Repair Welding a Live Gas Line on FIRE! | Stick Welding (SMAW)

welcome back my welterweight family once again here rossino rodriguez welding flight duck now we're shooting a collaboration video with sam uh today he's going to be showing us how to do a repair on a live gas line so you don't want to miss out all right what's up welding dudes and dudettes i'm here with a very old gas main this is about a 70 year old gas man it's from the 1950s damn and what you can see here is it's a bare steel mane so this is basically what it looks like when it first comes out of the ground and there's a leak underneath this encapsulation so what we'll do is we'll use a clam shell put it together and we'll weld this seam on both sides both sides while there's an active leak underneath i do want to make a slight disclaimer i'll show you today what i do for informational purposes this is going to be how we do it here not how we do it everywhere so this is what we call a split sleeve or a pumpkin you want to tack it up in such a way that you can spin it on the pipe so i have it loose enough on this main right here to be able to run a good solid root pass in a 1g position but because i have a vent stack on here i'm going to just do a slight tilt i'm going to sit like this i'll have my flare away from me going this way and i'll be running my root pass like this like that i'll tilt it this way switch hands and run my root pass like this shop welding products at weldlife.com durable goods that get the job done all right first strike up trying to get an idea of where my heat needs to be trying to get an idea of where the flare is at obviously it's right under my nose you can see on my left knee i've got my wired remote working that heat on a lot of these split sleeves you'll go from gap tight gap to tight the bevels are just always cattywompus all over the place that section is actually pretty good planning stop always stops and starts grinding coming in here that flare is real close to me the wind is also affecting it which doesn't usually happen holes find a keyhole right there most holes are going to have four sides so you don't have to worry about wind too much so the fire is just going up so this adds an element of extra challenge but i enjoy it it was probably a little too close honestly i i sense the heat a lot of time with my body i can't really see it because i'll wear shades from like a you know a 10 to like a 13. and a lot of time i cannot see the fire at all you can see i'm just trying to get that route in i'm not trying to rush it but i am trying to be efficient i don't want to spend any more time than i have to trying to root it in you don't want to bury the root in there you're just trying to get it sealed i know some of y'all are going to look at that and say oh it looks pretty silly you got that straight piece of pipe coming off the side why don't you do a swing joint well you're right we used to have stuff for a swing joint so right here i'm on my bottom section part that is in contact with the main so i'm not actually trying to build that up too much or root it just trying to get good clean metal on there pretty active flare going so this is the first part of my hot pass and i'm trying to get my toes nice and tight in but i'm also trying to fill to some degree these bevels are pretty thick so i want to fill as much as i can on every pass on this downhill section it's also really important to build up your transition from flat to downhill reason being when you come in with your bigger rods at a higher heat when you get to that downhill portion it's going to want to basically chew into it and that's no good okay on this section you can hear that sound it sounds almost like reverse polarity but what's happening is that is extruded metal so that's this is the way that they make these split sleeves is they use a dye i don't honestly don't know if it's a hot or a cold process but they basically punch them into shapes with a big press and what happens with that is it affects the grain structure and so on these bottom sections like this there's so much internal stress in that grain structure that when you start coming down that bottom it basically relieves the stress in the grain and it causes a wild effect it's really hard to weld sometimes if you've ever welded magnetized steel it's a lot like that if you've ever actually welded reverse polarity it's a lot like that so you have to be aware of that on all these downhill sections sometimes it'll make your arc cut out [Applause] yeah like that but sometimes it's not a problem at all so this right here i'm clearly in a 2g horizontal position sometimes you'll get these encapsulations so hot that the distortion will cause them to suck down onto the main and you'll have a really hard time getting them to move i'll have to break out like a three foot pipe wrench to get them to move so sometimes i just get stuck in 2g but a lot of time you can almost use that to your advantage because you're using gravity and you can use that big puddle to kind of stack even more metal whereas sometimes in flat you're not able to stack as much because your puddle kind of gets too hot at least on these you can kind of step out enough where you can really stack in coming down another bottom section here got 532 coming down sometimes this is just utter chaos but you really want to make sure on these bottoms here that you have good fill on that on that outer edge because it's going to chew it up if you don't [Music] and when you go to tie into the mane you want plenty of metal you basically want it flush with the rest of the split sleeve all right so we're putting in our 316 cap right now i did make a little whoopsie in that i got ahead of myself and got a big head and thought i could cap it not completely flat and if you've ever welded with a 3 16 rod very hard to cap on any sort of 2g ish horizontal way it really wants to sag and you have to move that heat as much as you can and if you get top side too much it'll chew into the top of the bevel and it looks bad so you know rookie moves a little bit i thought i could do it i wanted to do it for the camera but it didn't work out guys you don't look that great i always stop before my downhill section so that i start cold and i can build up that bottom section so see how i'm pretty much flush on that bottom when i'm coming down into that bottom edge so that i don't completely blow it out i always have to wildly oscillate on the bottom of you clean it off [Applause] that's terrible capping the other side starting and see i learned my lesson i was like all right i'm capping this baby flat well that's flat right there you can see the fire isn't nearly as bad now because i have those sides nice and sealed and now they're just coming out the ends so you don't have to worry about it as much lots of cleaning so not the best not the worst it's important on your prep to tie into the main that you get everything really really clean because if you don't on an old main you'll have tons of problems it'll be popping and spitting on you and flakes will be flying off right here i'm wedging the bottom section to where it's flush because if you're going to have a gap on this you want that gap top side so you're not having to fight trying to fill on the very bottom on this there's a little 60 10 quick whip root i'm just trying to fill basically i'm not trying to get actual penetration i just want to fill and my wall thickness on this pipe is basically around 3 16 so i'm comfortable sitting a little longer than usual so on my top side i always leave you probably see it right here yeah i always leave a weep hole top side see how those two welds on either side are split so if i do have a leak i'm leaving it to vent top side while i'm filling everything bottom so that in the eventuality that i have to fight the leak i'm fighting it on the top not on the bottom because that can be real difficult to have to deal with right here i'm putting in a cold fill pass on the bottom side of what will be my 45 degree final weld but i guess you could call it an effective throat for your throat for you guys in weld school so then i'm capping 532 right there i want a nice good flush 45 when i'm finished with that so now i've isolated the leak to that one side and you have to be careful with this i'm keeping my distance a little bit more because when you end up isolating it to a more specific spot it can seem small and then you light up on it and it causes all kinds of problems right here i'm sealing up my weep hole i thought maybe i'd have to fight it sometimes you have to peen it sometimes you have to punch it but this one didn't put on a show unfortunately so putting in another cold pass here i'm just building it up just enough to where when i cap with that 532 on it that i have something that's new clean metal to roll that hot puddle over onto and then i don't have to worry about chewing in to the main and causing problems so there goes that 532 in there on that side 532 on that side and i love bending the rods from eighth inch 332 to 532 i love bending the rods it gives me way more control now here i'm cutting off this vent stack being sure not to chew too much into the split sleeve i don't think i did at all usually i'll try to leave a little meat on top and then just grind it flush on this initial strike up it doesn't show it on this we didn't get it on camera but i will strike up on it just to make sure there's nothing residual left because sometimes it will blow out and it sounds like a little jet turbine taking off the gas escaping out of the encapsulation but i just do kind of a plug weld and then a few stringers and she's sealed all right guys hope that was interesting this is basically how to weld up an active leak on a residential gas line so if you're interested in this sort of thing i'm going to encourage you all to reach out to a company a mentor anything like that i've got my mentor here with me this guy taught me how to weld he's been in the industry for over a decade hey guys i'm stacey with meeks contracting a local welding specialist and we do a little bit of everything carbon steel stainless aluminum pretty much what i would recommend for any of you new guys up and comers get with the company you got to get your knowledge and your experience from somewhere you know if you can find a mentor uh be at hand don't just think you're going to go jump in a truck and roll with it you got to start and put your time in this stuff can be dangerous but there's a safe way to do it company policy and procedure is extremely important so i hope you enjoyed it don't forget to like comment subscribe thanks to the guys at weldtube and we'll see you on the next [Applause] [Music] [Music] you

Channel: WeldTube

Views: 250,756

Keywords: arc welder, mig, pipeline, welding, welder, welding shop, GMAW, SMAW, welding definition, pipe schedule, cwi, how to weld, types of welding, welder salary, welding symbols, schedule, 40, pipe, welding supply store, Tig, welding jobs, welding schools, tulsa welding school, american welding society, weldporn, weld.com welding tips and tricks, ChuckE2009, learn to weld, pipe welding, welding basics, welding techniques, welding test, welding a live gas line, rig welder, hot tie in welding

Id: WbO4A86JzIg

Length: 16min 32sec (992 seconds)

Published: Tue Aug 16 2022