On Tue, 12 Jul 2011 21:37:57 -0500, Ignoramus15459
wrote:

On 2011-07-12, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
"Michael A. Terrell" fired this volley in
m:


It was on the neck. Just a few inches of metal that wasn't under
water. It turned out the inside of the tank was quite rusty, which
wasn't visible before it blew.

Well... "sitting on empty" and "empty, and open to the air" for two years
are two different things.

Exactly.

The tank may have had little usable fuel, but was closed and trapped
the remainder and the fumes.

In my case, the tank is dry, the inlet is open, and I turned the tank
over so that it sits outside, under the sun, with the open inlet
pointing down.

i
Trust me Iggy - it is STILL a potential bomb. What does a CO2 fire
extinguisher refil cost?????
Fill the tank with a shot of CO2 untill you see it flowing out the
top (as a fog). Let it sit, filler up, for a moment, then add a bit
more. Weld with filler up, and new fitting snugly in the hole, and
plugged so the CO2 does not all flow out through the fitting as you
weld/braze/solder.. If the job takes very long - give it another shot
part way through - and you can GUARANTEE you will be here, and in one
piece, the next day.. REmember, CO2 is almost twice as dense as air -
but not NEARLY as dense as you if you weld that tank without taking
"proper" precautions.