Jim and others---
Here are the answers to the questions raised by Jim Fruit in the post above...see if you can provide me with more specific answers (guidelines) regarding the separation between the propane tank and oxidizer.
1) The primary fuel is gasoline vapor extracted from the soil by a vacuum pump. I don’t know what impact this might have on any codes.
2) The oxidizer operates at 1,700 degrees F. It is well insulated, so the temperature of the outside surface is usually less than 150 degrees.
3) The tank pressure probably depends on the ambient temperature. The pressure of the delivery piping should be about 5 psi.
4) A person can stand next to the oxidizer without any problem, so I don’t believe the radiant heat will have any effect on the tank valves, relief devices, and piping. I believe the summer sun will have a greater effect.
5)The oxidizer will have to be permitted through the Air Pollution Control District, so it will meet their emission standards.
I want to minimize the distance between the oxidizer and propane tank, but the local jurisdiction Building Official and Fire Marshal are not able to provide guidance regarding the separation they are looking for.