Advice on a weld
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  1. #1
    Join Date
    Aug 2019
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    S. Central Wisconsin
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    Advice on a weld

    I am going to weld a couple brackets on my RV steps to bolster them a bit. I am new to welding and after posting an after of my last project, I got a lot of creative criticism on it. Thanks all. I am learning. Anyway, I am not so much after actual welding advice but safety this time. Since the RV has a propane line running under the cabin via steel pipe, do I have to worry about it at all. I plan to remove the tank and then purge the lines before I start welding and the line would be a good 2-3 feet from my weld area.

    Is there anything else I should do before welding to make sure I dont go boom?

  2. #2
    Join Date
    Nov 2012
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    Groves, Texas
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    2,646

    Re: Advice on a weld

    2 to 3 feet, I wouldn't worry about it. Just don't burn through the propane line with your arc and you'll be fine. Guys weld around pipes with explosive stuff in them all the time in refineries. Put your ground clamp as close to your weld as you can, within reason.

  3. #3
    Join Date
    Aug 2018
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    121

    Re: Advice on a weld

    Also I would use a welding blanket to drape on and around the propane line(s) to prevent any sparks. It doesn't hurt to be safe..
    Welds last longer than Love...

  4. #4
    Join Date
    Dec 2018
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    Southern California
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    Re: Advice on a weld

    I usually just purge them and plug any open ends (don't want any foreign material in there to clog things up) that may be exposed to welding debris (sparks, bbs, metal dust, etc). 2-3 inches shouldn't be a problem IMO

    Keep work/ground clamp near where you are welding.

    A welding blanket (fiberglass) is good extra safety as eventually propane lines/tanks get a nice coating of petroleum (flammable, possibly explosive - especially when heated) sludge inside, but to be honest I rarely use one welding around (empty! and open) propane lines unless I am so close I'm afraid I might arc up on the pipe itself.

    Remember propane is heavier than air so it will pool in low spots.

    Congrats on the new tool and hobby, welding opens up a whole new world and it's never been better to be a beginner. Machines are cheap/good and youtube is free school if you can wade through the bad info.

    Also, as a weldor you'll now have to stop and inspect EVERY weld you come across (talking trash is now mandatory), and many of those will give you nightmares as you realize much of the world is held together by some shoddy welds!

  5. #5
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    Nov 2012
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    Groves, Texas
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    Re: Advice on a weld

    He said 2 to 3 feet.

    Why does he need to purge the propane line, he's not welding the bracket to it, is he? Me personally, I would not do anything at all with the propane, as long as it's not spewing gas in the weld area.

  6. #6
    Join Date
    Dec 2018
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    Southern California
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    Re: Advice on a weld

    He doesn't, really. But I would do it as it's quick/cheap insurance. I wouldn't purge and fill with inert gas or anything fancy, just clear the propane out to keep my inner hank hill happy. You're right though, it is pretty much overkill in this case.

  7. #7
    Join Date
    Dec 2018
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    Southern California
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    584

    Re: Advice on a weld

    Kind of reminds me of unplugging advice. Everyone tells everyone else to unplug things when working on them or changing a blade/accessory, but how often do you REALLY do it? Lol I know i'm guilty as sin in that department!

  8. #8
    Join Date
    Aug 2019
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    S. Central Wisconsin
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    26

    Re: Advice on a weld

    LOL: Thanks guys. I think I have a game plan now. Pretty much what my original intentions were. I just didn't want to be "That guy".

  9. #9
    Join Date
    Mar 2011
    Location
    Western Washington
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    3,861

    Re: Advice on a weld

    Quote Originally Posted by esox07 View Post
    LOL: Thanks guys. I think I have a game plan now. Pretty much what my original intentions were. I just didn't want to be "That guy".
    You don't want to get your 15 minute of fame on the TV ????

  10. #10
    Join Date
    May 2019
    Posts
    31

    Re: Advice on a weld

    Good luck esox07!

  11. #11
    Join Date
    Jan 2004
    Location
    Brethren, Mi
    Posts
    719

    Re: Advice on a weld

    More dangerous messing with it.

  12. #12
    Join Date
    Jun 2012
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    Bemidji MN
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    14,044

    Re: Advice on a weld

    Quote Originally Posted by TimmyTIG View Post
    He said 2 to 3 feet.

    Why does he need to purge the propane line, he's not welding the bracket to it, is he? Me personally, I would not do anything at all with the propane, as long as it's not spewing gas in the weld area.
    I'm with you. I wouldn't think twice about welding that far away from a metal line of propane.

    Plus, many people "purge" with air...an efficient way to make an explosion if ignited after.
    Dave J.

    Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~

    Airco 300 - Syncro 350
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    Tried being normal once, didn't take....I think it was a Tuesday.

  13. #13
    Join Date
    Mar 2011
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    Western Washington
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    Re: Advice on a weld

    Yeah, 2-3 feet should be more than enough... I mean it's not like you're welding and have open flames near a service like me...

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  14. #14
    Join Date
    Dec 2018
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    1,715

    Re: Advice on a weld

    So...………….that was that ball of fire I saw on the NW horizon some time back Have yer eyebrows grown back yet???????????????? Oh, you pesky PNW guys

  15. #15
    Join Date
    Mar 2011
    Location
    Western Washington
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    3,861

    Re: Advice on a weld

    Lol, yeh it was kinda hot!!! For a second... Glad I learned the drop and roll routine a long time ago has worked a few times ��

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