the trade. At the end of the day the tank gets put in the back of the truck like everything else and forgotten about. Well it was moving around and bumped the key that shuts the main valve off. It slowly leaked overnight. i walked into the garage i could smell the gas, i opened the big door to air it out, then i opened the truck and wow it was overwhelming. i aired the truck out for 5 minutes and when i felt the truck was cleared out enough i fired it up and drove it out to the alley. i wanted to roll the pass window down to get a breeze for the way to work. the instant i touched the window button, everything went orange and i was pinned to the seat by the airbags.

It was the fuel within the doors and fenders and under the console that didnt get aired out before that i didnt think about. Acetylene is much heavier than air and has a flammability % of 2.5 to 82%. by comparison natural gas is 5 to 15%.

i lost my hearing in my right ear and got a bump on the back of my melon. im very grateful to be alive, and the lesson learned is to NEVER be complacent about the little stuff.

Tie your bottles up correctly for transport, and do not store them overnight in an enclosed area.

Im not embarrassed or mad about the issue or story getting around, quite the opposite actually. I hope someone sees this and learns about the dangers of flammable gasses in an enclosed space.

As far as the fj goes I settled already with the insurance and am in the process of ordering a 2012 TT 6M. There are only going to be 125 TT total for canada, 15 manuals only. im going to have one."
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Old 01-28-12, 03:51 PM   #2
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I have a certain sense of deja-vu here.

http://www.bikeforums.net/showthread...ight=acetylene
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Old 01-28-12, 03:56 PM   #3
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First rule of transporting and storing liquid or compressed gas cylinders: SECURE YOUR TANKS.
I learned it from my father as a little kid, going with him to get our LP tanks filled for the grill.
It was reinforced in my SCUBA classes.
It was reinforced again when I took a laboratory job involving CO2 and N2 tank exchanges.
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Old 01-28-12, 04:23 PM   #4
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I have a certain sense of deja-vu here.

http://www.bikeforums.net/showthread...ight=acetylene
I fail, didn't realize this happened last year.
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Old 01-28-12, 05:09 PM   #5
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I fail, didn't realize this happened last year.
So what? I missed this previously, and those pics are awesome! Good reminder too.
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Old 01-28-12, 05:36 PM   #6
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What a waste of perfectly good acetylene.
That stuff can be lots of fun..it's heavier than air. You can take a metal coffee can, poke a few "air mixing" holes around the lip, fill it with acetelyne, turn it upside down.....back away and toss a match. I've seen an estimated 100ft launch.
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Old 01-28-12, 05:43 PM   #7
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What a waste of perfectly good acetylene.
That stuff can be lots of fun..it's heavier than air. You can take a metal coffee can, poke a few "air mixing" holes around the lip, fill it with acetelyne, turn it upside down.....back away and toss a match. I've seen an estimated 100ft launch.
Cool! I want to see the video!
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Old 01-28-12, 05:45 PM   #8
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Cool! I want to see the video!
What video?
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Old 01-28-12, 05:53 PM   #9
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What video?
The one you'll shoot later tonight after you've had a few.
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Old 01-28-12, 05:54 PM   #10
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What video?
Uh...a video of the 100ft launch.
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Old 01-28-12, 06:08 PM   #11
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Uh...a video of the 100ft launch.
what video?
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Old 01-28-12, 07:53 PM   #12
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Tires held up pretty good.
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Old 01-29-12, 12:04 PM   #13
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I wonder if that happened to bikes in the old days when they used carbide/acetylene lamps?
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Old 01-29-12, 04:07 PM   #14
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Reminds me of that nitrous-tank explosion in a guy's garage a couple years back.
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Old 01-30-12, 08:45 AM   #15
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A few years back some locals filled a bunch of ballons with an explosive gas for a 4th of July celebration. I think it was acetylene. Then they stuffed them into the back of their car and took off. At some point during the trip a spark caused by friction set them off. I believe they survived but it blew out the windows on their car.
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Old 01-30-12, 10:37 AM   #16
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This is just another argument in favor of hand-operated window cranks.
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