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Topic: Safely starting up a neglected torch... help!  (Read 707 times)
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Joined: 23-May-2004
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« on: May 22, 2008 10:18:06 AM »

OK, so some years ago, I got into jewelry fabrication, and got a nice torch setup in my dad's garage.  it's an acetylene/air torch (http://www.littletorch.com/silversmith.html)  I picked up a tank of acetylene from a local welding supply place (B-size tank, 40 cu ft. if I remember correctly)  I used maybe half the gas, then left home for college.  When I came home for summers, I worked full time, and didn't have time for torch work.

So now, about 5 years later, that tank is still in my dad's garage, half-full of acetylene.   I'm a little afraid of it now, after neglecting it so long, since it IS a pressurized tank of flammable/explosive gas.  Is it safe to start using this tank and torch again?  How do I go about checking it safely to make sure everything is in working order?  It has been stored upright, off the ground, and protected from being struck or otherwise damaged.  if it isn't safe to USE the gas, what do I do with it?  bleed it off, or bungee it to the passenger seat of my car to take it back to the welding supply place?

also: I did not previously have a flashback arrestor, since my teacher said they were mostly for fuel/oxy torches, and that acetylene/air was safer, unless the tank was almost empty.  I'm planning on picking one up as it is, but I was just wondering wether he was right.  all the info I'm finding about them online is geared for fuel/oxy.

I know I tend to be paranoid, but this is something it's probably justified for.  thanks for any help!
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