welding on gas tanks - Page 3 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> General Rodding Tech
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #31 (permalink)  
Old 02-12-2011, 03:28 PM
OneMoreTime's Avatar
Hotrodders.com moderator
 
Last wiki edit: Health and safety in the shop or garage
Last journal entry: Yard Dog pic
Last photo:
Join Date: Jul 2004
Location: Washington State
Age: 69
Posts: 7,389
Wiki Edits: 3

Thanks: 54
Thanked 154 Times in 144 Posts
If I ever have to fix another gas tank I will use vinyl ester resin and layup a fiberglass covering on the tank..that material is used to make fiberglass fuel tanks for boats and undrground fuel storage tanks..that way i get the shape and size i need and a good tank..

Sam

    Advertisement
__________________
I have tried most all of it and now do what is known to work..
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #32 (permalink)  
Old 02-12-2011, 03:44 PM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,912
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
Quote:
Originally Posted by 35terraplane
When I put my post on this a few posts back, I sure wasn't telling anybody to go ahead and do it. I can weld, but I would not do my own. There are places that know how to do it, let them. We can discuss this until the cows come home and won't get anywhere.
I had a buddy, that would weld railroad cars that carried things that went boom. He would not think twice about getting into one and welding, he was inside. It can be done but let the people that know how do it, it doesn't work for them all the time either.

Bob


Healthy is merely the slowest possible rate at which one can die.


I think maybe there has been a major misunderstanding here, I know a gas tank can be safely welded and there are several ways of doing so-I have welded a heck of a lot of them my self in the past 35 years or so. The point I have been trying to make is that purging with exhaust, ANY kind of engine exhaust, can be even more deadly than the tank contents sometimes. If I got a bit carried away and offended anyone by bringing up the exhaust when the tank contents were the subject then I certainly want to apologize but that exhaust trick is something I can never forget and is something of a touchy subject for me. I know for a fact purging with exhaust is very dangerous but sometimes in the past I have met people who simply will not believe it, although I don't remember that being the case here and I am not talking about anyone here I am talking about people I have dealt with in the past in the repair business. Purging with CO2 was mentioned and that does work quite well for both gasoline and diesel tanks and is an accepted way of doing this, BUT it must be done properly and by someone who understands doing it. There are many ways to do this safely and some ways that are common and not so safe but I think that most people, who if they had witnessed the accident that I saw, would better understand why I get so carried away when this subject comes up-it is something I will never forget and never give up trying to prevent when the subject comes up.
Reply With Quote Quick reply to this message
  #33 (permalink)  
Old 02-12-2011, 04:08 PM
35terraplane's Avatar
Registered User
 
Last photo:
Join Date: Sep 2010
Location: MN, ON THE DARK SIDE OF THE MOON
Age: 70
Posts: 1,327
Wiki Edits: 0

Thanks: 2
Thanked 61 Times in 52 Posts
welding a gas tank

Quote:
Originally Posted by oldred
I think maybe there has been a major misunderstanding here, I know a gas tank can be safely welded and there are several ways of doing so-I have welded a heck of a lot of them my self in the past 35 years or so. The point I have been trying to make is that purging with exhaust, ANY kind of engine exhaust, can be even more deadly than the tank contents sometimes. If I got a bit carried away and offended anyone by bringing up the exhaust when the tank contents were the subject then I certainly want to apologize but that exhaust trick is something I can never forget and is something of a touchy subject for me. I know for a fact purging with exhaust is very dangerous but sometimes in the past I have met people who simply will not believe it, although I don't remember that being the case here and I am not talking about anyone here I am talking about people I have dealt with in the past in the repair business. Purging with CO2 was mentioned and that does work quite well for both gasoline and diesel tanks and is an accepted way of doing this, BUT it must be done properly and by someone who understands doing it. There are many ways to do this safely and some ways that are common and not so safe but I think that most people, who if they had witnessed the accident that I saw, would better understand why I get so carried away when this subject comes up-it is something I will never forget and never give up trying to prevent when the subject comes up.
I know just what you were talking about, I took your posts as let those that do it, do it. Don't go by some wifes tail, give it to the pro's.
I was just saying as far as myself that's what I would tell someone. I don't want to know how they do IT because I might just get one wild hair up my A-- to try it, and I can barley walk on earth, let alone the moon.

Bob

Who was the first person to look at a cow and say, 'I think I'll squeeze these dagly things and drink whatever comes out?'
Reply With Quote Quick reply to this message
  #34 (permalink)  
Old 02-13-2011, 07:55 AM
adantessr's Avatar
'23 T-Bucket Pickup
 
Last wiki edit: Troubleshooting ignition Last photo:
Join Date: Jun 2010
Location: South Charleston , WV
Age: 62
Posts: 1,549
Wiki Edits: 3

Thanks: 43
Thanked 17 Times in 15 Posts
I repaired a leaking gas tank on my '78 K-10 by removing it and washing it out and then repaired with fiberglass cloth and resin. As far as welding fuel tanks, we were able to obtain the recommended and accepted procedure from MSHA, which invloved using CO2 and and an O2 meter to make sure that there wasn't enough oxygetn present in the tank to support combustion. The ONLY safe way to do it, no matter what others may have gotten by with.
Reply With Quote Quick reply to this message
  #35 (permalink)  
Old 02-13-2011, 08:54 AM
matts37chev's Avatar
I don't understand?
 

Last journal entry: this is only a test
Last photo:
Join Date: Jan 2009
Location: Shelton,Wa.
Age: 45
Posts: 2,420
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
Quote:
Originally Posted by adantessr
I repaired a leaking gas tank on my '78 K-10 by removing it and washing it out and then repaired with fiberglass cloth and resin. As far as welding fuel tanks, we were able to obtain the recommended and accepted procedure from MSHA, which invloved using CO2 and and an O2 meter to make sure that there wasn't enough oxygetn present in the tank to support combustion. The ONLY safe way to do it, no matter what others may have gotten by with.
the industry standard for prepping/cleaning gas tankers is to use steam.
you put steam hoses in them for about 4 hours, then check them with a sniffer.
we have used co2 in a mobile repair type scenario
Reply With Quote Quick reply to this message
  #36 (permalink)  
Old 02-22-2011, 05:32 PM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Morris update 9-28-2014
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,104
Wiki Edits: 1659

Thanks: 343
Thanked 103 Times in 99 Posts
Quote:
Originally Posted by oldred
You had no more problems because you had already burned what gas was in the tank, what you did then was take a non-problem and created one by adding the exhaust although exhaust in a tank that small was probably not very dangerous.
I completely disagree with your assessment, I did not create a problem with diesel fumes. I stopped one
__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #37 (permalink)  
Old 02-22-2011, 09:03 PM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,912
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
Quote:
Originally Posted by Crosley
I completely disagree with your assessment, I did not create a problem with diesel fumes. I stopped one

No you did not and people have been killed by doing that, I personally saw it happen! There have been many cases of this happening and after being in the welding/equipment repair business for over 35 years I know of several tank/exhaust explosions with at least three that were being purged with diesel fumes including the one that caused the fatality. Do as wish but that stunt is dangerous, very dangerous and just because you got away with it does not make it safe. Most of the time it works, just depends on the mixture, and that is why some people still do this but it only takes once to cause a serious accident. You most certainly did create a more hazardous situation and past accidents along with just plain common senses bear that out, believe what you like but most people know better and getting on here and pointing at the one you got away with will not change that!
Reply With Quote Quick reply to this message
  #38 (permalink)  
Old 02-24-2011, 09:20 PM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Morris update 9-28-2014
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,104
Wiki Edits: 1659

Thanks: 343
Thanked 103 Times in 99 Posts
Quote:
Originally Posted by oldred
No you did not and people have been killed by doing that, I personally saw it happen! There have been many cases of this happening and after being in the welding/equipment repair business for over 35 years I know of several tank/exhaust explosions with at least three that were being purged with diesel fumes including the one that caused the fatality. Do as wish but that stunt is dangerous, very dangerous and just because you got away with it does not make it safe. Most of the time it works, just depends on the mixture, and that is why some people still do this but it only takes once to cause a serious accident. You most certainly did create a more hazardous situation and past accidents along with just plain common senses bear that out, believe what you like but most people know better and getting on here and pointing at the one you got away with will not change that!

I have used the diesel fume in the tank many times. No problems.

I've used dry ice too. Too hard to find the dry ice, diesel fumes are close

i disagree with your assessment of the way I repair tanks, it works for me. I did not create a dangerous situation, it worked fine many times

__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #39 (permalink)  
Old 02-25-2011, 03:30 PM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,912
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
Quote:
Originally Posted by Crosley
I have used the diesel fume in the tank many times. No problems.:

Like I said it does work most of the time BUT just like several very dangerous things some people will do it sometimes does NOT work and then you and possibly others around you could be in a world of hurt!


Man think about what you are doing! Those fumes are explosive, all they need is the proper air mix and you have little control over that. Like I have said several times the reason I am so adamant in my condemnation of this practice is what I have seen happen! You are insisting that what you are doing is safe and are telling others it is safe and you are doing this based on getting away with it a couple of times.


Crosley I saw a man burned to death doing this stupid stunt, by the time the fire was quenched and we got the ambulance to him he was alive and talking but burned so badly all he had left on his body was a few tatters of clothing and his boots and belt. Every time this has come up I would not go into details of this accident out of respect for this man but you are insisting that what you are doing is safe when it absolutely is NOT and I intend to warn others whenever and where ever I can. Do what you wish to yourself but don't come on here and tell others it is safe, I know better and so does most everyone else but I guess some just won't learn until it is too late. You can preach that procedure is safe till doomsday but I know of at least the 3 tanks I have already mentioned that exploded using diesel exhaust, one exploded violently and caused the fatality but the other two were fairly minor and resulted only in swelling of the tanks and no one was hurt. If what you think is safe then how the hell could that new tank explode when it had never had anything in it BUT diesel exhaust? Continue insisting this nonsense if you like but peoples' safety is at stake here, doing that is extremely dangerous and telling others it is OK is being extremely irresponsible!



Fellows this is an emotional subject for me and I have come on pretty strong about it in the past but it is not because I am trying to be a sm@^#***** or know-it-all. I have seen with my own two eyes the results of doing this stunt and I know of it happening in other cases with only minor results, still even those could be considered close calls. Welding on gas/fuel tanks is a common problem in our hobby and was very commonly done in my line of work so that is why I was aware of the incidents I have mentioned. I might come on a bit strong over this one but my gosh I know what can happen and it really gets too me when someone comes here and tells others doing something this dangerous is safe. I will continue to try and pass on what I know for a fact about doing something that could be tempting for someone to try, it is certainly not my intention to insult anyone but the dangers of this procedure are real and the results could be deadly. Let's just be safe and not take chances and fellows a gas/fuel tank can be a big risk, there have been many people hurt and even killed trying to repair these things so don't let it happen because of an old "urban legend" method luring you into doing something you might later regret.

Last edited by oldred; 02-25-2011 at 03:59 PM.
Reply With Quote Quick reply to this message
  #40 (permalink)  
Old 02-25-2011, 04:31 PM
35terraplane's Avatar
Registered User
 
Last photo:
Join Date: Sep 2010
Location: MN, ON THE DARK SIDE OF THE MOON
Age: 70
Posts: 1,327
Wiki Edits: 0

Thanks: 2
Thanked 61 Times in 52 Posts
welding gas tanks

I went to a lot of Forums trying to find an answer, everyone had about the same answers. Some said use this or use that no problem,I have done it many times. Others would say those methods aren't safe do it this way or that. So in the end I didn't find out a damn thing. But a lot of pro-welders would say wash it out, then fill it with a inert gas to purge, like CO2 or argon.
Me well I'm going to take it to the guy farthest from home that will do it, drop it off and go back home, wait for a call, if I don't get one I will order a new tank, because the old one might be on the moon.

Bob
Reply With Quote Quick reply to this message
  #41 (permalink)  
Old 02-25-2011, 04:39 PM
001mustang's Avatar
Registered User
 
Last photo:
Join Date: Dec 2008
Location: TN
Posts: 792
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Jim Rockford
Bunch of sissies. Good thing our forefathers wheren't a bunch of scared wussies, scared to take a chance on something unknown or dangerous, otherwise we would still be roaming around in the dark scared of every little noise. This country was built on people being adaptive and doing what it took to get the job done, Now accountants and lawyers and ***** *** government agencies have neutered this country so much we can't even fix our own car without having to buy a new part cause someone says its dangerous to rebuilt or repair something, Man up and get your balls out of your wifes purse.
too funny..
sad but true.
we would not be roaming at all. if our forefathers had been wussies they would not have been survivors of the fittest. thank you forefathers for being strong.

Don't try this at home....you will die....My gas tank was repaired by a good ol boy mechanic who ran car exhaust through tank while soldering neck back on; he used this procedure his whole life...don't try this at home...you will die.
Reply With Quote Quick reply to this message
  #42 (permalink)  
Old 02-25-2011, 04:46 PM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,912
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
When asked how this is supposed to be safe the reasoning usually goes that the exhaust is already burned "dead air" and can not burn again but that reasoning is seriously flawed! Exhaust gas, even diesel, is nowhere near 100% burned during combustion in an internal combustion engine, if it was we would be getting a great deal more power and mileage that we do. I don't know the exact percentage of the fuel that is burned but it is actually less than 50% and under the right conditions that exhaust gas can most certainly be made to explode.The fumes coming out of that tail pipe are not all "dead gases" that have already been burned once and thus can not burn again as the urban legend would have some believe and they do indeed have enough unburned fuel to explode violently when mixed with air and concentrated under the proper conditions.

DON'T DO THIS IT CAN KILL YOU!
Reply With Quote Quick reply to this message
  #43 (permalink)  
Old 02-25-2011, 04:50 PM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,912
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
Quote:
Originally Posted by 001mustang
too funny..
sad but true.
we would not be roaming at all. if our forefathers had been wussies they would not have been survivors of the fittest. thank you forefathers for being strong.

Don't try this at home....you will die....My gas tank was repaired by a good ol boy mechanic who ran car exhaust through tank while soldering neck back on; he used this procedure his whole life...don't try this at home...you will die.



And the fact I did see a man killed doing this is totally lost on you? This is no joking matter, it does and has happened and that doesn't mean anything to you?

Fellows this is REAL, getting burned to death is no joke what the hell is wrong with you?

Last edited by oldred; 02-25-2011 at 05:02 PM.
Reply With Quote Quick reply to this message
  #44 (permalink)  
Old 02-25-2011, 04:55 PM
Member
 
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,912
Wiki Edits: 0

Thanks: 0
Thanked 7 Times in 7 Posts
Quote:
Originally Posted by 001mustang
Don't try this at home....you will die....My gas tank was repaired by a good ol boy mechanic who ran car exhaust through tank while soldering neck back on; he used this procedure his whole life...don't try this at home...you will die.


I mentioned a fellow a few posts back in this thread that was a "good ol boy" mechanic for many years, I would give anything if you could talk to this guy after he did that on that Jeep gas tank! This fellow is kind of hard to look at with the scaring on his face and arms.

But you will joke about it?
Reply With Quote Quick reply to this message
  #45 (permalink)  
Old 02-25-2011, 05:03 PM
001mustang's Avatar
Registered User
 
Last photo:
Join Date: Dec 2008
Location: TN
Posts: 792
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
only thing i know is my tank did not explode when he repaired it on that day.

i have too admit...i backed off when i watched him solder my tank.

i did mention not to try this at home.

don't complete the fire triangle...you will die.
Reply With Quote Quick reply to this message

Recent General Rodding Tech posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Welding Used Gas Tanks Quinte Hotrodding Basics 11 04-21-2009 08:02 AM
Butt welding vs Spot welding 69ChevelleAddict Body - Exterior 19 05-04-2008 01:47 AM
old gas tanks knighthawk Hotrodding Basics 8 04-26-2007 07:45 AM
Gas tanks chrisflock Hotrodding Basics 5 11-02-2006 01:08 PM
gas tanks 38 special General Rodding Tech 14 09-30-2003 05:52 PM


All times are GMT -6. The time now is 12:16 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.