Abstract: This tank leakage detection system senses at an early stage the failure of a liner membrane made of a non-corroding material such as lead which allows the escape of a corrosive liquid contained within the tank to the space between the liner membrane and the outer steel walls of the tank. The detection system is made up of a small reservoir located on the bottom of the main tank which is in fluid communication with the space in the main tank between the outer steel walls and the liner membrane. The small reservoir extends laterally beyond one side of the tank and has a tubular projection extending upwardly along the side of the main tank which contains a float which is in turn connected via a linkage to a switch which controls an alarm system.

Abstract: An insulating structure for cooperation with an associated electrostatic precipitator having a generally U-shaped member supporting a depending weight. The insulating structure includes a section of a generally planar, generally circular first body which has a depending peripherally disposed flange extending about at least a part thereof and has a slot disposed in the section of the generally planar generally circular first body.