Jim Stewart wrote:
Nick Hull wrote:

In article SJPOe.1366$N22.1122@trndny07,
"Jon Grimm" wrote:


We've also use the exhaust from a portable generator =)


Ken Sterling (Ken Sterling) wrote in message
...

I need to make sure it won't explode and was thinking about
letting it sit in the sun open for a few days then fill it
completely with water. Any other ideas?

I've used the exhaust port from a shop vacuum piped into the tank
and just let the vacuum run until you're done welding. Moves
enough air that there is no build-up of fumes..... I've also used
water on smaller lawn mower type tanks.


My father welded many truck fuel tanks; he filled them completely
full and had an assistant with a fire extinguisher put out the
inevitable fire. Never an explosion.

Full of what? Please don't say gasoline...

I suspect that is what it was.
I have seen it done - welding on a full gas tank.
as was said - with a TRUSTED assistant standing by with a fire extinguisher
to put out the flaming welder.

Ken.