Dual containment pipe system and method of installation

Details Dual containment pipe system and method of installation Dual containment pipe system and method of installation

E - Fixed Constructions

03

F

E03F 5/02 (2006.01) E03F 3/06 (2006.01) F16L 11/20 (2006.01) F16L 55/165 (2006.01)

Patent

CA 2180968

A dual containment pipe system suitable for installation into an existing conduit includes a new secondary containment pipe with a plurality of substantially uniform internal studs and a new primary containment pipe up against the studs. An annular space is formed between the pipes by the studs which provides space along the length of the conduit for installation of leak detection systems including cables or perforated conduits for removing liquids or purging the annulus. The impervious new primary containment pipe may be cured in place, folded and formed, diameter reduced pipe, or any other pipe suitable for pipeline rehabilitation. A manhole system for connection of service laterals to the main line pipe which maintaining dual containment utilizing closure pieces for the main line coupled to a bellow fitting and service lateral riser tee is also disclosed.

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