AWWA ACE65428

With piping infrastructure from the 19th andearly 20th century reaching the end of it's life expectancy, utilities are now challengedwith the decision of how to reinvest in and renovate their systems for the future. Althoughcomplete replacement of the piping infrastructure using conventional dig solutions is anoption, this approach can be time consuming and very disruptive to traffic, citizens andthe environment. Today, many utilities are now realizing that these problems can easilybe avoided by the use of trenchless pressure pipe lining technologies.Several municipalities have utilized such technologies for rehabilitating smalldiameter distribution piping. Although these lining technologies are not new to the USAand have over 7,000 miles of experience worldwide, the process has previously beenused in moderation in water main rehabilitation due to the fact that excavations wererequired at each service connection. However, recent technology developments haveallowed for the robotic internal sealing and reinstatement of the service connections,thereby eliminating the unnecessary disruption and added costs of excavations.This paper provides specifics of two lining technologies that have beenutilized. The paper focuses on one specific robotic technology used forthe internal sealing and reinstatement of service connections. By way of a remoteoperator above ground, the unique process takes place inside the pipe; utilizingrobotics, eddy current sensor technology, and specially designed milling bits to install amechanical seal at each service connection. Includes 5 references.

Product Details

Edition:

Vol. - No.

Published:

06/01/2007

Number of Pages:

50

File Size:

1 file , 2 MB