State of Technology Report for Force Main Rehabilitation, Final ...
State of Technology Report for Force Main Rehabilitation, Final ...
State of Technology Report for Force Main Rehabilitation, Final ...
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3.4.5.1 Adhesive-Backed Woven Hose Lining<br />
Semi-Structural (Class II, III) Woven Hose Lining<br />
Starline ® HPL-S<br />
Karl Weiss Technologies, located in Berlin-Zehlendorf, Germany, has developed a complete line <strong>of</strong> CIPP<br />
products <strong>for</strong> the gas, water, and wastewater industries. For natural gas applications, Karl Weiss has been<br />
working with the Gas <strong>Technology</strong> Institute (GTI) to refine and test a new High Pressure Liner (HPL).<br />
The Starline HPL-G liner was first installed in 2004 in the US. Karl Weiss reports that Battelle carried<br />
out long-term tests demonstrating the suitability <strong>of</strong> the liner <strong>for</strong> gas pipes in the US. The hose liner, based<br />
on an epoxy resin system, has been tested in accordance with the German standard DVGW VP 404,<br />
which includes aging strength, fluid strength, sealing characteristics, peel strength, and creep strength<br />
against internal pressure. The German Association <strong>of</strong> Gas and Water (DVGW - Deutsche Vereinigung<br />
des Gas und Wassesfaches e.V.) has certified the liner <strong>for</strong> a maximum pressure <strong>of</strong> 430 psi (30 bar) with a<br />
50 year lifetime, according to Karl Weiss. By modifying the liner coating, the HPL liner is also available<br />
<strong>for</strong> drinking water transmission. Starline 1000 (see Figure 3-18) is the liner designated <strong>for</strong> drinking water<br />
applications in Germany. It is available in diameters <strong>of</strong> 3 to 24 inches (75 to 600 mm). Although the<br />
liner meets the German DVGW W270 Recommended Practice <strong>for</strong><br />
Drinking Water and the KTW recommendations <strong>of</strong> the Federal<br />
Institute <strong>of</strong> Health (Bundesgesundheitsamt), the application <strong>for</strong><br />
NSF 61 certification has only been initiated with approval<br />
expected in 2010. Starline 3000 UV is a liner that is designed to<br />
be fully self-supporting, not dependent on the adhesion <strong>of</strong> the liner<br />
to the host pipe. It is also UV-cured. Starline HPL-W and<br />
Starline HPL-S are Karl Weiss’s equivalent to the high pressure<br />
gas pipe, except these are designed <strong>for</strong> drinking water and<br />
wastewater applications and in particular where long installation<br />
Figure 3-18. Starline<br />
lengths are needed.<br />
® 1000<br />
Structural (Class IV) Woven Hose Lining<br />
Aqua-Pipe ®<br />
Sanexen Environmental Services <strong>of</strong> Quebec, Canada, in conjunction with the National Research Council<br />
(NRC) <strong>of</strong> Canada, developed the new structural hose liner Aqua-Pipe primarily <strong>for</strong> use in potable water<br />
applications (Figure 3-19). Aqua-Pipe have both the BNQ Standard 3660-950 certification (Canada) and<br />
NSF 61 certification <strong>for</strong> use in drinking water systems. The majority <strong>of</strong> early installations were in Eastern<br />
Canada, principally Quebec Province, with a later introduction to the US in 2004. To date, over 800,000<br />
feet (243,902 meters) <strong>of</strong> Aqua-Pipe has been installed in North America. Aqua-Pipe is composed <strong>of</strong> two<br />
concentric, tubular, plain-weave polyester jackets with the inner<br />
jacket bonded to a polyurethane elastomer. This watertight<br />
tubular elastomer membrane is compatible with drinking water.<br />
The polyester jackets are impregnated with epoxy resin on site<br />
in refrigerated trucks. The Louisiana Tech University TTC has<br />
been running tests on Aqua-Pipe <strong>for</strong> Sanexen. Based on this<br />
testing, the physical properties <strong>of</strong> the Aqua-Pipe liner are<br />
reported to be higher than the minimums in ASTM F1216<br />
and/or F1743. The flexural modulus is 290,000 psi (20,000<br />
bar). The flexural strength is 6,500 psi (448 bar) and the tensile<br />
strength is 8,700 psi (600 bar). The tensile strength in particular<br />
is nearly three times the ASTM minimums. The TTC has also<br />
carried out a combination <strong>of</strong> creep tests (to obtain creep<br />
Figure 3-19. Aqua-Pipe Construction<br />
36