초록 ▼

A dual containment pipe system suitable for installation into an existing conduit includes an impervious containment pipe adapted to be installed as a primary containment pipe and a crush-resistant and flexible spacer element disposed about the entire external circumference of the primary containmen

A dual containment pipe system suitable for installation into an existing conduit includes an impervious containment pipe adapted to be installed as a primary containment pipe and a crush-resistant and flexible spacer element disposed about the entire external circumference of the primary containment pipe. The annular spacer is formed of a plurality of spaced apart and parallel substantially crush-resistant longitudinal members with a plurality of spaced apart parallel flexible connecting ribs bonded thereto. The longitudinal members form a uniform space when the containment pipe suitable for installation of leak detection systems including cables or based on measuring pressure differentials. The new impervious primary containment pipe may be cured in place, folded and formed, diameter reduced pipe, or any other pipe suitable for pipeline rehabilitation.

대표청구항 ▼

[ What is claimed is:] [1.] A method of installation of a dual containment pipe system into an existing conduits to provide communication along the length of the system, comprisingplacing into the existing conduit a uniform substantially crush-resistant spacer element and an impervious primary conta

[ What is claimed is:] [1.] A method of installation of a dual containment pipe system into an existing conduits to provide communication along the length of the system, comprisingplacing into the existing conduit a uniform substantially crush-resistant spacer element and an impervious primary containment pipe which is adapted to be installed in the existing conduit and which after insertion is configured to conform to the interior configuration of the existing conduit to form a new primary containment pipe,configuring the containment pipe and spacer element to the interior configuration of the existing conduit, andfixing the containment pipe to maintain its configuration pressurized against the spacer element to form a substantially uniform space between the containment pipe and the existing conduit and provide a uniform space and communication along the length of the system.