Your post may save either you or others life. This is a good reminder to anyone that attempted to repair fuel tank and post every now and then.
To whoever wants to weld a fuel tank via sparking devise or welding torch is to remember this…Those that didn’t live or badly injured is not able to be on this post to tell you about their stories.
I happen to be fortunate to be here to tell you my story. One day in my teen, my dad’s combine engine’s gas tank soldered seam on top of tank was leaking. I decide to remove it from the combine to flush it with hot soapy water. Twice I did that and hot water rinses it well but still smell gas fume. So I fill it water to almost to the top…about 1/2″ below the seam. Heated my solding iron via blow-torch which was on my right side about two feet from tank. Using acid-cord solder and iron to heat seam hot enough to melt…all of sudden…the next thing I know it went boom and learn later the seam is now ripped open. I smell hair burned and my eye brow was falling like a dust and hair was torched. That is when I learned it was an explosion I have just experienced. I think I was wearing glasses then to save my eyes from hot solder or whatever. Praise the Lord!
About purging tank…While working at GM Tech Center in Warren, MI…they use chemical to rid of combustible mixture with compress air for about 45 minute. Then have the security officer to probe check for combustible fumes to give an OK tag for welding. Back than, the only way to safely say it non combustible for repairing work or for storage purpose.
Every time I read the post about to live tell you “it work me”…it make my cringe think that it has not happen to them….yet.
Here one who lost his friend.Welding on gas tank
from the Hotrodders Bulletin Board
Suggest using Lin’s suggestion or any non spark or torch weld method.
Or like what muddog16 suggested....Welding on a fuel tank of any size or type should be left to a professional!
Sojourn for Christ, Gerald