Figure 4. Proposed Tank System Vapor Space Connection and Side View
A liquid draw option is not shown in the images. A liquid draw would require a tube similar to the tube shown for the fluid level sensor equipment guide. The line would need to connect the valve and enter the tank to a suitable depth.
A gusset system is shown in the images. The gusset is provided to stabilize the riser relative to the tank. The primary use for this gusset is to reduce the risk of damage at the tank to riser interface during transport. This gusset could be removed or remain for burial in the ground.
The standard method for monitoring fluid level is the use of a float. Due to the orientation of the riser in the proposed system, a standard float system will not work. Several alternative approaches currently under investigation are listed in Table 8. None of the options investigated currently provides an off-the-shelf solution.
Alternative Underground Propane Tank Materials, Phase II—Final Report
September 2009 Battelle and Lincoln Composites