The previous few comments is why I asked about impressed current cathodic
protection. Hard for me to imagine an underground steel tank full of LPG
without a system. Certainly if the tank rusted through the vapor would most
likely vent to the surface near the tank. However, there is too much
possibility that the vapor would travel along the supply line to the
residence for me to want to do it.

For liability reasons I suspect Harry's gas supplier has at least some kind
of sacrificial anode protection installed on the tank. Perhaps there is a
requirement to remove and inspect the rented tank at some interval? Or
perhaps they are simply changes out every 10 or so years???

Butch
"Eisboch" wrote in message
...

"Calif Bill" wrote in message
link.net...



Problem at Tahoe and the sierras when it snows and if a pipe leaks, it
travels under the snow to the house, and causes major noises and heat.
May be the same problem with a tank underground.


That may be it. I know in Florida they permitted tanks to be buried.

Eisboch