State of Technology Report for Force Main Rehabilitation, Final ...

Technology/Method Symmetrical Reduction PE Close Fit Liner
I. Technology Background
Status Emerging
Date of Introduction 2001 in US
Utilization Rates Total HDPE experience worldwide - over 8000 miles.
Vendor Name(s) InsituGuard TM Flexed HDPE
Insituform Technologies, Inc
17999 Edison Avenue
Chesterfield, MO 63005
Phone: 800-234-2992
Fax: 636-519-8744
Web: http://www.insituform.com/
Practitioner(s) Not available
Description of Main
Features
Inserted into a new or existing pipeline, the polyethylene liner is continuous, and
installed with a close-fit against the inner wall of the host pipe. The polyethylene
liner isolates the flow stream from the host pipe wall, eliminating internal
corrosion. InsituGuard stops leaks, and can provide a fully structural solution in
some cases.
Main Benefits Claimed • Rapid installation
• Drinking water approved
• Negotiates long radius (sweep) bends
• Utilizes high-performance PE 100 (4710)
• Minimizes disruption
Main Limitations Cited • Cannot do factory bends (20% diameter reduction to facilitate introduction)
Applicability
(Underline those that
apply)
• Bypass required
Force Main Gravity Sewer Laterals Manholes Appurtenances
Water Main Service Lines Other:__________________________
II. Technology Parameters
Service Application Rehabilitation
Service Connections Service Connections have to be excavated. Fused fittings used to reinstate.
Structural Rating Claimed Class 3 or 4 depending upon diameter, pressure and host pipe condition.
Materials of Composition 4710 (PE 100)
Diameter Range, inches 6 to 48 inches
Thickness Range, inches DR 17 or thinner
Pressure Capacity, psi Pressure rating to 150+ psi for Class 3. Class 4 dependent upon DR.
Temperature Range, o F 140 o F
Renewal Length, feet 2000+ feet depending on winching capacity.
Other Notes Pipes may be cleaned, as needed, with high-pressure water jet cleaners,
mechanically powered equipment, and winch cable attached devices or fluidpropelled
pig devices.
III. Technology Design, Installation, and QA/QC Information
Product Standards HDPE is certified as complying with ANSI NSF Standard 61.
Design Standards Class 4 design based on AWWA/PPI design standards.
Class 3 interactive design based on industry accepted design methodology.
Design Life Range 50 years
Installation Methodology 1. Excavations are required for installation and to remove any existing fittings.
2. The PE pipe selected for the project is welded into lengths suitable for
installation; this can be the entire length, or shorter segments to accommodate
available work space. If shorter segments are used, they will be fused together
prior to entering the roller reduction machine.
3. The welded pipe is pushed through the roller box, which alters the shape of the
pipe, resulting in a diameter reduction of up to 20% of the cross-sectional area.
4. The liner is inserted into the host pipe.
5. Once the liner is in place, it is cut to length, end fittings are attached and the
liner is pressurized to snap the bands.
6. Intermediate fittings are installed, service connections are excavated and
A-10