Full tank has no room for vapors. Gasoline needs to be in a vapor state, and
the proper(16 to 1 seems to come to mind) air/fuel ratio to explode. So,
consequently, welding a filled tank would be feasible. But, that being said,
it would also be stupid- Gas vapor venting out the cap as you weld, or the
crack being welded, etc, might ignite- not explode. Then what do you do? Put
it out or let it burn? Let it burn- it is already burning off the vapors- so
they can't gather. But what about when the flame sucks back into the tank
once the fuel level drops due to consumption? Hopefully, you will have
finished long ago, and then extinguished the flame...
Again- just the points in comparison for you guys- but get a professional to
do any repairs of this nature for you- they should have the insurance to
cover repairs caused by their stupidity- you most likely would not be
reimbursed by an annoyed insurance company!
Scott
(Who learned about burning gases in Firefighter school many years ago)
----- Original Message -----
From: "francois wildi" <fwildi@yahoo.com>
To: <triumphs@autox.team.net>
Sent: Thursday, October 16, 2003 9:14 AM
Subject: Re: LBC Humor
> Talking about that tank welding joke, the old Alfa mecanics who
> taught me all the basics over a decade ago mentionned that welding a
> gas tank with the gas inside was an accepted practice back in the
> 60's. It was done by those who did not want to take the time to empty
> it and fill it with water instead. The tank as to be a full as
> possible of course.
> Those who know "Queuqueu" will confirmn that he is the typical
> no-nonsense it-must-be-done-right Swiss mecanics and he cannot be
> accused of being light with good shop practice. This is maybe why he
> never did it himself...
>
> Have we become wimps?
>
> Francois
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