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  1. #21
    Join Date
    Aug 2010
    Location
    Los Angeles
    Posts
    1,163

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    Quote Originally Posted by jrscgsr View Post
    I'll just throw my 2 cents in if the original poster is still alive. My old boss filled a diesel truck gas tank with water to weld a small repair on it, after a couple seconds of welding the tank suddenly ballooned and push him back. The residual diesel on the inside of the tank turned to vapor with the welding heat then ignited despite being filled with water. He was lucky and didn't get hurt, but honestly the only way to safely weld/cut a fuel tank is to use a degreasing cleaner first then purge the tank with a non reactive gas. If I can't do that then I don't work on it.
    Same thing happened to me years ago. Customer swore he flushed out the tank. It knocked me across the shop. Never again without purge.
    Nothing welded, Nothing gained

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  2. #22
    Join Date
    Jul 2010
    Posts
    375

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    Quote Originally Posted by Nathan128 View Post
    It's an oil tank. Oil burns not explodes.
    When oil vapor is at high temperature in the presence of oxygen, trust me – it explodes just fine.

    Oh, and by the way – an oil fire can kill you just as dead as an acetylene fire.

  3. #23

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    Very true.....looks like Nathan got LUCKY.....like many do....some people are too stubborn to listen.....just cause it didn't explode this time doesn't mean it never will. Dave
    Quote Originally Posted by Helios View Post
    When oil vapor is at high temperature in the presence of oxygen, trust me it explodes just fine.

    Oh, and by the way an oil fire can kill you just as dead as an acetylene fire.

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