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

Technology/Method Close Fit/Tension - Based, Symmetrical Reduction
I. Technology Background
Status Conventional
Date of Introduction Late 1980s
Utilization Rates Over 1,000 miles (1,600 km) of Swagelining have been installed to date.
Vendor Name(s) Swagelining
Suite 100
600 Bent Creek Boulevard
Mechanicsburg
PA 17050
USA
Phone: 717-724-1900
Fax: 717-724-1901
Web: http://www.swagelining.com
Email: info.us@advanticagroup.com
Practitioner(s) Licensees provided on website.
Description of Main
Features
• The Swagelining system uses polyethylene pipe, which has an outside
diameter slightly larger than the inside diameter of the pipe to be lined.
After sections of PE are fused together to form a continuous pipe, the PE
pipe is pulled through a reduction die, which temporarily reduces its
diameter.
• This allows the PE pipe to be pulled through the existing pipeline. After the
PE pipe has been pulled completely through the pipe, the pulling force is
removed and the PE pipe returns toward its original diameter until it presses
tightly against the inside wall of the host pipe.
• Swagelining is suitable for the rehabilitation of all types of pressure pipe.
Main Benefits Claimed • When the host pipe is structurally sound, the wall thickness of the liner may
be reduced.
• Since sections of PE pipe are butt fused together, there are no joints where
leaks could develop in the future.
• Compact, lightweight equipment requires very little setup time resulting in
less disruption, faster installation, and less expense.
• It is capable of installing the full range of PE pipe quickly and easily in cast
iron, ductile iron, steel, concrete and asbestos cement pipelines.
• There is no shrinkage or curing and no field chemistry or heating is required.
Polyethylene is flexible, leak tight, and highly resistant to chemical attack.
Main Limitations Cited • Tension must be maintained on the string of pipe until full insertion is
completed.
• Work site requires room for a long string of butt-fused pipe sections to be
Applicability
(Underline those that
apply)
strung out before diameter reduction
Force Main Water Main Forced Sewer Other: Gas, Water Injection Lines,
Mining Slurry and any other services using metallic pipe.
II. Technology Parameters
Service Application Rehabilitation and replacement
Service Connections Standard fittings are available to allow sections of PE-lined pipe to be easily and
securely reconnected to the rest of your water transmission or distribution system.
Wide variety of PE pipes and a full complement of tapping, branching, and
connection methods have been developed to provide a total renewal system.
Structural Rating Claimed This depends on the PE pipe rating as well as whether or not the PE is to be used
as a liner or a replacement for the existing pipe.
Materials of Composition Polyethylene
Diameter Range, inches 4-44 inches
Thickness Range, inches DR 11 to 42
Pressure Capacity, psi This depends on the PE pipe rating as well as whether or not the PE is to be used
as a liner or a replacement for the existing pipe.
Temperature Range, o F Pressure derating is required for temperatures above 80 o F up to 100 o F. The
manufacture to be consulted for temperatures above 100 o F.
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