In article ,
Earl wrote:

Rob said his tank had developed a leak. That would mean that there had
been gasoline in the tank. I don't think anyone would suggest welding
a used metal tank, how could it be any safer with a plasic one?


Steve in Michigan

Actually, it is quite safe -- if done right. I have done this several
times.

1. Look up "Dry Ice" in your Yellow Pages.

2. Get the smallest amount they will sell you (usually about 5 lb.)

3. Put it in the tank and let sit for about 1/2 hour.

The dry ice (CO2 no thanks to Al Gore) displaces smothers the oxygen
from the tank and will not support combustion.

The nice thing about dry ice is that it leaves no residue, unlike
filling the tank with water